Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: ipv6: prevent infinite loop in rt6_nlmsg_size() While testing prior patch, I was able to trigger an infinite loop in rt6_nlmsg_size() in the following place: list_for_each_entry_rcu(sibling, &f6i->fib6_siblings, fib6_siblings) { rt6_nh_nlmsg_size(sibling->fib6_nh, &nexthop_len); } This is because fib6_del_route() and fib6_add_rt2node() uses list_del_rcu(), which can confuse rcu readers, because they might no longer see the head of the list. Restart the loop if f6i->fib6_nsiblings is zero.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected d0ec61c9f3583b76aebdbb271f5c0d3fcccd48b2 before 6d345136c9b875f065d226908a29c25cdf9343f8; affected 52da02521ede55fb86546c3fffd9377b3261b91f before e1b7932af47f92432be8303d2439d1bf77b0be23; affected 34a949e7a0869dfa31a40416d2a56973fae1807b before cd8d8bbd9ced4cc5d06d858f67d4aa87745e8f38; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b before 3c13db3e47e170bab19e574404e7b6be45ea873d; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b before 46aeb66e9e54ed0d56c18615e1c3dbd502b327ab; affected d9ccb18f83ea2bb654289b6ecf014fd267cc988b before 54e6fe9dd3b0e7c481c2228782c9494d653546da; affected 11edcd026012ac18acee0f1514db3ed1b160fc6f; affected 6.1.128 before 6.1.148; affected 6.6.75 before 6.6.102; affected 6.12.2 before 6.12.42; affected 6.11.11 before 6.12 |
| Linux / Linux | affected 6.13; unaffected 0 before 6.13; unaffected 6.1.148 through 6.1.*; unaffected 6.6.102 through 6.6.*; unaffected 6.12.42 through 6.12.*; unaffected 6.15.10 through 6.15.*; unaffected 6.16.1 through 6.16.*; unaffected 6.17 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/6d345136c9b875f065d226908a29c25cdf9343f8
- https://git.kernel.org/stable/c/e1b7932af47f92432be8303d2439d1bf77b0be23
- https://git.kernel.org/stable/c/cd8d8bbd9ced4cc5d06d858f67d4aa87745e8f38
- https://git.kernel.org/stable/c/3c13db3e47e170bab19e574404e7b6be45ea873d
- https://git.kernel.org/stable/c/46aeb66e9e54ed0d56c18615e1c3dbd502b327ab
- https://git.kernel.org/stable/c/54e6fe9dd3b0e7c481c2228782c9494d653546da
ADP enrichment
No English description supplied.