Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
c56716c69ce1ac320432fb1ea5654196ba24d2f8 to < 6bba4846f196d081bf553391d12b5a73dcc48685affectedc56716c69ce1ac320432fb1ea5654196ba24d2f8 to < 61eab1d0237eb513fe73e391a5926ee70092c325affectedc56716c69ce1ac320432fb1ea5654196ba24d2f8 to < d53eecbca16f056abba274075cb15120ab062518affectedc56716c69ce1ac320432fb1ea5654196ba24d2f8 to < a052a94bcc629acaecc2ce42a4af77f8fa399757affectedc56716c69ce1ac320432fb1ea5654196ba24d2f8 to < 35e21a4dccc5c255ba59ccfbfeb4629ed21da972affected
Linux Linux
Default version status: affected
5.19affected0 to < 5.19unaffected6.6.145 to ≤ 6.6.*unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/6bba4846f196d081bf553391d12b5a73dcc48685 ↗
- https://git.kernel.org/stable/c/61eab1d0237eb513fe73e391a5926ee70092c325 ↗
- https://git.kernel.org/stable/c/d53eecbca16f056abba274075cb15120ab062518 ↗
- https://git.kernel.org/stable/c/a052a94bcc629acaecc2ce42a4af77f8fa399757 ↗
- https://git.kernel.org/stable/c/35e21a4dccc5c255ba59ccfbfeb4629ed21da972 ↗