{"id":"CVE-2026-80963","title":"dm-stats: fix a crash if allocation of per-cpu data fails","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ndm-stats: fix a crash if allocation of per-cpu data fails\n\nIf \"dm_kvzalloc(percpu_alloc_size, cpu_to_node(cpu))\" fails, the code\njumps to the \"out\" label and calls dm_s…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cvssSource":"vendor","cwe":["CWE-476"],"vendor":"Linux","product":"Linux","affected":["Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < e45f0b0c41139810ff395ba2f3cfca1460a5b8a6","Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 9805d87d0e26c68ee69da3928e665214d2e2851a","Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 564d17573ef643c13cf6e9015124a205fa65e704","Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 389a50d094e13724f5f45e6d9d6ef734c98ba291","Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < c3f211b7a277dd404b4e7d23095be964b5b46a27","Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 74210fa072960a18bb0eead487585452af722e4f","Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 0c8f7870ed3ebd512f090d7714cc2c556b9e5c75","Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < cc87e26d9cce22061dc21e51e11afef29dbbc36a","Linux 3.12"],"published":"2026-09-11","updated":"2026-10-19","sourceUpdated":"2026-10-19T08:45:47.190Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-80963","references":[{"url":"https://git.kernel.org/stable/c/e45f0b0c41139810ff395ba2f3cfca1460a5b8a6"},{"url":"https://git.kernel.org/stable/c/9805d87d0e26c68ee69da3928e665214d2e2851a"},{"url":"https://git.kernel.org/stable/c/564d17573ef643c13cf6e9015124a205fa65e704"},{"url":"https://git.kernel.org/stable/c/389a50d094e13724f5f45e6d9d6ef734c98ba291"},{"url":"https://git.kernel.org/stable/c/c3f211b7a277dd404b4e7d23095be964b5b46a27"},{"url":"https://git.kernel.org/stable/c/74210fa072960a18bb0eead487585452af722e4f"},{"url":"https://git.kernel.org/stable/c/0c8f7870ed3ebd512f090d7714cc2c556b9e5c75"},{"url":"https://git.kernel.org/stable/c/cc87e26d9cce22061dc21e51e11afef29dbbc36a"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80963.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-80963"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2532397"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-80963"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80963"},{"url":"https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2026/CVE-2026-80963.mbox"}],"tags":["cve.org","csaf","vex","red-hat"],"epss":0.00177,"epssPercentile":0.07145,"ingestedAt":"2026-09-14T15:23:07.455Z","slug":"CVE-2026-80963","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ndm-stats: fix a crash if allocation of per-cpu data fails\n\nIf \"dm_kvzalloc(percpu_alloc_size, cpu_to_node(cpu))\" fails, the code\njumps to the \"out\" label and calls dm_stat_free. dm_stat_free does\n\"for_each_possible_cpu(cpu) { dm_kvfree(s->stat_percpu[cpu][0].histogram,\ns->histogram_alloc_size);\", which crashes with NULL pointer dereference\nif s->stat_percpu[cpu] is NULL.\n\nThis commit fixes the bug by testing s->stat_percpu[cpu] for NULL before\nusing it.\n\n## Affected\n\n- `Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < e45f0b0c41139810ff395ba2f3cfca1460a5b8a6`\n- `Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 9805d87d0e26c68ee69da3928e665214d2e2851a`\n- `Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 564d17573ef643c13cf6e9015124a205fa65e704`\n- `Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 389a50d094e13724f5f45e6d9d6ef734c98ba291`\n- `Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < c3f211b7a277dd404b4e7d23095be964b5b46a27`\n- `Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 74210fa072960a18bb0eead487585452af722e4f`\n- `Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < 0c8f7870ed3ebd512f090d7714cc2c556b9e5c75`\n- `Linux >= fd2ed4d252701d3bbed4cd3e3d267ad469bb832a < cc87e26d9cce22061dc21e51e11afef29dbbc36a`\n- `Linux 3.12`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80963.json)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":204219,"id":"CVE-2026-80963","ts":1789490240315,"field":"cvss","old":null,"new":"5.5"},{"seq":204218,"id":"CVE-2026-80963","ts":1789490240315,"field":"severity","old":"none","new":"medium"},{"seq":147277,"id":"CVE-2026-80963","ts":1789270206414,"field":"cvss","old":null,"new":"4.1"},{"seq":147276,"id":"CVE-2026-80963","ts":1789270206414,"field":"severity","old":"none","new":"medium"},{"seq":109038,"id":"CVE-2026-80963","ts":1789183730061,"field":"cvss","old":null,"new":"4.1"},{"seq":109037,"id":"CVE-2026-80963","ts":1789183730061,"field":"severity","old":"none","new":"medium"}]}