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.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 6c8702c60b88651072460f3f4026c7dfe2521d12, < e2ef3fa31353b30bda94358fe5205c141289746d; >= 6c8702c60b88651072460f3f4026c7dfe2521d12, < 5ab11a4e219e93b8b31a27f8ec98d42afadd8b7a; >= 6c8702c60b88651072460f3f4026c7dfe2521d12, < 4c0f200c7d06fedddde82209c099014d63f4a6c0; >= 6c8702c60b88651072460f3f4026c7dfe2521d12, < 92191dd1073088753821b862b791dcc83e558e07 |
| Linux | Linux | 4.10 |
References
- https://git.kernel.org/stable/c/4c0f200c7d06fedddde82209c099014d63f4a6c0Patch
- https://git.kernel.org/stable/c/5ab11a4e219e93b8b31a27f8ec98d42afadd8b7aPatch
- https://git.kernel.org/stable/c/92191dd1073088753821b862b791dcc83e558e07Patch
- https://git.kernel.org/stable/c/e2ef3fa31353b30bda94358fe5205c141289746d
Timeline
- Published
- Feb 27, 2025
- Last modified
- Oct 21, 2026
- NVD status
- Modified