CVE-2026-80875
Description
In the Linux kernel, the following vulnerability has been resolved: ipvs: use parsed transport offset in TCP state lookup TCP state handling reparses the skb to find the TCP header. For IPv6 it uses sizeof(struct ipv6hdr), while the surrounding IPVS code already parsed the packet with ip_vs_fill_iph_skb() and has the real transport-header offset in iph.len. This makes TCP state handling look at the wrong bytes when an IPv6 packet carries extension headers. Use the parsed transport offset passed down from ip_vs_set_state() when reading the TCP header. For IPv4 and for IPv6 packets without extension headers, the passed offset matches the previous value.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://git.kernel.org/stable/c/2500fa3958b1ba51c2b065e39db1b04dfa7e23a2
- https://git.kernel.org/stable/c/2d06e0897ce18228d199887f0823b431d841dd03
- https://git.kernel.org/stable/c/5848e914b85e360a2dd9d19c00a72e2ea9617dd0
- https://git.kernel.org/stable/c/816efb7fc0aeae986e63ac73b428dd97a4ef69f5
- https://git.kernel.org/stable/c/c2ee845e292c278fac75bf28d96bc892607fd5c4
- https://git.kernel.org/stable/c/d45f73c274435703e8d7bc9d8b742a5d9111ab6e
- https://git.kernel.org/stable/c/d73f4249776dd970ad65a69cfc51613dd8a034bb
- https://git.kernel.org/stable/c/f6f550f26562d191c30b2818e7925dcb1c7f166c
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.