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

What is CVE-2025-38287?

CVE-2025-38287 is a high-severity denial of service vulnerability in Linux kernel, published on 10 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Which versions are affected by CVE-2025-38287?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2025-38287?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2025-38287 being exploited?

There is no known exploitation of CVE-2025-38287 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2025-38287, GHSA-759j-pggr-8g4v, UBUNTU-CVE-2025-38287.