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CVE-2025-71084

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: RDMA/cm: Fix leaking the multicast GID table reference If the CM ID is destroyed while the CM event for multicast creating is s…

Published Jan 13, 2026EPSS 0.14%

Overview

CVE-2025-71084 is a medium-severity vulnerability. It was published on January 13, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

RDMA/cm: Fix leaking the multicast GID table reference

If the CM ID is destroyed while the CM event for multicast creating is

still queued the cancel_work_sync() will prevent the work from running

which also prevents destroying the ah_attr. This leaks a refcount and

triggers a WARN:

GID entry ref leak for dev syz1 index 2 ref=573

WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 release_gid_table drivers/infiniband/core/cache.c:806 [inline]

WARNING: CPU: 1 PID: 655 at drivers/infiniband/core/cache.c:809 gid_table_release_one+0x284/0x3cc drivers/infiniband/core/cache.c:886

Destroy the ah_attr after canceling the work, it is safe to call this

twice.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/3ba6d01c4b3c584264dc733c6a2ecc5bbc8e0bb5Refgit.kernel.org/stable/c/57f3cb6c84159d12ba343574df2115fb18dd83caRefgit.kernel.org/stable/c/5cb34bb5fd726491b809efbeb5cfd63ae5bf9cf3Refgit.kernel.org/stable/c/ab668a58c4a2ccb6d54add7a76f2f955d15d0196Refgit.kernel.org/stable/c/abf38398724ecc888f62c678d288da40d11878afRefgit.kernel.org/stable/c/c0acdee513239e1d6e1b490f56be0e6837dfd162Refgit.kernel.org/stable/c/d5ce588a9552878859a4d44b70b724216c188a5f

How CyberStrike helps

Frequently asked questions

What is CVE-2025-71084?

CVE-2025-71084 is a medium-severity vulnerability. It was published on January 13, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2025-71084?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2025-71084?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2025-71084?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2025-71084 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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