ipv6: fix possible infinite loop in fib6_info_uses_dev()
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.2%
exploitation probability
0.2%top 95% of all CVEs
observed exploitation
nono source reports it
In the Linux kernel, the following vulnerability has been resolved:
ipv6: fix possible infinite loop in fib6_info_uses_dev()
fib6_info_uses_dev() seems to rely on RCU without an explicit
protection.
Like the prior fix in rt6_nlmsg_size(),
we need to make sure fib6_del_route() or fib6_add_rt2node()
have not removed the anchor from the list, or we risk an infinite loop.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/16d21816c0918f8058b5fc14cbe8595d62046e2dhttps://git.kernel.org/stable/c/9cb6de8ee144a94ae7a40bdb32560329ab7276f0https://git.kernel.org/stable/c/bc85e62394f008fa848c4ba02c936c735a3e8ef5https://git.kernel.org/stable/c/db65739d406c72776fbdbbc334be827ef05880d2https://git.kernel.org/stable/c/e09be457b71b983a085312ff9e981f51e4ed3211https://git.kernel.org/stable/c/f8d8ce1b515a0a6af72b30502670a406cfb75073https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html