CVE-2026-23169

In the Linux kernel, the following vulnerability has been resolved: mptcp: fix race in mptcp_pm_nl_flush_addrs_doit() syzbot and Eulgyu Kim reported crashes in mptcp_pm_nl_get_local_id() and/or mptcp_pm_nl_is_backup() Root cause is list_splice_init() in mptcp_pm_nl_flush_addrs_doit() which is not RCU ready. list_splice_init_rcu() can not be called here while holding pernet->lock spinlock. Many thanks to Eulgyu Kim for providing a repro and testing our patches.

The following products are affected by CVE-2026-23169 vulnerability.

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-23169.

URL	Resource
https://git.kernel.org/stable/c/1f1b9523527df02685dde603f20ff6e603d8e4a1
https://git.kernel.org/stable/c/338d40bab283da2639780ee3e458fb61f1567d8c
https://git.kernel.org/stable/c/455e882192c9833f176f3fbbbb2f036b6c5bf555
https://git.kernel.org/stable/c/51223bdd0f60b06cfc7f25885c4d4be917adba94
https://git.kernel.org/stable/c/7896dbe990d56d5bb8097863b2645355633665eb
https://git.kernel.org/stable/c/e2a9eeb69f7d4ca4cf4c70463af77664fdb6ab1d
https://lore.kernel.org/linux-cve-announce/2026021420-CVE-2026-23169-38ea@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2026-23169
https://www.cve.org/CVERecord?id=CVE-2026-23169