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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2Patches
Vulnerability mechanics
References
8- git.kernel.org/stable/c/2500fa3958b1ba51c2b065e39db1b04dfa7e23a2nvd
- git.kernel.org/stable/c/2d06e0897ce18228d199887f0823b431d841dd03nvd
- git.kernel.org/stable/c/5848e914b85e360a2dd9d19c00a72e2ea9617dd0nvd
- git.kernel.org/stable/c/816efb7fc0aeae986e63ac73b428dd97a4ef69f5nvd
- git.kernel.org/stable/c/c2ee845e292c278fac75bf28d96bc892607fd5c4nvd
- git.kernel.org/stable/c/d45f73c274435703e8d7bc9d8b742a5d9111ab6envd
- git.kernel.org/stable/c/d73f4249776dd970ad65a69cfc51613dd8a034bbnvd
- git.kernel.org/stable/c/f6f550f26562d191c30b2818e7925dcb1c7f166cnvd
News mentions
0No linked articles in our index yet.