{ "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-2026-100073", "tracking": { "current_release_date": "2026-10-21T11:38:43.037089Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-100073", "initial_release_date": "2026-09-25T14:30:57.701831Z", "revision_history": [ { "date": "2026-09-25T14:30:57.701831Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| References created (2)." }, { "date": "2026-09-25T14:31:00.638354Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-09-26T00:44:19.812040Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Products connected (1)." }, { "date": "2026-09-26T06:44:16.499171Z", "number": "4", "summary": "Description created for source." }, { "date": "2026-09-26T14:01:55.779416Z", "number": "5", "summary": "Source created.| CVE status created. (valid)| Description created for source.| References created (4)." }, { "date": "2026-09-26T15:13:01.251297Z", "number": "6", "summary": "EPSS created.| Unknown change." }, { "date": "2026-09-26T15:13:10.240405Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-09-28T10:10:28.140201Z", "number": "8", "summary": "Source connected.| CVE status created. (valid)| Products connected (1).| References created (17)." }, { "date": "2026-09-28T10:10:30.161008Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-09-28T13:10:53.460589Z", "number": "10", "summary": "Products created (11).| References created (2).| Description created for source.| Unknown change.| Product Identifiers created (3)." }, { "date": "2026-09-28T13:11:05.199947Z", "number": "11", "summary": "NCSC Score updated." }, { "date": "2026-09-29T16:13:34.292675Z", "number": "12", "summary": "EPSS created.| Unknown change." }, { "date": "2026-09-29T16:13:38.749014Z", "number": "13", "summary": "NCSC Score updated." }, { "date": "2026-09-30T12:03:44.339778Z", "number": "14", "summary": "Products connected (1).| References created (1)." }, { "date": "2026-09-30T12:03:45.662013Z", "number": "15", "summary": "NCSC Score updated." }, { "date": "2026-10-02T12:12:39.183340Z", "number": "16", "summary": "Products connected (1).| References created (1)." }, { "date": "2026-10-02T12:12:44.968466Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-10-05T11:29:43.375517Z", "number": "18", "summary": "References created (1)." }, { "date": "2026-10-05T11:29:45.259922Z", "number": "19", "summary": "NCSC Score updated." }, { "date": "2026-10-08T17:54:33.252868Z", "number": "20", "summary": "Products connected (1).| References created (1)." }, { "date": "2026-10-08T17:54:35.004525Z", "number": "21", "summary": "NCSC Score updated." }, { "date": "2026-10-14T15:45:16.913559Z", "number": "22", "summary": "Products connected (1).| References created (1)." }, { "date": "2026-10-14T15:45:18.890495Z", "number": "23", "summary": "NCSC Score updated." }, { "date": "2026-10-15T12:18:29.213012Z", "number": "24", "summary": "References created (6)." }, { "date": "2026-10-15T12:18:31.276639Z", "number": "25", "summary": "NCSC Score updated." }, { "date": "2026-10-16T10:20:46.477497Z", "number": "26", "summary": "References created (1)." }, { "date": "2026-10-16T10:21:02.247393Z", "number": "27", "summary": "NCSC Score updated." }, { "date": "2026-10-19T12:24:17.141704Z", "number": "28", "summary": "Products created (2).| Products removed (2).| Product Identifiers created (1).| Product Identifiers removed (1)." }, { "date": "2026-10-19T12:24:23.669339Z", "number": "29", "summary": "NCSC Score updated." }, { "date": "2026-10-19T12:45:31.691155Z", "number": "30", "summary": "References created (4)." }, { "date": "2026-10-19T12:45:34.220760Z", "number": "31", "summary": "NCSC Score updated." }, { "date": "2026-10-21T11:33:26.095181Z", "number": "32", "summary": "References created (8)." }, { "date": "2026-10-21T11:33:27.753897Z", "number": "33", "summary": "NCSC Score updated." } ], "status": "interim", "version": "33" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1295663", "product_identification_helper": { "cpe": "cpe:/o:debian:debian_linux:-" } } } ], "category": "product_name", "name": "Debian Linux" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/*", "product": { "name": "vers:deb/*", "product_id": "CSAFPID-2036022" } } ], "category": "product_name", "name": "linux" } ], "category": "product_family", "name": "bookworm" } ], "category": "vendor", "name": "Debian" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:git/2b6d39229bc783198222cddd31e2fbded93c8db7", "product": { "name": "vers:git/2b6d39229bc783198222cddd31e2fbded93c8db7", "product_id": "CSAFPID-9479888" } }, { "category": "product_version_range", "name": "vers:git/95ad8ee45cdbc321c135a2db895d48b374ef0f87|<46e8e31771f4f1c5e1cdec37a889a6730e42e9f1", "product": { "name": "vers:git/95ad8ee45cdbc321c135a2db895d48b374ef0f87|<46e8e31771f4f1c5e1cdec37a889a6730e42e9f1", "product_id": "CSAFPID-9479889" } }, { "category": "product_version_range", "name": "vers:git/95ad8ee45cdbc321c135a2db895d48b374ef0f87|=6.16.3", "product": { "name": "vers:unknown/>=6.16.3", "product_id": "CSAFPID-9479894", "product_identification_helper": { "cpe": