{"id":"CVE-2026-99071","published":"2026-10-23T13:17:31.027","lastModified":"2026-10-23T13:17:31.027","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nipv4: do not warn on route notification size race\n\nCommit 680aea08e78c (\"net: ipv4: Emit notification when fib hardware\nflags are changed\") added asynchronous route notifications for hardware\nflag changes.\n\nfib_alias_hw_flags_set() sizes the skb with fib_nlmsg_size() and later\nfills it with fib_dump_info() while holding only RCU.  With nexthop\ncompatibility mode enabled, a concurrent replacement can grow the group\nbetween these independent snapshots.  fib_dump_info() can then\nlegitimately return -EMSGSIZE, so the warning does not prove a sizing bug.\n\nRemove the warning.  The existing error path still frees the skb and\nreports the error to listeners.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":[],"vendors":[],"products":[],"references":[{"url":"https://git.kernel.org/stable/c/088ba80eef85fa7a5ad8f9e7c82b403c99242b56","tags":[]},{"url":"https://git.kernel.org/stable/c/221ef5e1e44a044790f0f54e6aa237883f475a4d","tags":[]},{"url":"https://git.kernel.org/stable/c/78a1cf5c54b2f795c81fedb530755a8d01cc84f0","tags":[]},{"url":"https://git.kernel.org/stable/c/7dfa7ca97f3ac46353edd4cc44f7733758e4535b","tags":[]},{"url":"https://git.kernel.org/stable/c/e02a5b6588161673ef75a4bc5cdfb62bd493374d","tags":[]}],"exploitRefs":[],"hasPoc":false,"ai":null}