CVE-2026-80636
Description
AI Translation Available
In the Linux kernel, the following vulnerability has been resolved:
netfilter: conntrack: revert ct extension genid infrastructure
This infrastructure is not used anymore after moving ct timeout and
helper to use datapath refcount to track object use.
Revert commit c56716c69ce1 ('netfilter: extensions: introduce extension
genid count') this patch disables all ct extensions (leading to NULL)
for unconfirmed conntracks, when this is only targeted at ct helper and
ct timeout. There is also codebase that dereferences the ct extension
without checking for NULL which could lead to crash.
https://git.kernel.org/stable/c/35e21a4dccc5c255ba59ccfbfeb4629ed21da972
https://git.kernel.org/stable/c/61eab1d0237eb513fe73e391a5926ee70092c325
https://git.kernel.org/stable/c/6bba4846f196d081bf553391d12b5a73dcc48685
https://git.kernel.org/stable/c/a052a94bcc629acaecc2ce42a4af77f8fa399757
https://git.kernel.org/stable/c/d53eecbca16f056abba274075cb15120ab062518