Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: ipv6: do not warn on route notification size race fib6_info_hw_flags_set() sizes the skb with rt6_nlmsg_size() and later fills it with rt6_fill_node(). With nexthop compatibility mode enabled, a concurrent replacement can grow the group between these independent snapshots. rt6_fill_node() 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.
References
- https://git.kernel.org/stable/c/24b2c95a046e15c9504a6d672b6b0b252952493f
- https://git.kernel.org/stable/c/291fe0bafee78c95f9f2e7f579f17793fd5a1e5a
- https://git.kernel.org/stable/c/4ac7d92a4698e34e614c254359665b9de1f65283
- https://git.kernel.org/stable/c/7b112bd43f1172fb152e848570a957467008a5ae
- https://git.kernel.org/stable/c/8a3b935b6b6037eefb36bd27a60793a008358e8d
- https://git.kernel.org/stable/c/c97426ec649d99596d8969e1a052c16b14b7b485
- https://git.kernel.org/stable/c/dac2b0328495971c7b417fd0143e53643343936e
FAQ
What is CVE-2026-99070?
CVE-2026-99070 is a documented vulnerability. In the Linux kernel, the following vulnerability has been resolved: ipv6: do not warn on route notification size race fib6_info_hw_flags_set() sizes the skb with rt6_nlmsg_size() and later fills it ...
How severe is CVE-2026-99070?
CVSS scoring is not yet available for CVE-2026-99070. Check NVD for updates.
Is there a patch for CVE-2026-99070?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.