CVE-2026-99070
ipv6: do not warn on route notification size race
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 23, 2026 |
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Affected Versions
Linux / Linux
907eea486888cfe118c19759bbc4b8fca2e004df < 8a3b935b6b6037eefb36bd27a60793a008358e8d 907eea486888cfe118c19759bbc4b8fca2e004df < 7b112bd43f1172fb152e848570a957467008a5ae 907eea486888cfe118c19759bbc4b8fca2e004df < 4ac7d92a4698e34e614c254359665b9de1f65283 907eea486888cfe118c19759bbc4b8fca2e004df < 291fe0bafee78c95f9f2e7f579f17793fd5a1e5a 907eea486888cfe118c19759bbc4b8fca2e004df < c97426ec649d99596d8969e1a052c16b14b7b485
Linux / Linux
5.12
References
git.kernel.org: https://git.kernel.org/stable/c/8a3b935b6b6037eefb36bd27a60793a008358e8d git.kernel.org: https://git.kernel.org/stable/c/7b112bd43f1172fb152e848570a957467008a5ae git.kernel.org: https://git.kernel.org/stable/c/4ac7d92a4698e34e614c254359665b9de1f65283 git.kernel.org: https://git.kernel.org/stable/c/291fe0bafee78c95f9f2e7f579f17793fd5a1e5a git.kernel.org: https://git.kernel.org/stable/c/c97426ec649d99596d8969e1a052c16b14b7b485