Description
In the Linux kernel, the following vulnerability has been resolved: ipv4: do not warn on route notification size race Commit 680aea08e78c ("net: ipv4: Emit notification when fib hardware flags are changed") added asynchronous route notifications for hardware flag changes. fib_alias_hw_flags_set() sizes the skb with fib_nlmsg_size() and later fills it with fib_dump_info() while holding only RCU. With nexthop compatibility mode enabled, a concurrent replacement can grow the group between these independent snapshots. fib_dump_info() can then legitimately return -EMSGSIZE, so the warning does not prove a sizing bug. Remove the warning. The existing error path still frees the skb and reports the error to listeners.
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
680aea08e78c003292415518ad270bc20f9c80b1 to < 8b35e7767fdee63e57948a1ec89d9238a651f8c6affected680aea08e78c003292415518ad270bc20f9c80b1 to < 096ad0cb77f8da1928d04a0d170535e14ca6311baffected680aea08e78c003292415518ad270bc20f9c80b1 to < 088ba80eef85fa7a5ad8f9e7c82b403c99242b56affected680aea08e78c003292415518ad270bc20f9c80b1 to < 78a1cf5c54b2f795c81fedb530755a8d01cc84f0affected680aea08e78c003292415518ad270bc20f9c80b1 to < 7dfa7ca97f3ac46353edd4cc44f7733758e4535baffected680aea08e78c003292415518ad270bc20f9c80b1 to < 221ef5e1e44a044790f0f54e6aa237883f475a4daffected680aea08e78c003292415518ad270bc20f9c80b1 to < e02a5b6588161673ef75a4bc5cdfb62bd493374daffected
Linux Linux
Default version status: affected
5.12affected0 to < 5.12unaffected5.15.224 to ≤ 5.15.*unaffected6.1.191 to ≤ 6.1.*unaffected6.6.160 to ≤ 6.6.*unaffected6.12.113 to ≤ 6.12.*unaffected6.18.57 to ≤ 6.18.*unaffected7.2.11 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/8b35e7767fdee63e57948a1ec89d9238a651f8c6 ↗
- https://git.kernel.org/stable/c/096ad0cb77f8da1928d04a0d170535e14ca6311b ↗
- https://git.kernel.org/stable/c/088ba80eef85fa7a5ad8f9e7c82b403c99242b56 ↗
- https://git.kernel.org/stable/c/78a1cf5c54b2f795c81fedb530755a8d01cc84f0 ↗
- https://git.kernel.org/stable/c/7dfa7ca97f3ac46353edd4cc44f7733758e4535b ↗
- https://git.kernel.org/stable/c/221ef5e1e44a044790f0f54e6aa237883f475a4d ↗
- https://git.kernel.org/stable/c/e02a5b6588161673ef75a4bc5cdfb62bd493374d ↗