CVE-2026-72100: dm-integrity: fix a bug if the bio is out of limits

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-15 · updated 2026-10-19
Weakness: CWE-667

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.

Affected products

Linux kernel: 6.11 — fixed in 7.2

How to fix

Upgrade to a fixed version: Linux kernel 7.2. Check the vendor advisory for mitigations.

References

https://git.kernel.org/stable/c/3d1afaa074622859678b1a1e7c1b9c0af74c89b0
https://git.kernel.org/stable/c/5a266764fadaff8b5c1fe37a186ebf9b09cb953e
https://git.kernel.org/stable/c/aa5113e7155f4ea81d2c0303ab5cb272d4b32627
https://git.kernel.org/stable/c/f7989286175f32db8605e767a1a2efc62e894dc8

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