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CVE-2026-53023

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: fs/ntfs3: terminate the cached volume label after UTF-8 conversion ntfs_fill_super() loads the on-disk volume label with utf16s…

Published Jun 24, 2026EPSS 0.16%

Overview

CVE-2026-53023 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:

fs/ntfs3: terminate the cached volume label after UTF-8 conversion

ntfs_fill_super() loads the on-disk volume label with utf16s_to_utf8s()

and stores the result in sbi->volume.label. The converted label is later

exposed through ntfs3_label_show() using %s, but utf16s_to_utf8s() only

returns the number of bytes written and does not add a trailing NUL.

If the converted label fills the entire fixed buffer,

ntfs3_label_show() can read past the end of sbi->volume.label while

looking for a terminator.

Terminate the cached label explicitly after a successful conversion and

clamp the exact-full case to the last byte of the buffer.

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/0b11fcbe80a59acdf58337d80ebb5f72201d73d6Refgit.kernel.org/stable/c/32b0686369e0afbb3549a0d93e2d8517da84cd30Refgit.kernel.org/stable/c/54d564b762389679e2f8fb9eeb20af7e82371e1cRefgit.kernel.org/stable/c/5cd0707b81cb4589f00aec5c4c1288bd0980d2a4Refgit.kernel.org/stable/c/6136bbb054f7ab9f51ae99915541633b18bcef90Refgit.kernel.org/stable/c/a6cd43fe9b083fa23fe1595666d5738856cb261aRefgit.kernel.org/stable/c/bc7a0c34c4ca259cfddf3bc18fc5b3c6411d26ed

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53023?

CVE-2026-53023 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-2026-53023?

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-2026-53023?

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-2026-53023?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53023 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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