Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ipv6: fix possible infinite loop in rt6_fill_node() Sashiko reported this issue [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(&rt->fib6_siblings) without waiting for RCU readers; rt->fib6_siblings.next then still points into the old ring and this softirq-side walker never reaches &rt->fib6_siblings, causing a CPU stall. fib6_del_route() always WRITE_ONCE()s rt->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 b014a63d2f2c2c767762b548381882dfb1655529; affected 52da02521ede55fb86546c3fffd9377b3261b91f before 279853aec9f58d5cd723e6e5617c1c3337b30383; affected 34a949e7a0869dfa31a40416d2a56973fae1807b before c65b1f60237daac7c56c2652e064cc566a45dc81; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b before dc36a04621dcc2447dae428709207810b6c06e14; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b before 5e40de719ee76b8d96e2556ce36dbd3bd07bf37d; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b before 9f72412bcf60144f252b0d6205106abf14344abc; 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/b014a63d2f2c2c767762b548381882dfb1655529
- https://git.kernel.org/stable/c/279853aec9f58d5cd723e6e5617c1c3337b30383
- https://git.kernel.org/stable/c/c65b1f60237daac7c56c2652e064cc566a45dc81
- https://git.kernel.org/stable/c/dc36a04621dcc2447dae428709207810b6c06e14
- https://git.kernel.org/stable/c/5e40de719ee76b8d96e2556ce36dbd3bd07bf37d
- https://git.kernel.org/stable/c/9f72412bcf60144f252b0d6205106abf14344abc