{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-23230", "tracking": { "current_release_date": "2026-04-02T15:51:42.541735Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-23230", "initial_release_date": "2026-02-18T15:38:58.009780Z", "revision_history": [ { "date": "2026-02-18T15:38:58.009780Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| Products created (4).| Products connected (4).| References created (4)." }, { "date": "2026-02-18T15:39:04.647140Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-02-18T16:27:50.821447Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (4)." }, { "date": "2026-02-18T16:27:56.192796Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-02-18T18:44:07.924589Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Products connected (2)." }, { "date": "2026-02-18T18:44:11.956738Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-02-19T00:27:46.104363Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (13).| Product Identifiers created (5).| References created (3).| Vendor_assessment created." }, { "date": "2026-02-19T00:27:52.864100Z", "number": "8", "summary": "NCSC Score updated." }, { "date": "2026-02-19T00:59:53.344723Z", "number": "9", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (6)." }, { "date": "2026-02-19T06:43:49.296997Z", "number": "10", "summary": "Description created for source." }, { "date": "2026-02-19T13:06:22.661043Z", "number": "11", "summary": "Source connected.| CVE status created. (valid)| Products connected (1).| References created (36)." }, { "date": "2026-02-19T13:06:24.650163Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-02-19T14:16:48.266503Z", "number": "13", "summary": "Source created.| CVE status created. (valid)| EPSS created." }, { "date": "2026-02-19T14:17:03.284607Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-02-19T17:03:35.703748Z", "number": "15", "summary": "Products created (1).| Products connected (1).| References created (1)." }, { "date": "2026-02-19T17:26:35.688978Z", "number": "16", "summary": "References created (1)." }, { "date": "2026-02-20T00:24:46.467795Z", "number": "17", "summary": "References created (1)." }, { "date": "2026-02-23T03:39:13.868926Z", "number": "18", "summary": "Products created (6).| Products connected (3).| Products removed (5).| References created (1)." }, { "date": "2026-02-23T03:39:17.200409Z", "number": "19", "summary": "NCSC Score updated." }, { "date": "2026-02-23T04:25:36.040336Z", "number": "20", "summary": "References created (1)." }, { "date": "2026-02-23T18:19:41.994054Z", "number": "21", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1)." }, { "date": "2026-02-23T18:19:44.435995Z", "number": "22", "summary": "NCSC Score updated." }, { "date": "2026-02-23T18:43:45.787607Z", "number": "23", "summary": "Products connected (1).| Products removed (1)." }, { "date": "2026-02-24T00:51:38.563444Z", "number": "24", "summary": "References created (1)." }, { "date": "2026-03-13T00:43:43.163116Z", "number": "25", "summary": "Products connected (1).| Product Identifiers created (1).| Products removed (1)." }, { "date": "2026-03-13T00:43:44.973337Z", "number": "26", "summary": "NCSC Score updated." }, { "date": "2026-03-13T08:23:42.152280Z", "number": "27", "summary": "Products connected (1).| References created (2)." }, { "date": "2026-03-13T08:23:44.111143Z", "number": "28", "summary": "NCSC Score updated." }, { "date": "2026-03-13T18:43:47.358806Z", "number": "29", "summary": "Products connected (1).| Product Identifiers created (1)." }, { "date": "2026-03-16T03:41:42.251859Z", "number": "30", "summary": "Source connected.| CVE status created. (valid)" }, { "date": "2026-03-16T10:37:36.125166Z", "number": "31", "summary": "References created (2)." }, { "date": "2026-03-17T21:26:50.937629Z", "number": "32", "summary": "CVSS created.| Products created (4).| Product Identifiers created (5).| Products connected (1)." }, { "date": "2026-03-17T21:26:53.294206Z", "number": "33", "summary": "NCSC Score updated." }, { "date": "2026-03-19T09:08:21.239074Z", "number": "34", "summary": "Products connected (1).| References created (2)." }, { "date": "2026-03-19T09:08:23.686874Z", "number": "35", "summary": "NCSC Score updated." }, { "date": "2026-03-20T09:55:47.039361Z", "number": "36", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-20T09:55:49.988162Z", "number": "37", "summary": "NCSC Score updated." }, { "date": "2026-03-20T20:36:02.119826Z", "number": "38", "summary": "Products connected (1).| References created (4)." }, { "date": "2026-03-20T20:36:05.442782Z", "number": "39", "summary": "NCSC Score updated." }, { "date": "2026-03-25T01:06:18.586475Z", "number": "40", "summary": "References created (1)." }, { "date": "2026-03-25T01:06:22.483820Z", "number": "41", "summary": "NCSC Score updated." }, { "date": "2026-03-25T10:17:44.687995Z", "number": "42", "summary": "Products connected (1).