net/sched: sch_cake: drop WARN_ON(1) for malformed packets in ACK filter (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.44 % · percentile 39 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Received
Description
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.
References
- https://git.kernel.org/stable/c/c1693b7844a6c06d31a565e5a494948034dfd235
- https://git.kernel.org/stable/c/a4b52612004a5639c4bfc30ba93ba414b8326e2a
- https://git.kernel.org/stable/c/ae1b2f8e21a41e7c7e75511bea0c4ccc59ec1bd3
- https://git.kernel.org/stable/c/0c4882bff34558d8d53fb04c3e96da5c327c7dc8
- https://git.kernel.org/stable/c/2504a76e5c0694e14e15562730e1339f2d9f9458
- https://git.kernel.org/stable/c/cd2f1d9fe8a507c2dc86ad326fe221f121c47734
- https://git.kernel.org/stable/c/a1ae353d8355407c1bea971d1c1af5e7f242bb7d
- https://git.kernel.org/stable/c/2a33516f9ef59ad11844d4fc152f889449b5daf3
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H | Linux |
| CVSS 3.1 | HIGH 8.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H | NVD · 416baaa9-dc9f-4396-8d5f-8c081fb06d67 (Secondary) |
European references
- ENISA EUVD · EUVD-2026-64391
- GCVE · GCVE-0-2026-74704
CERT-FR advisories
- CERTFR-2026-AVI-1385 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1333 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1286 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1232 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1163 — Multiples vulnérabilités dans le noyau Linux de Debian LTS · cert.ssi.gouv.fr
- CERTFR-2026-AVI-1090 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 8b7138814f29933898ecd31dfc83e35a30ee69f5 < c1693b7844a6c06d31a565e5a494948034dfd235 ; affected 8b7138814f29933898ecd31dfc83e35a30ee69f5 < a4b52612004a5639c4bfc30ba93ba414b8326e2a ; affected 8b7138814f29933898ecd31dfc83e35a30ee69f5 < ae1b2f8e21a41e7c7e75511bea0c4ccc59ec1bd3 ; affected 8b7138814f29933898ecd31dfc83e35a30ee69f5 < 0c4882bff34558d8d53fb04c3e96da5c327c7dc8 ; affected 8b7138814f29933898ecd31dfc83e35a30ee69f5 < 2504a76e5c0694e14e15562730e1339f2d9f9458 ; affected 8b7138814f29933898ecd31dfc83e35a30ee69f5 < cd2f1d9fe8a507c2dc86ad326fe221f121c47734 |
| Linux · Linux | affected 4.19 ; unaffected 0 < 4.19 ; unaffected 5.10.265 ≤ 5.10.* ; unaffected 5.15.216 ≤ 5.15.* ; unaffected 6.1.183 ≤ 6.1.* ; unaffected 6.6.152 ≤ 6.6.* |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |