What is CVE-2026-53023?

CVE-2026-53023 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.15 onward and patched in 5.15.209, 6.1.175, 6.6.141 and others. CVE-2026-53023 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-53023?

CVE-2026-53023 has a CVSS score of 5.5 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Is there a patch available for CVE-2026-53023?

Yes, CVE-2026-53023 has been patched. Fixed versions include 5.15.209, 6.1.175, 6.6.141 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-53023 actively exploited?

CVE-2026-53023 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-53023

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_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.

Package Linux Kernel

Published 2026-06-24

Last modified 2026-07-15

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.5

out of 10

Medium

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

High

Vector string

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected versions

Linux kernel versions 5.15 and later are affected. Fixed in 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10, 7.1 and their respective stable series.

Affected from

≥ 5.15

Fixed in

✓ 5.15.209 5.15.x ✓ 6.1.175 6.1.x ✓ 6.6.141 6.6.x ✓ 6.12.91 6.12.x ✓ 6.18.33 6.18.x ✓ 7.0.10 7.0.x ✓ 7.1

References

7 total

Kernel Git
https://git.kernel.org/stable/c/0b11fcbe80a59acdf58337d80ebb5f72201d73d6

Patch
Kernel Git
https://git.kernel.org/stable/c/32b0686369e0afbb3549a0d93e2d8517da84cd30

Patch
Kernel Git
https://git.kernel.org/stable/c/54d564b762389679e2f8fb9eeb20af7e82371e1c

Patch
Kernel Git
https://git.kernel.org/stable/c/5cd0707b81cb4589f00aec5c4c1288bd0980d2a4

Patch
Kernel Git
https://git.kernel.org/stable/c/6136bbb054f7ab9f51ae99915541633b18bcef90

Patch

Showing 5 of 7 references View all on NVD

Details

CVE ID CVE-2026-53023

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-06-24

Modified 2026-07-15

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-53023?

CVE-2026-53023 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.15 onward and has been patched in 5.15.209, 6.1.175, 6.6.141 and others. CVE-2026-53023 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-53023?

CVE-2026-53023 has a CVSS score of 5.5 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
Is there a patch available for CVE-2026-53023?

Yes. CVE-2026-53023 has been patched. Fixed versions include 5.15.209, 6.1.175, 6.6.141 and others. If you are running Linux kernel 5.15 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-53023 actively exploited?

No. CVE-2026-53023 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.