| References created (4)." }, { "date": "2026-03-25T10:17:47.512355Z", "number": "43", "summary": "NCSC Score updated." }, { "date": "2026-03-26T11:44:12.035283Z", "number": "44", "summary": "References created (1)." }, { "date": "2026-03-26T11:44:14.367564Z", "number": "45", "summary": "NCSC Score updated." }, { "date": "2026-03-27T11:56:25.849036Z", "number": "46", "summary": "References created (2)." }, { "date": "2026-03-27T11:56:28.808104Z", "number": "47", "summary": "NCSC Score updated." }, { "date": "2026-03-30T11:11:47.526101Z", "number": "48", "summary": "References created (4)." }, { "date": "2026-03-30T11:11:50.068594Z", "number": "49", "summary": "NCSC Score updated." }, { "date": "2026-03-31T11:08:46.330533Z", "number": "50", "summary": "References created (1)." }, { "date": "2026-03-31T11:08:48.611285Z", "number": "51", "summary": "NCSC Score updated." }, { "date": "2026-04-02T12:13:30.782995Z", "number": "52", "summary": "References created (1)." }, { "date": "2026-04-02T15:25:33.519347Z", "number": "53", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (5).| Product Identifiers created (5).| References created (6)." }, { "date": "2026-04-02T15:25:36.614536Z", "number": "54", "summary": "NCSC Score updated." }, { "date": "2026-04-02T15:41:29.975548Z", "number": "55", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (14).| References created (6)." } ], "status": "interim", "version": "55" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1330296", "product_identification_helper": { "cpe": "cpe:/o:amazon:linux_2:-" } } } ], "category": "product_name", "name": "Amazon Linux 2" } ], "category": "vendor", "name": "Amazon" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1295663", "product_identification_helper": { "cpe": "cpe:2.3:o:debian:debian_linux:12.0:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "Debian Linux" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/6.1.164-1", "product": { "name": "vers:deb/6.1.164-1", "product_id": "CSAFPID-5812295", "product_identification_helper": { "purl": "pkg:deb/debian/linux@6.1.164-1?distro=bookworm" } } } ], "category": "product_name", "name": "linux" } ], "category": "product_family", "name": "bookworm" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/*", "product": { "name": "vers:deb/*", "product_id": "CSAFPID-2036023" } } ], "category": "product_name", "name": "linux" }, { "branches": [ { "category": "product_version_range", "name": "vers:deb/6.1.164-1~deb11u1", "product": { "name": "vers:deb/6.1.164-1~deb11u1", "product_id": "CSAFPID-5815375", "product_identification_helper": { "purl": "pkg:deb/debian/linux-6.1@6.1.164-1~deb11u1?distro=bullseye" } } } ], "category": "product_name", "name": "linux-6.1" } ], "category": "product_family", "name": "bullseye" } ], "category": "vendor", "name": "Debian" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:git/ebe98f1447bbccf8228335c62d86af02a0ed23f7|<3eaa22d688311c708b73f3c68bc6d0c8e3f0f77a", "product": { "name": "vers:git/ebe98f1447bbccf8228335c62d86af02a0ed23f7|<3eaa22d688311c708b73f3c68bc6d0c8e3f0f77a", "product_id": "CSAFPID-5669189" } }, { "category": "product_version_range", "name": "vers:git/ebe98f1447bbccf8228335c62d86af02a0ed23f7|<4386f6af8aaedd0c5ad6f659b40cadcc8f423828", "product": { "name": "vers:git/ebe98f1447bbccf8228335c62d86af02a0ed23f7|<4386f6af8aaedd0c5ad6f659b40cadcc8f423828", "product_id": "CSAFPID-5669188" } }, { "category": "product_version_range", "name": "vers:git/ebe98f1447bbccf8228335c62d86af02a0ed23f7|<4cfa4c37dcbcfd70866e856200ed8a2894cac578", "product": { "name": "vers:git/ebe98f1447bbccf8228335c62d86af02a0ed23f7|<4cfa4c37dcbcfd70866e856200ed8a2894cac578", "product_id": "CSAFPID-5669191" } }, { "category": "product_version_range", "name": "vers:git/ebe98f1447bbccf8228335c62d86af02a0ed23f7|<569fecc56bfe4df66f05734d67daef887746656b", "product": { "name": "vers:git/ebe98f1447bbccf8228335c62d86af02a0ed23f7|<569fecc56bfe4df66f05734d67daef887746656b", "product_id": "CSAFPID-5669187" } }, { "category": "product_version_range", "name": "vers:git/ebe98f1447bbccf8228335c62d86af02a0ed23f7|=6.13|<6.18.11", "product": { "name": "vers:unknown/>=6.13|<6.18.11", "product_id": "CSAFPID-5839350", "product_identification_helper": { "cpe": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=6.19|<6.19.1", "product": { "name": "vers:unknown/>=6.19|<6.19.1", "product_id": "CSAFPID-5754847", "product_identification_helper": { "cpe": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=6.1|<6.1.164", "product": { "name": "vers:unknown/>=6.1|<6.1.164", "product_id": "CSAFPID-5839347", "product_identification_helper": { "cpe": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=6.2|<6.6.125", "product": { "name": "vers:unknown/>=6.2|<6.6.125", "product_id": "CSAFPID-5839348", "product_identification_helper": { "cpe": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=6.7|<6.12.72", "product": { "name": "vers:unknown/>=6.7|<6.12.72", "product_id": "CSAFPID-5839349", "product_identification_helper": { "cpe": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "linux_kernel" } ], "category": "vendor", "name": "Linux" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1330297", "product_identification_helper": { "cpe": "cpe:/o:open_source:linux:-" } } } ], "category": "product_name", "name": "Open Source Linux Kernel" } ], "category": "vendor", "name": "Open Source" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1317177", "product_identification_helper": { "cpe": "cpe:/o:oracle:linux:-" } } } ], "category": "product_name", "name": "Oracle Linux" } ], "category": "vendor", "name": "Oracle" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/10", "product": { "name": "vers:rpm/10", "product_id": "CSAFPID-2858634", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:10" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 10" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/6", "product": { "name": "vers:rpm/6", "product_id": "CSAFPID-1439321", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:6" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 6" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/7", "product": { "name": "vers:rpm/7", "product_id": "CSAFPID-1439315", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:7" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 7" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/8", "product": { "name": "vers:rpm/8", "product_id": "CSAFPID-1439317", "product_identification_helper": { "cpe": "cpe:/a:redhat:enterprise_linux:8" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 8" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/9", "product": { "name": "vers:rpm/9", "product_id": "CSAFPID-1439319", "product_identification_helper": { "cpe": "cpe:/a:redhat:enterprise_linux:9" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 9" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2858635" } } ], "category": "product_name", "name": "kernel" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 10" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1453376" } } ], "category": "product_name", "name": "kernel" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 6" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1453377" } } ], "category": "product_name", "name": "kernel" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1453378" } } ], "category": "product_name", "name": "kernel-rt" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 7" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1453379" } } ], "category": "product_name", "name": "kernel" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1453380" } } ], "category": "product_name", "name": "kernel-rt" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 8" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1453381" } } ], "category": "product_name", "name": "kernel" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-1453382" } } ], "category": "product_name", "name": "kernel-rt" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 9" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1317174", "product_identification_helper": { "cpe": "cpe:/o:suse:suse_linux:-" } } } ], "category": "product_name", "name": "SuSE Linux" } ], "category": "vendor", "name": "SUSE" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5674307", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:azl3_kernel_6.6.121.1-1:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "azl3 kernel 6.6.121.1-1 on Azure Linux 3.0" } ], "category": "product_family", "name": "Open Source Software" } ], "category": "vendor", "name": "Microsoft" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-23230", "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: split cached_fid bitfields to avoid shared-byte RMW races\n\nis_open, has_lease and on_list are stored in the same bitfield byte in\nstruct cached_fid but are updated in different code paths that may run\nconcurrently. Bitfield assignments generate byte read–modify–write\noperations (e.g. `orb $mask, addr` on x86_64), so updating one flag can\nrestore stale values of the others.\n\nA possible interleaving is:\n CPU1: load old byte (has_lease=1, on_list=1)\n CPU2: clear both flags (store 0)\n CPU1: RMW store (old | IS_OPEN) -> reintroduces cleared bits\n\nTo avoid this class of races, convert these flags to separate bool\nfields.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-23230" }, { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: split cached_fid bitfields to avoid shared-byte RMW races\n\nis_open, has_lease and on_list are stored in the same bitfield byte in\nstruct cached_fid but are updated in different code paths that may run\nconcurrently. Bitfield assignments generate byte read–modify–write\noperations (e.g. `orb $mask, addr` on x86_64), so updating one flag can\nrestore stale values of the others.\n\nA possible interleaving is:\n CPU1: load old byte (has_lease=1, on_list=1)\n CPU2: clear both flags (store 0)\n CPU1: RMW store (old | IS_OPEN) -> reintroduces cleared bits\n\nTo avoid this class of races, convert these flags to separate bool\nfields.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-23230" }, { "category": "description", "text": "No description is available for this CVE.", "title": "redhat - https://access.redhat.com/security/cve/CVE-2026-23230" }, { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: split cached_fid bitfields to avoid shared-byte RMW races\n\nis_open, has_lease and on_list are stored in the same bitfield byte in\nstruct cached_fid but are updated in different code paths that may run\nconcurrently. Bitfield assignments generate byte read–modify–write\noperations (e.g. `orb $mask, addr` on x86_64), so updating one flag can\nrestore stale values of the others.\n\nA possible interleaving is:\n CPU1: load old byte (has_lease=1, on_list=1)\n CPU2: clear both flags (store 0)\n CPU1: RMW store (old | IS_OPEN) -> reintroduces cleared bits\n\nTo avoid this class of races, convert these flags to separate bool\nfields.", "title": "osv - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-23230.json?alt=media" }, { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved: smb: client: split cached_fid bitfields to avoid shared-byte RMW races is_open, has_lease and on_list are stored in the same bitfield byte in struct cached_fid but are updated in different code paths that may run concurrently. Bitfield assignments generate byte read–modify–write operations (e.g. `orb $mask, addr` on x86_64), so updating one flag can restore stale values of the others. A possible interleaving is: CPU1: load old byte (has_lease=1, on_list=1) CPU2: clear both flags (store 0) CPU1: RMW store (old | IS_OPEN) -> reintroduces cleared bits To avoid this class of races, convert these flags to separate bool fields.