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CVE-2026-53063

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: dm cache: fix write hang in passthrough mode The invalidate_remove() function has incomplete logic for handling write hit bios…

Published Jun 24, 2026EPSS 0.13%

Overview

CVE-2026-53063 is a medium-severity vulnerability. It was published on June 24, 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:

dm cache: fix write hang in passthrough mode

The invalidate_remove() function has incomplete logic for handling write

hit bios after cache invalidation. It sets up the remapping for the

overwrite_bio but then drops it immediately without submission, causing

write operations to hang.

Fix by adding a new invalidate_committed() continuation that submits

the remapped writes to the cache origin after metadata commit completes,

while using the overwrite_endio hook to ensure proper completion

sequencing. This maintains existing coherency. Also improve error

handling in invalidate_complete() to preserve the original error status

instead of using bio_io_error() unconditionally.

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/05798d091ebcfb6d68228890e593f209e8ac940dRefgit.kernel.org/stable/c/4ca8b8bd952df7c3ccdc68af9bd3419d0839a04bRefgit.kernel.org/stable/c/64d6519b00be4116d365bd31f33a5e5ce2944c1aRefgit.kernel.org/stable/c/9fa18d0b981776b190ca4632942a7c2174052b78Refgit.kernel.org/stable/c/b8ace9e96983abb20ccf39edce8a60f1bb0b83d8Refgit.kernel.org/stable/c/ecb10c193cbebf5e6984246a9b4ff1f95d45ed87

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53063?

CVE-2026-53063 is a medium-severity vulnerability. It was published on June 24, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-53063?

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-2026-53063?

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-2026-53063?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53063 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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