{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-74704","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-15T05:44:03.927Z","datePublished":"2026-08-22T15:33:03.491Z","dateUpdated":"2026-08-22T15:33:03.491Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-08-22T15:33:03.491Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_cake: drop WARN_ON(1) for malformed packets in ACK filter\n\nThe sch_cake ACK filter parses packets to find the TCP header and filter\nduplicated ACKs if the flow is backlogged. The parsing code contains a\nWARN_ON(1) which can be triggered by a malformed IP header in certain\ncases. Depending on the system configuration, this leads either to\neither spamming dmesg with warnings, or a panic if panic_on_warn is set.\n\nThe code already correctly skips the offending packet in the branch that\ntriggers the warning, so the WARN_ON itself doesn't really serve any\npurpose. So just drop it altogether to avoid the inconvenient side\neffects."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sched/sch_cake.c"],"versions":[{"version":"8b7138814f29933898ecd31dfc83e35a30ee69f5","lessThan":"c1693b7844a6c06d31a565e5a494948034dfd235","status":"affected","versionType":"git"},{"version":"8b7138814f29933898ecd31dfc83e35a30ee69f5","lessThan":"a4b52612004a5639c4bfc30ba93ba414b8326e2a","status":"affected","versionType":"git"},{"version":"8b7138814f29933898ecd31dfc83e35a30ee69f5","lessThan":"ae1b2f8e21a41e7c7e75511bea0c4ccc59ec1bd3","status":"affected","versionType":"git"},{"version":"8b7138814f29933898ecd31dfc83e35a30ee69f5","lessThan":"0c4882bff34558d8d53fb04c3e96da5c327c7dc8","status":"affected","versionType":"git"},{"version":"8b7138814f29933898ecd31dfc83e35a30ee69f5","lessThan":"2504a76e5c0694e14e15562730e1339f2d9f9458","status":"affected","versionType":"git"},{"version":"8b7138814f29933898ecd31dfc83e35a30ee69f5","lessThan":"cd2f1d9fe8a507c2dc86ad326fe221f121c47734","status":"affected","versionType":"git"},{"version":"8b7138814f29933898ecd31dfc83e35a30ee69f5","lessThan":"a1ae353d8355407c1bea971d1c1af5e7f242bb7d","status":"affected","versionType":"git"},{"version":"8b7138814f29933898ecd31dfc83e35a30ee69f5","lessThan":"2a33516f9ef59ad11844d4fc152f889449b5daf3","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sched/sch_cake.c"],"versions":[{"version":"4.19","status":"affected"},{"version":"0","lessThan":"4.19","status":"unaffected","versionType":"semver"},{"version":"5.10.265","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.216","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.183","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.152","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.104","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.45","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.9","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.10.265"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.15.216"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.1.183"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.6.152"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.12.104"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.18.45"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.1.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.2"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/c1693b7844a6c06d31a565e5a494948034dfd235"},{"url":"https://git.kernel.org/stable/c/a4b52612004a5639c4bfc30ba93ba414b8326e2a"},{"url":"https://git.kernel.org/stable/c/ae1b2f8e21a41e7c7e75511bea0c4ccc59ec1bd3"},{"url":"https://git.kernel.org/stable/c/0c4882bff34558d8d53fb04c3e96da5c327c7dc8"},{"url":"https://git.kernel.org/stable/c/2504a76e5c0694e14e15562730e1339f2d9f9458"},{"url":"https://git.kernel.org/stable/c/cd2f1d9fe8a507c2dc86ad326fe221f121c47734"},{"url":"https://git.kernel.org/stable/c/a1ae353d8355407c1bea971d1c1af5e7f242bb7d"},{"url":"https://git.kernel.org/stable/c/2a33516f9ef59ad11844d4fc152f889449b5daf3"}],"title":"net/sched: sch_cake: drop WARN_ON(1) for malformed packets in ACK filter","x_generator":{"engine":"bippy-1.2.0"}}}}