CVE-2025-38287: IB/cm: Drop lockdep assert and WARN when freeing old msg

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-07-10 · updated 2026-07-30

Description

In the Linux kernel, the following vulnerability has been resolved: IB/cm: Drop lockdep assert and WARN when freeing old msg The send completion handler can run after cm_id has advanced to another message. The cm_id lock is not needed in this case, but a recent change re-used cm_free_priv_msg(), which asserts that the lock is held and WARNs if the cm_id's currently outstanding msg is different than the one being freed.

Affected products

Linux kernel: from 6.13 before 6.15.3 — fixed in 6.15.3

How to fix

Upgrade to a fixed version: Linux kernel 6.15.3. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2025-38287 or the next vulnerability affects your stack