CVE-2026-23169
mptcp: fix race in mptcp_pm_nl_flush_addrs_doit()
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
1th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Feb 14, 2026 |
| Last Updated | Apr 3, 2026 |
Stay Ahead of the Next One
Get instant alerts for linux linux
Be the first to know when new high vulnerabilities affecting linux linux are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
141694df6573b49aa4143c92556544b4b0bbda72 < 338d40bab283da2639780ee3e458fb61f1567d8c 141694df6573b49aa4143c92556544b4b0bbda72 < 7896dbe990d56d5bb8097863b2645355633665eb 141694df6573b49aa4143c92556544b4b0bbda72 < 455e882192c9833f176f3fbbbb2f036b6c5bf555 141694df6573b49aa4143c92556544b4b0bbda72 < 51223bdd0f60b06cfc7f25885c4d4be917adba94 141694df6573b49aa4143c92556544b4b0bbda72 < 1f1b9523527df02685dde603f20ff6e603d8e4a1 141694df6573b49aa4143c92556544b4b0bbda72 < e2a9eeb69f7d4ca4cf4c70463af77664fdb6ab1d
Linux / Linux
5.11
References
git.kernel.org: https://git.kernel.org/stable/c/338d40bab283da2639780ee3e458fb61f1567d8c git.kernel.org: https://git.kernel.org/stable/c/7896dbe990d56d5bb8097863b2645355633665eb git.kernel.org: https://git.kernel.org/stable/c/455e882192c9833f176f3fbbbb2f036b6c5bf555 git.kernel.org: https://git.kernel.org/stable/c/51223bdd0f60b06cfc7f25885c4d4be917adba94 git.kernel.org: https://git.kernel.org/stable/c/1f1b9523527df02685dde603f20ff6e603d8e4a1 git.kernel.org: https://git.kernel.org/stable/c/e2a9eeb69f7d4ca4cf4c70463af77664fdb6ab1d