CVE-2026-97410 netconsole: take target_cleanup_list_lock in drop_netconsole_target()
A race condition in the Linux kernel netconsole module can cause list corruption and system crashes when targets are removed concurrently with cleanup operations.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-97410?
CVE-2026-97410 is a vulnerability in Linux, published on 24 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
netconsole: take target_cleanup_list_lock in drop_netconsole_target()
drop_netconsole_target() unlinks the target while only holding target_list_lock. However, when the underlying interface has been unregistered, netconsole_netdev_event() moves the target from target_list to target_cleanup_list, and netconsole_process_cleanups_core() walks that list under target_cleanup_list_lock only.
If a user removes the configfs target at the same time the cleanup worker is iterating target_cleanup_list, list_del() can corrupt the list because the two paths take disjoint locks while operating on the same list node.
Acquire target_cleanup_list_lock around the list_del() so the unlink is serialised against netconsole_process_cleanups_core() regardless of which list the target currently belongs to. The state transition that downgrades STATE_DEACTIVATED to STATE_DISABLED is left intact and is performed under the same combined locking, preserving the existing ordering with resume_target().
Which versions are affected by CVE-2026-97410?
How do I fix CVE-2026-97410?
Apply the vendor's patch.
Is CVE-2026-97410 being exploited?
There is no known exploitation of CVE-2026-97410 in the wild and no public exploit code.
Sources
Also known as AZL-103766, BELL-CVE-2026-97410, DEBIAN-CVE-2026-97410, GHSA-m57g-35wp-4xgr, UBUNTU-CVE-2026-97410.