ipv6: fix possible infinite loop in fib6_info_uses_dev()
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.
02 / AFFECTED SOFTWARE
Affected packages
932 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/16d21816c0918f8058b5fc14cbe8595d62046e2d
- https://git.kernel.org/stable/c/9cb6de8ee144a94ae7a40bdb32560329ab7276f0
- https://git.kernel.org/stable/c/bc85e62394f008fa848c4ba02c936c735a3e8ef5
- https://git.kernel.org/stable/c/db65739d406c72776fbdbbc334be827ef05880d2
- https://git.kernel.org/stable/c/e09be457b71b983a085312ff9e981f51e4ed3211
- https://git.kernel.org/stable/c/f8d8ce1b515a0a6af72b30502670a406cfb75073
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38587.json
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
- https://nvd.nist.gov/vuln/detail/CVE-2025-38587