What is CVE-2026-31653?

CVE-2026-31653 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.17 onward and patched in 6.18.23, 6.19.13 and 7.0. CVE-2026-31653 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2026-31653?

CVE-2026-31653 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-2026-31653?

Yes, CVE-2026-31653 has been patched. Fixed versions include 6.18.23, 6.19.13 and 7.0. If you are running Linux kernel 6.17 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2026-31653 actively exploited?

CVE-2026-31653 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2026-31653

Medium

In the Linux kernel, the following vulnerability has been resolved: mm/damon/sysfs: dealloc repeat_call_control if damon_call() fails damon_call() for repeat_call_control of DAMON_SYSFS could fail if somehow the kdamond is stopped before the damon_call(). It could happen, for example, when te damon context was made for monitroing of a virtual address processes, and the process is terminated immediately, before the damon_call() invocation. In the case, the dyanmically allocated repeat_call_control is not deallocated and leaked. Fix the leak by deallocating the repeat_call_control under the damon_call() failure. This issue is discovered by sashiko [1].

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 6.17 and later are affected. Fixed in 6.18.23, 6.19.13, 7.0 and their respective stable series.

Affected from

≥ 6.17

Fixed in

✓ 6.18.23 6.18.x ✓ 6.19.13 6.19.x ✓ 7.0

References

The following references provide additional information about CVE-2026-31653 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/0199390a6b92fc21860e1b858abf525c7e73b956
Patch
Kernel patch commit
https://git.kernel.org/stable/c/0655f5cf1735508394ef8af98ddcfab3ac1c1cc5
Patch
Kernel patch commit
https://git.kernel.org/stable/c/b9dadf026a9fb681ed32a0646adc10ab485bf3b1
Patch

Details

CVE ID CVE-2026-31653

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-2026-31653?

CVE-2026-31653 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.17 onward and has been patched in 6.18.23, 6.19.13 and 7.0. CVE-2026-31653 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2026-31653?

CVE-2026-31653 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-2026-31653?

Yes — CVE-2026-31653 has been patched. Fixed versions include 6.18.23, 6.19.13 and 7.0. If you are running Linux kernel 6.17 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2026-31653 actively exploited?

No — CVE-2026-31653 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.