Description
In the Linux kernel, the following vulnerability has been resolved: net: ipv6: fix dst ref loops in rpl, seg6 and ioam6 lwtunnels Some lwtunnels have a dst cache for post-transformation dst. If the packet destination did not change we may end up recording a reference to the lwtunnel in its own cache, and the lwtunnel state will never be freed. Discovered by the ioam6.sh test, kmemleak was recently fixed to catch per-cpu memory leaks. I'm not sure if rpl and seg6 can actually hit this, but in principle I don't see why not.
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
6c8702c60b88651072460f3f4026c7dfe2521d12 to < 26f0b472ae2a82920e38c7cf41583951046d586aaffected6c8702c60b88651072460f3f4026c7dfe2521d12 to < e2ef3fa31353b30bda94358fe5205c141289746daffected6c8702c60b88651072460f3f4026c7dfe2521d12 to < 5ab11a4e219e93b8b31a27f8ec98d42afadd8b7aaffected6c8702c60b88651072460f3f4026c7dfe2521d12 to < 4c0f200c7d06fedddde82209c099014d63f4a6c0affected6c8702c60b88651072460f3f4026c7dfe2521d12 to < 92191dd1073088753821b862b791dcc83e558e07affected
Linux Linux
Default version status: affected
4.10affected0 to < 4.10unaffected6.1.191 to ≤ 6.1.*unaffected6.6.160 to ≤ 6.6.*unaffected6.12.16 to ≤ 6.12.*unaffected6.13.4 to ≤ 6.13.*unaffected6.14 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/26f0b472ae2a82920e38c7cf41583951046d586a ↗
- https://git.kernel.org/stable/c/e2ef3fa31353b30bda94358fe5205c141289746d ↗
- https://git.kernel.org/stable/c/5ab11a4e219e93b8b31a27f8ec98d42afadd8b7a ↗
- https://git.kernel.org/stable/c/4c0f200c7d06fedddde82209c099014d63f4a6c0 ↗
- https://git.kernel.org/stable/c/92191dd1073088753821b862b791dcc83e558e07 ↗