What is CVE-2026-23264?

CVE-2026-23264 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 5.15.54 onward and patched in 6.1.163, 6.6.124, 6.12.70 and others. CVE-2026-23264 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-23264?

CVE-2026-23264 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-2026-23264?

Yes, CVE-2026-23264 has been patched. Fixed versions include 6.1.163, 6.6.124, 6.12.70 and others. If you are running Linux kernel 5.15.54 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-23264 actively exploited?

CVE-2026-23264 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-23264

Medium

In the Linux kernel, the following vulnerability has been resolved: Revert "drm/amd: Check if ASPM is enabled from PCIe subsystem" This reverts commit 7294863a6f01248d72b61d38478978d638641bee. This commit was erroneously applied again after commit 0ab5d711ec74 ("drm/amd: Refactor `amdgpu_aspm` to be evaluated per device") removed it, leading to very hard to debug crashes, when used with a system with two AMD GPUs of which only one supports ASPM. (cherry picked from commit 97a9689300eb2b393ba5efc17c8e5db835917080)

Package Linux Kernel

Published 2026-03-18

Last modified 2026-05-29

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 5.15.54, 5.18 and later are affected. Fixed in 6.1.163, 6.6.124, 6.12.70, 6.18.10, 6.19 and their respective stable series.

Affected from

≥ 5.15.54 ≥ 5.18

Fixed in

✓ 6.1.163 6.1.x ✓ 6.6.124 6.6.x ✓ 6.12.70 6.12.x ✓ 6.18.10 6.18.x ✓ 6.19

References

The following references provide additional information about CVE-2026-23264 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/243b467dea1735fed904c2e54d248a46fa417a2d
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5b794951541e84d2968980a68dd1ac38420f75f3
Patch
Kernel patch commit
https://git.kernel.org/stable/c/5f645222eb30c91135119e12eccfd1b8ea88140e
Patch

5 patch commits total View all on NVD

Details

CVE ID CVE-2026-23264

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-03-18

Modified 2026-05-29

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-23264?

CVE-2026-23264 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 5.15.54 onward and has been patched in 6.1.163, 6.6.124, 6.12.70 and others. CVE-2026-23264 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-23264?

CVE-2026-23264 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-2026-23264?

Yes — CVE-2026-23264 has been patched. Fixed versions include 6.1.163, 6.6.124, 6.12.70 and others. If you are running Linux kernel 5.15.54 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-23264 actively exploited?

No — CVE-2026-23264 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.