Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.11, < 5.15.201 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/1f1b9523527df02685dde603f20ff6e603d8e4a1Patch
- https://git.kernel.org/stable/c/338d40bab283da2639780ee3e458fb61f1567d8cPatch
- https://git.kernel.org/stable/c/455e882192c9833f176f3fbbbb2f036b6c5bf555Patch
- https://git.kernel.org/stable/c/51223bdd0f60b06cfc7f25885c4d4be917adba94Patch
- https://git.kernel.org/stable/c/7896dbe990d56d5bb8097863b2645355633665ebPatch
- https://git.kernel.org/stable/c/e2a9eeb69f7d4ca4cf4c70463af77664fdb6ab1dPatch
FAQ
What is CVE-2026-23169?
CVE-2026-23169 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 mptc...
How severe is CVE-2026-23169?
CVE-2026-23169 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23169?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.