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=6.17|<=7.2.6", "product": { "name": "vers:unknown/>=6.17|<=7.2.6", "product_id": "CSAFPID-9460042", "product_identification_helper": { "cpe": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=6.17|<=7.3", "product": { "name": "vers:unknown/>=6.17|<=7.3", "product_id": "CSAFPID-9727638", "product_identification_helper": { "cpe": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*" } } }, { "category": "product_version_range", "name": "vers:unknown/>=6.17|<=7.3-rc1", "product": { "name": "vers:unknown/>=6.17|<=7.3-rc1", "product_id": "CSAFPID-9457869" } } ], "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:linux:linux_kernel:unspecified" } } } ], "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:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1317176", "product_identification_helper": { "cpe": "cpe:/o:suse:opensuse:-" } } } ], "category": "product_name", "name": "SUSE openSUSE" }, { "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" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-100073", "notes": [ { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix transaction overflow during writeback\n\nCommit 95ad8ee45cdb (\"ext4: correct the reserved credits for extent\nconversion\") was correct to note that we need to reserve enough credits\nfor all extents possibly underlying a large folio. However it was too\neager to reduce the number of reserved credits. Extent conversion may\nnot only need to touch several leaf extent blocks, it may also need to\nsplit extents - for example a single large unwritten extent may need to\nbe split into many small written ones in case of sparse folio dirtying.\nThis can thus result not only in extent leaf modifications but also in a\nneed to allocate new extent tree nodes. As a result the reserved\ntransaction credits were not sufficient in some corner cases. Use\next4_meta_trans_blocks() for correct upper bound credit estimate.", "title": "cveprojectv5 - https://www.cve.org/CVERecord?id=CVE-2026-100073" }, { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix transaction overflow during writeback\n\nCommit 95ad8ee45cdb (\"ext4: correct the reserved credits for extent\nconversion\") was correct to note that we need to reserve enough credits\nfor all extents possibly underlying a large folio. However it was too\neager to reduce the number of reserved credits. Extent conversion may\nnot only need to touch several leaf extent blocks, it may also need to\nsplit extents - for example a single large unwritten extent may need to\nbe split into many small written ones in case of sparse folio dirtying.\nThis can thus result not only in extent leaf modifications but also in a\nneed to allocate new extent tree nodes. As a result the reserved\ntransaction credits were not sufficient in some corner cases. Use\next4_meta_trans_blocks() for correct upper bound credit estimate.", "title": "osvgit - https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-100073.json?alt=media" }, { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\next4: fix transaction overflow during writeback\n\nCommit 95ad8ee45cdb (\"ext4: correct the reserved credits for extent\nconversion\") was correct to note that we need to reserve enough credits\nfor all extents possibly underlying a large folio. However it was too\neager to reduce the number of reserved credits. Extent conversion may\nnot only need to touch several leaf extent blocks, it may also need to\nsplit extents - for example a single large unwritten extent may need to\nbe split into many small written ones in case of sparse folio dirtying.\nThis can thus result not only in extent leaf modifications but also in a\nneed to allocate new extent tree nodes. As a result the reserved\ntransaction credits were not sufficient in some corner cases. Use\next4_meta_trans_blocks() for correct upper bound credit estimate.", "title": "nvd - https://nvd.nist.gov/vuln/detail/CVE-2026-100073" }, { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved: ext4: fix transaction overflow during writeback Commit 95ad8ee45cdb (\"ext4: correct the reserved credits for extent conversion\") was correct to note that we need to reserve enough credits for all extents possibly underlying a large folio. However it was too eager to reduce the number of reserved credits. Extent conversion may not only need to touch several leaf extent blocks, it may also need to split extents - for example a single large unwritten extent may need to be split into many small written ones in case of sparse folio dirtying. This can thus result not only in extent leaf modifications but also in a need to allocate new extent tree nodes. As a result the reserved transaction credits were not sufficient in some corner cases. Use ext4_meta_trans_blocks() for correct upper bound credit estimate.