CVE-2026-72100 dm-integrity: fix a bug if the bio is out of limits
A bug in the Linux kernel dm-integrity module causes a deadlock when a bio exceeds limits, leading to a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72100?
CVE-2026-72100 is a high-severity vulnerability in Linux, published on 15 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
dm-integrity: fix a bug if the bio is out of limits
If dm_integrity_check_limits fails, the code would exit with DM_MAPIO_KILL. However, the range would be already locked at this point, and it wouldn't be unlocked, resulting in a deadlock. Let's move the limit check up, so that when it exits, no resources are leaked.
Weakness: CWE-667
Which versions are affected by CVE-2026-72100?
How do I fix CVE-2026-72100?
Apply the vendor's patch.
Is CVE-2026-72100 being exploited?
There is no known exploitation of CVE-2026-72100 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72100, DEBIAN-CVE-2026-72100, GHSA-3r62-w556-w3c9, UBUNTU-CVE-2026-72100.