What is CVE-2023-53258?

CVE-2023-53258 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.0 onward and patched in 6.1.43, 6.4.8 and 6.5. CVE-2023-53258 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53258?

CVE-2023-53258 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-2023-53258?

Yes, CVE-2023-53258 has been patched. Fixed versions include 6.1.43, 6.4.8 and 6.5. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53258 actively exploited?

CVE-2023-53258 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53258

Medium

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix possible underflow for displays with large vblank [Why] Underflow observed when using a display with a large vblank region and low refresh rate [How] Simplify calculation of vblank_nom Increase value for VBlankNomDefaultUS to 800us

Package Linux Kernel

Published 2025-09-15

Last modified 2026-01-14

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

Weakness type

CWE-191

CVE-2023-53258 is classified as CWE-191

See CWE-191 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.0 and later are affected. Fixed in 6.1.43, 6.4.8, 6.5 and their respective stable series.

Affected from

≥ 6.0

Fixed in

✓ 6.1.43 6.1.x ✓ 6.4.8 6.4.x ✓ 6.5

References

The following references provide additional information about CVE-2023-53258 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.

Kernel patch commit
https://git.kernel.org/stable/c/1a4bcdbea4319efeb26cc4b05be859a7867e02dc
Patch
Kernel patch commit
https://git.kernel.org/stable/c/64bc8e10c87adf60b2d32aacf3afb288e51d5a62
Patch
Kernel patch commit
https://git.kernel.org/stable/c/d5741133e6e2f304b40ca1da0e16f62af06f4d22
Patch

Details

CVE ID CVE-2023-53258

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-09-15

Modified 2026-01-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53258?

CVE-2023-53258 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.0 onward and has been patched in 6.1.43, 6.4.8 and 6.5. CVE-2023-53258 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53258?

CVE-2023-53258 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-2023-53258?

Yes — CVE-2023-53258 has been patched. Fixed versions include 6.1.43, 6.4.8 and 6.5. If you are running Linux kernel 6.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53258 actively exploited?

No — CVE-2023-53258 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.