What is CVE-2026-46174?

CVE-2026-46174 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10, affecting Linux kernel versions from 3.16.58 onward and patched in 5.10.256, 5.15.207, 6.1.173 and others. CVE-2026-46174 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-46174?

CVE-2026-46174 has a CVSS score of 8.8 out of 10, rated High severity. The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Is there a patch available for CVE-2026-46174?

Yes, CVE-2026-46174 has been patched. Fixed versions include 5.10.256, 5.15.207, 6.1.173 and others. If you are running Linux kernel 3.16.58 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-46174 actively exploited?

CVE-2026-46174 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-46174

High

In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Prevent improper isolation of shared resources in Zen2's op cache Make sure resources are not improperly shared in the op cache and cause instruction corruption this way.

Package Linux Kernel

Published 2026-05-28

Last modified 2026-05-30

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

8.8

out of 10

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Vector string

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

Affected versions

Linux kernel versions 3.16.58, 4.4.144, 4.9.102, 4.14 and later are affected. Fixed in 5.10.256, 5.15.207, 6.1.173, 6.6.139, 6.12.88, 6.18.30, 7.0.7, 7.1-rc4 and their respective stable series.

Affected from

≥ 3.16.58 ≥ 4.4.144 ≥ 4.9.102 ≥ 4.14

Fixed in

✓ 5.10.256 5.10.x ✓ 5.15.207 5.15.x ✓ 6.1.173 6.1.x ✓ 6.6.139 6.6.x ✓ 6.12.88 6.12.x ✓ 6.18.30 6.18.x ✓ 7.0.7 7.0.x ✓ 7.1-rc4

References

The following references provide additional information about CVE-2026-46174 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/1cd85a19748b2407830376a5cbae5c0f126016e5
Patch
Kernel patch commit
https://git.kernel.org/stable/c/1e23b30a80b14e5764657401ee2cca030525ae8e
Patch
Kernel patch commit
https://git.kernel.org/stable/c/251497955f2314cd39d43191e81c6151dead4c7b
Patch

8 patch commits total View all on NVD

Details

CVE ID CVE-2026-46174

Severity High

CVSS score 8.8 / 10

CVSS version 3.1

Published 2026-05-28

Modified 2026-05-30

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-46174?

CVE-2026-46174 is a High severity Linux kernel vulnerability with a CVSS score of 8.8 out of 10 . It affects Linux kernel versions from 3.16.58 onward and has been patched in 5.10.256, 5.15.207, 6.1.173 and others. CVE-2026-46174 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-46174?

CVE-2026-46174 has a CVSS score of 8.8 out of 10, rated High severity (CVSS 3.1). The vector string is CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Is there a patch available for CVE-2026-46174?

Yes — CVE-2026-46174 has been patched. Fixed versions include 5.10.256, 5.15.207, 6.1.173 and others. If you are running Linux kernel 3.16.58 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-46174 actively exploited?

No — CVE-2026-46174 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.