{"id":"CVE-2024-40996","state":"PUBLISHED","title":"bpf: Avoid splat in pskb_pull_reason","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Avoid splat in pskb_pull_reason\n\nsyzkaller builds (CONFIG_DEBUG_NET=y) frequently trigger a debug\nhint in pskb_may_pull.\n\nWe'd like to retain this debug check because it might hint at integer\noverflows and other issues (kernel code should pull headers, not huge\nvalue).\n\nIn bpf case, this splat isn't interesting at all: such (nonsensical)\nbpf programs are typically generated by a fuzzer anyway.\n\nDo what Eric suggested and suppress such warning.\n\nFor CONFIG_DEBUG_NET=n we don't need the extra check because\npskb_may_pull will do the right thing: return an error without the\nWARN() backtrace.","publishedAt":"2024-07-12T12:37:38.454Z","updatedAt":"2026-05-23T15:51:21.401Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"8af60bb2b215f478b886f1d6d302fefa7f0b917d","status":"affected","lessThan":"dacc15e9cb248d19e5fc63c54bef0b9b55007761","versionType":"git"},{"version":"1b2b26595bb09febf14c5444c873ac4ec90a5a77","status":"affected","lessThan":"7f9644782c559635bd676c12c59389a34ed7c866","versionType":"git"},{"version":"219eee9c0d16f1b754a8b85275854ab17df0850a","status":"affected","lessThan":"5e90258303a358e88737afb5048bee9113beea3a","versionType":"git"},{"version":"219eee9c0d16f1b754a8b85275854ab17df0850a","status":"affected","lessThan":"2bbe3e5a2f4ef69d13be54f1cf895b4658287080","versionType":"git"},{"version":"fff05b2b004d9a8a2416d08647f3dc9068e357c8","status":"affected","versionType":"git"},{"version":"6.1.86","status":"affected","lessThan":"6.1.96","versionType":"semver"},{"version":"6.6.27","status":"affected","lessThan":"6.6.36","versionType":"semver"},{"version":"6.8.6","status":"affected","lessThan":"6.9","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/filter.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.9","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.9","versionType":"semver"},{"version":"6.1.96","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.36","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.9.7","status":"unaffected","lessThanOrEqual":"6.9.*","versionType":"semver"},{"version":"6.10","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/filter.c"]}],"references":["https://git.kernel.org/stable/c/dacc15e9cb248d19e5fc63c54bef0b9b55007761","https://git.kernel.org/stable/c/7f9644782c559635bd676c12c59389a34ed7c866","https://git.kernel.org/stable/c/5e90258303a358e88737afb5048bee9113beea3a","https://git.kernel.org/stable/c/2bbe3e5a2f4ef69d13be54f1cf895b4658287080","https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"],"weaknesses":[],"ingestedAt":"2026-10-29T20:07:39.287Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/40xxx/CVE-2024-40996.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-40996","state":"PUBLISHED","datePublished":"2024-07-12T12:37:38.454Z","dateUpdated":"2026-05-23T15:51:21.401Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2024-07-12T12:17:45.607Z"},"containers":{"cna":{"title":"bpf: Avoid splat in pskb_pull_reason","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Avoid splat in pskb_pull_reason\n\nsyzkaller builds (CONFIG_DEBUG_NET=y) frequently trigger a debug\nhint in pskb_may_pull.\n\nWe'd like to retain this debug check because it might hint at integer\noverflows and other issues (kernel code should pull headers, not huge\nvalue).\n\nIn bpf case, this splat isn't interesting at all: such (nonsensical)\nbpf programs are typically generated by a fuzzer anyway.\n\nDo what Eric suggested and suppress such warning.\n\nFor CONFIG_DEBUG_NET=n we don't need the extra check because\npskb_may_pull will do the right thing: return an error without the\nWARN() 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