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CVE-2026-46053

7.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net: rds: fix MR cleanup on copy error __rds_rdma_map() hands sg/pages ownership to the transport after get_mr() succeeds.

Published May 27, 2026EPSS 0.18%

Overview

CVE-2026-46053 is a high-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. 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:

net: rds: fix MR cleanup on copy error

__rds_rdma_map() hands sg/pages ownership to the transport after

get_mr() succeeds. If copying the generated cookie back to user space

fails after that point, the error path must not free those resources

again before dropping the MR reference.

Remove the duplicate unpin/free from the put_user() failure branch so

that MR teardown is handled only through the existing final cleanup

path.

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/033370ffb3c9c0264d19f8ba9ef769523266589aRefgit.kernel.org/stable/c/106dc689206610cfa2098f593fdd1e020c997835Refgit.kernel.org/stable/c/8141a2dc70080eda1aedc0389ed2db2b292af5bdRefgit.kernel.org/stable/c/8fdbb6262a4a3ed44a0830a7793903b54bb27bdcRefgit.kernel.org/stable/c/91a44b406bc1f9e1c5da0cb7d0d5991b43b79147Refgit.kernel.org/stable/c/b3cb8cae530b2727d8245684148bb49425f6765cRefgit.kernel.org/stable/c/d95cea9298be1ba8876e3f156be96d3a492085caRefgit.kernel.org/stable/c/ec55a86f7fba7d9111df94b9c11a4755ed492995

How CyberStrike helps

Frequently asked questions

What is CVE-2026-46053?

CVE-2026-46053 is a high-severity vulnerability. It was published on May 27, 2026 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2026-46053?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-46053?

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-2026-46053?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-46053 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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