CVE-2026-72101 dm-integrity: fix leaking uninitialized kernel memory
A bug in the Linux kernel dm-integrity module fails to zero memory, allowing local attackers to read uninitialized kernel memory.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72101?
CVE-2026-72101 is a vulnerability in Linux, published on 15 Aug 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:
dm-integrity: fix leaking uninitialized kernel memory
If hash size is less than device's tuple size, dm-integrity is supposed to zero the remaining space. There was a bug in the code that zeroing didn't work. This commit fixes it.
Which versions are affected by CVE-2026-72101?
How do I fix CVE-2026-72101?
Apply the vendor's patch.
Is CVE-2026-72101 being exploited?
There is no known exploitation of CVE-2026-72101 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72101, DEBIAN-CVE-2026-72101, GHSA-hxqh-5f52-gjp9, UBUNTU-CVE-2026-72101.