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-100073" }, { "category": "other", "text": "0.00145", "title": "EPSS" }, { "category": "other", "text": "3.4", "title": "NCSC Score" }, { "category": "other", "text": "There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "The value of the most recent CVSS (V3) score, Is related to a product by vendor Open Source, Is related to (a version of) product Linux Kernel, Is related to a product by vendor Linux", "title": "NCSC Score top decreasing factors" } ], "product_status": { "known_affected": [ "CSAFPID-1330297", "CSAFPID-9479888", "CSAFPID-9479889", "CSAFPID-9479890", "CSAFPID-9479891", "CSAFPID-5042774", "CSAFPID-9479894", "CSAFPID-9460042", "CSAFPID-1295663", "CSAFPID-1317176", "CSAFPID-1317177", "CSAFPID-1317174", "CSAFPID-9727638" ], "known_not_affected": [ "CSAFPID-2036022", "CSAFPID-9328075", "CSAFPID-5042775", "CSAFPID-9727422" ] }, "references": [ { "category": "external", "summary": "Source - ncscclear", "url": "https://vulnerabilities.ncsc.nl/manual/CVE-2026-100073" }, { "category": "external", "summary": "Source - nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100073" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-100073" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss" }, { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3588.json" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://www.cve.org/CVERecord?id=CVE-2026-100073" }, { "category": "external", "summary": "Source - osv", "url": "https://www.googleapis.com/download/storage/v1/b/osv-vulnerabilities/o/GIT%2FCVE-2026-100073.json?alt=media" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029872.html" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://git.kernel.org/stable/c/46e8e31771f4f1c5e1cdec37a889a6730e42e9f1" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; osv", "url": "https://git.kernel.org/stable/c/a22464c5df5827e884a5a7d3d8fb03870e5bb6c8" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3588.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-3588" }, { "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/2026092554-CVE-2026-100070-55cc@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092556-CVE-2026-100071-1bd1@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092556-CVE-2026-100072-fdda@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092556-CVE-2026-100073-930c@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092557-CVE-2026-100074-34ff@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092557-CVE-2026-100075-f655@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092557-CVE-2026-100076-a55c@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092557-CVE-2026-100077-867d@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092557-CVE-2026-100078-7871@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092557-CVE-2026-100079-36cf@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092558-CVE-2026-98160-d5c6@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092558-CVE-2026-98161-e1d0@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092558-CVE-2026-98162-fc53@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lore.kernel.org/linux-cve-announce/2026092659-CVE-2026-98163-f458@gregkh/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://security-tracker.debian.org/tracker/DSA-6528-1" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/KE6VRWL7XOKXNWZ4CQBG6FAQT3GVY2PE/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.debian.org/debian-lts-announce/2026/10/msg00009.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://linux.oracle.com/errata/ELSA-2026-500374.html" }, { "category": "external", "summary": "Reference - osv", "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100073.json" }, { "category": "external", "summary": "Reference - osv", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100073" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029798.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029838.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029837.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029830.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029840.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://linux.oracle.com/errata/ELSA-2026-500385.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029841.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/JENMR6KB376CD5DU6MCAC43QULC2R3W4/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.debian.org/debian-lts-announce/2026/10/msg00035.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://linux.oracle.com/errata/ELSA-2026-500398.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029878.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029890.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029887.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://security-tracker.debian.org/tracker/DSA-6568-1" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029892.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029893.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029928.html" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/3IR3SSSJUU3WSIZW3VG4SJZ4UEWY4WAV/" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://lists.suse.com/pipermail/sle-security-updates/2026-October/029959.html" } ], "title": "CVE-2026-100073" } ] }