CVE-2026-90180 block: mtip32xx: synchronize ioctls with device removal
A race condition in the mtip32xx block driver allows local attackers to trigger a use-after-free during device removal, potentially causing system crashes or code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-90180?
CVE-2026-90180 is a vulnerability in Linux, published on 17 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:
block: mtip32xx: synchronize ioctls with device removal
The ioctl handlers only test REMOVE_PENDING before entering mtip_hw_ioctl(). Removal can set that bit immediately afterwards and free dd->port in mtip_hw_exit() while an ioctl still dereferences it. An already open block device can reach the handlers while del_gendisk() is in progress.
Serialize both native and compat ioctls with removal. Set REMOVE_PENDING before taking the mutex so new callers fail after an in-flight ioctl has drained, and hold the mutex until the port has been torn down.
Which versions are affected by CVE-2026-90180?
How do I fix CVE-2026-90180?
Apply the vendor's patch.
Is CVE-2026-90180 being exploited?
There is no known exploitation of CVE-2026-90180 in the wild and no public exploit code.
Sources
Also known as AZL-102269, BELL-CVE-2026-90180, DEBIAN-CVE-2026-90180, GHSA-h84p-58mj-wq53, UBUNTU-CVE-2026-90180.