Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in fib6_select_path() Found while auditing the same pattern Sashiko reported in rt6_fill_node() [1]. Apply the same fix as commit f8d8ce1b515a ("ipv6: fix possible infinite loop in fib6_info_uses_dev()"). Writers holding tb6_lock can list_del_rcu(&first->fib6_siblings) without waiting for RCU readers; first->fib6_siblings.next then still points into the old ring and this softirq-side walker never reaches &first->fib6_siblings as its terminator. fib6_purge_rt() always WRITE_ONCE()s first->fib6_nsiblings to 0 before list_del_rcu(), so an inside-loop check is a reliable detach signal. [1] https://sashiko.dev/#/patchset/20260526020227.4857-1-jiayuan.chen%40linux.dev
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d0ec61c9f3583b76aebdbb271f5c0d3fcccd48b2 before 3948a7d92f7678e89e1776bb2d169afcad63b1ae; affected 52da02521ede55fb86546c3fffd9377b3261b91f before c87cd3cb309634bc8f50a54e2079424f219ac21f; affected 34a949e7a0869dfa31a40416d2a56973fae1807b before 0f7b73c3452635de83b8711b31abdda8e49aad7b; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b before ab9a10969a907b472a0196d999c08ff7144172e3; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b before 9b9d5bd6e3d4c9cecab5407604b690684b2532d2; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b before 9c7da87c2dc860bb17ca1ece942495d28b1ce3b9; affected 11edcd026012ac18acee0f1514db3ed1b160fc6f; affected 6.1.128 before 6.1.176; affected 6.6.75 before 6.6.143; affected 6.12.2 before 6.12.93; affected 6.11.11 before 6.12 |
| Linux / Linux | affected 6.13; unaffected 0 before 6.13; unaffected 6.1.176 through 6.1.*; unaffected 6.6.143 through 6.6.*; unaffected 6.12.93 through 6.12.*; unaffected 6.18.35 through 6.18.*; unaffected 7.0.12 through 7.0.*; unaffected 7.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/3948a7d92f7678e89e1776bb2d169afcad63b1ae
- https://git.kernel.org/stable/c/c87cd3cb309634bc8f50a54e2079424f219ac21f
- https://git.kernel.org/stable/c/0f7b73c3452635de83b8711b31abdda8e49aad7b
- https://git.kernel.org/stable/c/ab9a10969a907b472a0196d999c08ff7144172e3
- https://git.kernel.org/stable/c/9b9d5bd6e3d4c9cecab5407604b690684b2532d2
- https://git.kernel.org/stable/c/9c7da87c2dc860bb17ca1ece942495d28b1ce3b9
ADP enrichment
No English description supplied.
No references supplied.