{"id":"CVE-2024-26883","revision":null,"records":[{"revision":"74a96516d81445bcac66c35058604133","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2024-26883","aliases":[],"title":"bpf: Fix stackmap overflow check on 32-bit arches","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix stackmap overflow check on 32-bit arches\n\nThe stackmap code relies on roundup_pow_of_two() to compute the number\nof hash buckets, and contains an overflow check by checking if the\nresulting value is 0. However, on 32-bit arches, the roundup code itself\ncan overflow by doing a 32-bit left-shift of an unsigned long value,\nwhich is undefined behaviour, so it is not guaranteed to truncate\nneatly. This was triggered by syzbot on the DEVMAP_HASH type, which\ncontains the same check, copied from the hashtab code.\n\nThe commit in the fixes tag actually attempted to fix this, but the fix\ndid not account for the UB, so the fix only works on CPUs where an\noverflow does result in a neat truncation to zero, which is not\nguaranteed. Checking the value before rounding does not have this\nproblem.","state":0,"publishedAt":"2024-04-17T10:27:39.036+00:00","modifiedAt":"2026-10-15T00:39:05.259+00:00","affected":[{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"unaffected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"kernel/bpf/stackmap.c\"\n ],\n \"versions\": [\n {\n \"version\": \"063c722dd9d285d877e6fd499e753d6224f4c046\",\n \"lessThan\": \"d0e214acc59145ce25113f617311aa79dda39cb3\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"7e3a6b820535eb395784060ae26c5af579528fa0\",\n \"lessThan\": \"21e5fa4688e1a4d3db6b72216231b24232f75c1d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"8032bf2af9ce26b3a362b9711d15f626ab946a74\",\n \"lessThan\": \"15641007df0f0d35fa28742b25c2a7db9dcd6895\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6183f4d3a0a2ad230511987c6c362ca43ec0055f\",\n \"lessThan\": \"ca1f06e72dec41ae4f76e7b1a8a97265447b46ae\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6183f4d3a0a2ad230511987c6c362ca43ec0055f\",\n \"lessThan\": \"f06899582ccee09bd85d0696290e3eaca9aa042d\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6183f4d3a0a2ad230511987c6c362ca43ec0055f\",\n \"lessThan\": \"7070b274c7866a4c5036f8d54fcaf315c64ac33a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6183f4d3a0a2ad230511987c6c362ca43ec0055f\",\n \"lessThan\": \"43f798b9036491fb014b55dd61c4c5c3193267d0\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6183f4d3a0a2ad230511987c6c362ca43ec0055f\",\n \"lessThan\": \"0971126c8164abe2004b8536b49690a0d6005b0a\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"6183f4d3a0a2ad230511987c6c362ca43ec0055f\",\n \"lessThan\": \"7a4b21250bf79eef26543d35bd390448646c536b\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"253150830a012adfccf90afcebae8fda5b05a80f\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"766107351731ae223ebf60ca22bdfeb47ce6acc8\",\n \"status\": \"affected\",\n \"versionType\": \"git\"\n },\n {\n \"version\": \"4.19.177\",\n \"lessThan\": \"4.19.311\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.99\",\n \"lessThan\": \"5.4.273\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.17\",\n \"lessThan\": \"5.10.214\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.9.258\",\n \"lessThan\": \"4.10\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.14.222\",\n \"lessThan\": \"4.15\",\n \"status\": \"affected\",\n \"versionType\": \"semver\"\n }\n ]\n }"},{"ecosystem":"Vendor product","name":"Linux","ranges":[],"versions":[],"rawVersionEvidence":"{\n \"product\": \"Linux\",\n \"vendor\": \"Linux\",\n \"defaultStatus\": \"affected\",\n \"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\n \"programFiles\": [\n \"kernel/bpf/stackmap.c\"\n ],\n \"versions\": [\n {\n \"version\": \"5.11\",\n \"status\": \"affected\"\n },\n {\n \"version\": \"0\",\n \"lessThan\": \"5.11\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"4.19.311\",\n \"lessThanOrEqual\": \"4.19.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.4.273\",\n \"lessThanOrEqual\": \"5.4.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.10.214\",\n \"lessThanOrEqual\": \"5.10.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"5.15.153\",\n \"lessThanOrEqual\": \"5.15.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.1.83\",\n \"lessThanOrEqual\": \"6.1.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.6.23\",\n \"lessThanOrEqual\": \"6.6.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.7.11\",\n \"lessThanOrEqual\": \"6.7.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.8.2\",\n \"lessThanOrEqual\": \"6.8.*\",\n \"status\": \"unaffected\",\n \"versionType\": \"semver\"\n },\n {\n \"version\": \"6.9\",\n \"lessThanOrEqual\": \"*\",\n \"status\": \"unaffected\",\n \"versionType\": \"original_commit_for_fix\"\n }\n ]\n }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8,"severity":"HIGH"}],"references":["https://git.kernel.org/stable/c/d0e214acc59145ce25113f617311aa79dda39cb3","https://git.kernel.org/stable/c/21e5fa4688e1a4d3db6b72216231b24232f75c1d","https://git.kernel.org/stable/c/15641007df0f0d35fa28742b25c2a7db9dcd6895","https://git.kernel.org/stable/c/ca1f06e72dec41ae4f76e7b1a8a97265447b46ae","https://git.kernel.org/stable/c/f06899582ccee09bd85d0696290e3eaca9aa042d","https://git.kernel.org/stable/c/7070b274c7866a4c5036f8d54fcaf315c64ac33a","https://git.kernel.org/stable/c/43f798b9036491fb014b55dd61c4c5c3193267d0","https://git.kernel.org/stable/c/0971126c8164abe2004b8536b49690a0d6005b0a","https://git.kernel.org/stable/c/7a4b21250bf79eef26543d35bd390448646c536b"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-26883","license":"CVE Program Terms of Use","key":"cve-program:CVE-2024-26883","identifiers":["CVE-2024-26883"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. Missing entries do not establish absence of exploitation.","generation":"2026-11-09T21:04:24.7578035+00:00","complete":true,"records":1773,"lastAttemptAt":"2026-11-09T21:04:24.7578035+00:00","lastSuccessAt":"2026-11-09T21:04:24.9268553+00:00","error":null,"lastVerifiedAt":"2026-11-09T21:04:24.9268558+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"cve-program","scope":"Official CVE Program baseline and cumulative hourly delta; all vendors, published and rejected records","generation":"cve-24e6fde7b744113daefb8f6135035fb8a5c69c9617c9c0d40574a0376532ffd3-496c6c80845a4235d695039f4a651d70f3b55bc53fc01f5ca259c734136db852","complete":true,"records":421688,"lastAttemptAt":"2026-11-09T22:02:15.6116354+00:00","lastSuccessAt":"2026-11-09T22:02:15.4777453+00:00","error":null,"lastVerifiedAt":"2026-11-09T22:02:15.6116354+00:00","snapshotPublishedAt":"2026-11-09T21:30:28+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"euvd","scope":"Rolling EUVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. 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