CVE-2026-74704
CVE CVE-2026-74704EUVD EUVD-2026-64391Published 2026-08-22T15:33:03.000ZLast changed 2026-08-25T05:41:47.000ZCVSS 8.2
What the advisory describes
In the Linux kernel, the following vulnerability has been resolved: net/sched: sch_cake: drop WARN_ON(1) for malformed packets in ACK filter The sch_cake ACK filter parses packets to find the TCP header and filter duplicated ACKs if the flow is backlogged. The parsing code contains a WARN_ON(1) which can be triggered by a malformed IP header in certain cases. Depending on the system configuration, this leads either to either spamming dmesg with warnings, or a panic if panic_on_warn is set. The code already correctly skips the offending packet in the branch that triggers the warning, so the WARN_ON itself doesn't really serve any purpose. So just drop it altogether to avoid the inconvenient side effects.
Source: EUVD (ENISA), in the words of the advisory.
Products the advisory names
These come from the advisory itself, not from any check we performed.
- Linux — Linux patch: 6.18.45; patch: 7.2; patch: 5.15.216; 8b7138814f29933898ecd31dfc83e35a30ee69f5 <ae1b2f8e21a41e7c7e75511bea0c4ccc59ec1bd3; 8b7138814f29933898ecd31dfc83e35a30ee69f5 <0c4882bff34558d8d53fb04c3e96da5c327c7dc8; patch: 7.1.9; patch: 6.12.104; 8b7138814f29933898ecd31dfc83e35a30ee69f5 <a1ae353d8355407c1bea971d1c1af5e7f242bb7d; 8b7138814f29933898ecd31dfc83e35a30ee69f5 <c1693b7844a6c06d31a565e5a494948034dfd235; 8b7138814f29933898ecd31dfc83e35a30ee69f5 <2a33516f9ef59ad11844d4fc152f889449b5daf3; patch: 5.10.265; 4.19; 8b7138814f29933898ecd31dfc83e35a30ee69f5 <a4b52612004a5639c4bfc30ba93ba414b8326e2a; patch: 6.6.152; patch: 6.1.183; patch: 0; 8b7138814f29933898ecd31dfc83e35a30ee69f5 <2504a76e5c0694e14e15562730e1339f2d9f9458; 8b7138814f29933898ecd31dfc83e35a30ee69f5 <cd2f1d9fe8a507c2dc86ad326fe221f121c47734
The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.
Carried in the product catalogue
An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.
- Linux — Linux
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