{ "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-2026-23412", "tracking": { "current_release_date": "2026-04-03T07:17:23.003819Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-23412", "initial_release_date": "2026-04-02T12:27:18.200008Z", "revision_history": [ { "date": "2026-04-02T12:27:18.200008Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| References created (5)." }, { "date": "2026-04-02T12:27:25.701908Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-04-02T12:38:51.646108Z", "number": "3", "summary": "Source created.| CVE status created. (valid)| Description created for source.| Products created (5).| Products connected (7).| References created (5)." }, { "date": "2026-04-02T12:38:59.958153Z", "number": "4", "summary": "NCSC Score updated." }, { "date": "2026-04-02T15:22:27.619022Z", "number": "5", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-04-02T15:22:36.693249Z", "number": "6", "summary": "NCSC Score updated." }, { "date": "2026-04-02T18:44:41.191697Z", "number": "7", "summary": "Source created.| CVE status created. (valid)| Products connected (2)." }, { "date": "2026-04-03T00:27:45.653302Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (13).| Product Identifiers created (5).| References created (3).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-04-03T00:27:48.457305Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-04-03T06:43:54.780702Z", "number": "10", "summary": "Description created for source." } ], "status": "interim", "version": "10" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:git/84601d6ee68ae820dec97450934797046d62db4b|<24f90fa3994b992d1a09003a3db2599330a5232a", "product": { "name": "vers:git/84601d6ee68ae820dec97450934797046d62db4b|<24f90fa3994b992d1a09003a3db2599330a5232a", "product_id": "CSAFPID-5984729" } }, { "category": "product_version_range", "name": "vers:git/84601d6ee68ae820dec97450934797046d62db4b|<54244d54a971c26a0cd0a9073460ff71f3c51b32", "product": { "name": "vers:git/84601d6ee68ae820dec97450934797046d62db4b|<54244d54a971c26a0cd0a9073460ff71f3c51b32", "product_id": "CSAFPID-5984728" } }, { "category": "product_version_range", "name": "vers:git/84601d6ee68ae820dec97450934797046d62db4b|\n nfnl_hook_dump_one.isra.0+0xe71/0x10f0\n netlink_dump+0x554/0x12b0\n nfnl_hook_get+0x176/0x230\n [..]\n\nDefer release until after concurrent readers have completed.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-23412" }, { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: bpf: defer hook memory release until rcu readers are done\n\nYiming Qian reports UaF when concurrent process is dumping hooks via\nnfnetlink_hooks:\n\nBUG: KASAN: slab-use-after-free in nfnl_hook_dump_one.isra.0+0xe71/0x10f0\nRead of size 8 at addr ffff888003edbf88 by task poc/79\nCall Trace:\n \n nfnl_hook_dump_one.isra.0+0xe71/0x10f0\n netlink_dump+0x554/0x12b0\n nfnl_hook_get+0x176/0x230\n [..]\n\nDefer release until after concurrent readers have completed.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23412.json" }, { "category": "description", "text": "A flaw was found in the Linux kernel's netfilter BPF (Berkeley Packet Filter) component. A local attacker could exploit this by initiating a concurrent process to dump hooks via `nfnetlink_hooks`, which triggers a use-after-free vulnerability. This could lead to system instability or a denial of service (DoS) condition.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23412.json" }, { "category": "description", "text": "In the Linux kernel, the following vulnerability has been resolved: netfilter: bpf: defer hook memory release until rcu readers are done Yiming Qian reports UaF when concurrent process is dumping hooks via nfnetlink_hooks: BUG: KASAN: slab-use-after-free in nfnl_hook_dump_one.isra.0+0xe71/0x10f0 Read of size 8 at addr ffff888003edbf88 by task poc/79 Call Trace: nfnl_hook_dump_one.isra.0+0xe71/0x10f0 netlink_dump+0x554/0x12b0 nfnl_hook_get+0x176/0x230 [..] Defer release until after concurrent readers have completed.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-23412" }, { "category": "other", "text": "0.00018", "title": "EPSS" }, { "category": "other", "text": "4.4", "title": "NCSC Score" }, { "category": "other", "text": "Is related to an uncommon cwe id", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to a product by vendor Linux", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 2\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-1287531", "CSAFPID-5984725", "CSAFPID-5984726", "CSAFPID-5984727", "CSAFPID-5984728", "CSAFPID-5984729", "CSAFPID-1439319", "CSAFPID-1453381", "CSAFPID-1453382", "CSAFPID-2858634", "CSAFPID-2858635" ], "known_not_affected": [ "CSAFPID-1287532", "CSAFPID-5904647", "CSAFPID-5904671", "CSAFPID-5905005", "CSAFPID-5905006", "CSAFPID-5905027", "CSAFPID-2036022", "CSAFPID-2036023", "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439321", "CSAFPID-1453376", "CSAFPID-1453377", "CSAFPID-1453378", "CSAFPID-1453379", "CSAFPID-1453380" ] }, "references": [ { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-23412" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/23xxx/CVE-2026-23412.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-23412" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-23412.json" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://git.kernel.org/stable/c/24f90fa3994b992d1a09003a3db2599330a5232a" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://git.kernel.org/stable/c/54244d54a971c26a0cd0a9073460ff71f3c51b32" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://git.kernel.org/stable/c/c25e0dec366ae99b7264324ce3c7cbaea34691f9" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://git.kernel.org/stable/c/cb2bf5efdb02a2a59faf603604a1066e8266f349" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd", "url": "https://git.kernel.org/stable/c/d016c216bc75c45128160593a77b864a04dbe7c0" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-23412" }, { "category": "external", "summary": "Reference - redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23412" }, { "category": "external", "summary": "Reference - redhat", "url": "https://lore.kernel.org/linux-cve-announce/2026040201-CVE-2026-23412-4daa@gregkh/T" } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 5.5, "baseSeverity": "MEDIUM" }, "products": [ "CSAFPID-1287531", "CSAFPID-1439319", "CSAFPID-1453381", "CSAFPID-1453382", "CSAFPID-2858634", "CSAFPID-2858635", "CSAFPID-5984725", "CSAFPID-5984726", "CSAFPID-5984727", "CSAFPID-5984728", "CSAFPID-5984729" ] } ], "title": "CVE-2026-23412" } ] }