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-23230" }, { "category": "description", "text": "smb: client: split cached\\_fid bitfields to avoid shared-byte RMW races", "title": "microsoft - https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Feb" }, { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: split cached_fid bitfields to avoid shared-byte RMW races\n\nis_open, has_lease and on_list are stored in the same bitfield byte in\nstruct cached_fid but are updated in different code paths that may run\nconcurrently. Bitfield assignments generate byte read–modify–write\noperations (e.g. `orb $mask, addr` on x86_64), so updating one flag can\nrestore stale values of the others.\n\nA possible interleaving is:\n CPU1: load old byte (has_lease=1, on_list=1)\n CPU2: clear both flags (store 0)\n CPU1: RMW store (old | IS_OPEN) -> reintroduces cleared bits\n\nTo avoid this class of races, convert these flags to separate bool\nfields.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-23230" }, { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: split cached_fid bitfields to avoid shared-byte RMW races\n\nis_open, has_lease and on_list are stored in the same bitfield byte in\nstruct cached_fid but are updated in different code paths that may run\nconcurrently. Bitfield assignments generate byte read–modify–write\noperations (e.g. `orb $mask, addr` on x86_64), so updating one flag can\nrestore stale values of the others.\n\nA possible interleaving is:\n CPU1: load old byte (has_lease=1, on_list=1)\n CPU2: clear both flags (store 0)\n CPU1: RMW store (old | IS_OPEN) -> reintroduces cleared bits\n\nTo avoid this class of races, convert these flags to separate bool\nfields.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23230.json" }, { "category": "other", "text": "0.00013", "title": "EPSS" }, { "category": "other", "text": "3.5", "title": "NCSC Score" }, { "category": "other", "text": "Is related to a product by vendor Linux, Is related to (a version of) product Linux Kernel, Is related to a product by vendor Open Source", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 2\n", "title": "Vendor assessment" } ], "product_status": { "first_fixed": [ "CSAFPID-5812295", "CSAFPID-5815375" ], "known_affected": [ "CSAFPID-1439319", "CSAFPID-1453381", "CSAFPID-1453382", "CSAFPID-2858634", "CSAFPID-2858635", "CSAFPID-1330297", "CSAFPID-1289612", "CSAFPID-5669187", "CSAFPID-5669188", "CSAFPID-5669189", "CSAFPID-5669190", "CSAFPID-5669191", "CSAFPID-5669192", "CSAFPID-5674307", "CSAFPID-1295663", "CSAFPID-5754847", "CSAFPID-5839347", "CSAFPID-5839348", "CSAFPID-5839349", "CSAFPID-5839350", "CSAFPID-1317174", "CSAFPID-1330296", "CSAFPID-1317177" ], "known_not_affected": [ "CSAFPID-5618218", "CSAFPID-5618223", "CSAFPID-5629416", "CSAFPID-5629417", "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439321", "CSAFPID-1453376", "CSAFPID-1453377", "CSAFPID-1453378", "CSAFPID-1453379", "CSAFPID-1453380", "CSAFPID-5635288", "CSAFPID-1289613", "CSAFPID-5669083", "CSAFPID-2036023" ] }, "references": [ { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-23230" }, { "category": "external", "summary": "Source raw - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23230.json" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23230" }, { "category": "external", "summary": "Source raw - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-23230" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-23230" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/security/cve/CVE-2026-23230" }, { "category": "external", "summary": "Source raw - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23230.json" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-23230.json?alt=media" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0462.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-23230" }, { "category": "external", "summary": "Source raw - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - microsoft", "url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Feb" }, { "category": "external", "summary": "Source - hkcert", "url": "https://www.hkcert.org/security-bulletin/debian-linux-kernel-multiple-vulnerabilities_20260316" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-23230" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23230.json" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://git.kernel.org/stable/c/4386f6af8aaedd0c5ad6f659b40cadcc8f423828" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://git.kernel.org/stable/c/3eaa22d688311c708b73f3c68bc6d0c8e3f0f77a" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://git.kernel.org/stable/c/c4b9edd55987384a1f201d3d07ff71e448d79c1b" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://git.kernel.org/stable/c/4cfa4c37dcbcfd70866e856200ed8a2894cac578" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-23230" }, { "category": "external", "summary": "Reference - osv; redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23230" }, { "category": "external", "summary": "Reference - redhat", "url": "https://lore.kernel.org/linux-cve-announce/2026021808-CVE-2026-23230-8d0e@gregkh/T" }, { "category": "external", "summary": "Reference - osv", "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23230.