What is CVE-2026-31564?

CVE-2026-31564 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.19 onward and patched in 6.19.11 and 7.0. CVE-2026-31564 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-31564?

CVE-2026-31564 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-2026-31564?

Yes, CVE-2026-31564 has been patched. Fixed versions include 6.19.11 and 7.0. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-31564 actively exploited?

CVE-2026-31564 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-31564

Medium

In the Linux kernel, the following vulnerability has been resolved: LoongArch: KVM: Fix base address calculation in kvm_eiointc_regs_access() In function kvm_eiointc_regs_access(), the register base address is caculated from array base address plus offset, the offset is absolute value from the base address. The data type of array base address is u64, it should be converted into the "void *" type and then plus the offset.

Package Linux Kernel

Published 2026-04-24

Last modified 2026-04-27

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 6.19 and later are affected. Fixed in 6.19.11, 7.0 and their respective stable series.

Affected from

≥ 6.19

Fixed in

✓ 6.19.11 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-31564 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/6bcfb7f46d667b04bd1a1169ccedf5fb699c60df
Patch
Kernel patch commit
https://git.kernel.org/stable/c/c4f0a9481cf0dd7c71a07484bc98f2570fdb3a82
Patch

Details

CVE ID CVE-2026-31564

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2026-04-24

Modified 2026-04-27

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2026-31564?

CVE-2026-31564 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.19 onward and has been patched in 6.19.11 and 7.0. CVE-2026-31564 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-31564?

CVE-2026-31564 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-2026-31564?

Yes — CVE-2026-31564 has been patched. Fixed versions include 6.19.11 and 7.0. If you are running Linux kernel 6.19 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-31564 actively exploited?

No — CVE-2026-31564 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.