UNKNOWN NVD
CVE-2026-80636
In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: revert ct extension genid infrastructure This infrastructure is not
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.
References
- 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
This unknown severity vulnerability was published on 2026-08-28 via NVD.
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