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0462.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0462" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021859-CVE-2025-71225-44de@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021859-CVE-2025-71226-5662@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021859-CVE-2025-71227-949c@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021859-CVE-2025-71228-d43d@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021802-CVE-2025-71229-81bd@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021804-CVE-2025-71230-8e25@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021805-CVE-2025-71231-5cc3@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021805-CVE-2025-71232-8ee0@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021805-CVE-2025-71233-0c35@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021805-CVE-2025-71234-3bb7@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021805-CVE-2025-71235-b233@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021806-CVE-2025-71236-26df@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021806-CVE-2025-71237-545a@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021830-CVE-2026-23211-10d0@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021832-CVE-2026-23212-adae@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021800-CVE-2026-23213-c699@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021800-CVE-2026-23214-c822@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021800-CVE-2026-23215-3294@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021800-CVE-2026-23216-6c63@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021800-CVE-2026-23217-f399@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021801-CVE-2026-23218-4114@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021801-CVE-2026-23219-3569@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021806-CVE-2026-23220-efda@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021806-CVE-2026-23221-43ae@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021806-CVE-2026-23222-3958@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021806-CVE-2026-23223-e3d3@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021807-CVE-2026-23224-b534@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021807-CVE-2026-23225-2a27@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021807-CVE-2026-23226-438c@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021807-CVE-2026-23227-6986@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021807-CVE-2026-23228-647c@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021808-CVE-2026-23229-9dfe@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026021808-CVE-2026-23230-8d0e@gregkh/" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://git.kernel.org/stable/c/569fecc56bfe4df66f05734d67daef887746656b" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://git.kernel.org/stable/c/ec306600d5ba7148c9dbf8f5a8f1f5c1a044a241" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.debian.org/debian-security-announce/2026/msg00071.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.debian.org/debian-security-announce/2026/msg00072.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.debian.org/debian-lts-announce/2026/03/msg00003.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.debian.org/debian-lts-announce/2026/03/msg00002.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024746.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024715.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024771.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://alas.aws.amazon.com/AL2/ALAS2KERNEL-5.15-2026-099.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://alas.aws.amazon.com/AL2/ALAS2KERNEL-5.10-2026-114.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024766.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024803.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://linux.oracle.com/errata/ELSA-2026-50160.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024862.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024871.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024895.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024928.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024954.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024953.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024999.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024968.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024969.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/024994.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-March/025054.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-April/025086.html" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-1289612", "CSAFPID-1295663", "CSAFPID-1317174", "CSAFPID-1317177", "CSAFPID-1330296", "CSAFPID-1330297", "CSAFPID-1439319", "CSAFPID-1453381", "CSAFPID-1453382", "CSAFPID-2858634", "CSAFPID-2858635", "CSAFPID-5669187", "CSAFPID-5669188", "CSAFPID-5669189", "CSAFPID-5669190", "CSAFPID-5669191", "CSAFPID-5669192", "CSAFPID-5674307", "CSAFPID-5754847", "CSAFPID-5839347", "CSAFPID-5839348", "CSAFPID-5839349", "CSAFPID-5839350" ] } ], "title": "CVE-2026-23230" } ] }