What is CVE-2023-53555?

CVE-2023-53555 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, affecting Linux kernel versions from 6.3 onward and patched in 6.4.11 and 6.5. CVE-2023-53555 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53555?

CVE-2023-53555 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-2023-53555?

Yes, CVE-2023-53555 has been patched. Fixed versions include 6.4.11 and 6.5. If you are running Linux kernel 6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53555 actively exploited?

CVE-2023-53555 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

CVE-2023-53555

Medium

In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: initialize damo_filter->list from damos_new_filter() damos_new_filter() is not initializing the list field of newly allocated filter object. However, DAMON sysfs interface and DAMON_RECLAIM are not initializing it after calling damos_new_filter(). As a result, accessing uninitialized memory is possible. Actually, adding multiple DAMOS filters via DAMON sysfs interface caused NULL pointer dereferencing. Initialize the field just after the allocation from damos_new_filter().

Package Linux Kernel

Published 2025-10-04

Last modified 2026-03-23

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-908

CVE-2023-53555 is classified as CWE-908

See CWE-908 on MITRE CWE for full details on this weakness type.

Affected versions

Linux kernel versions 6.3 and later are affected. Fixed in 6.4.11, 6.5 and their respective stable series.

Affected from

≥ 6.3

Fixed in

✓ 6.4.11 6.4.x ✓ 6.5

References

The following references provide additional information about CVE-2023-53555 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/5f1fc67f2cb8d3035d3acd273b48b97835af8afd
Patch
Kernel patch commit
https://git.kernel.org/stable/c/da7beebb49c643cd03c54447ed66595936a7a1ce
Patch

Details

CVE ID CVE-2023-53555

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-10-04

Modified 2026-03-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53555?

CVE-2023-53555 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 . It affects Linux kernel versions from 6.3 onward and has been patched in 6.4.11 and 6.5. CVE-2023-53555 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53555?

CVE-2023-53555 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-2023-53555?

Yes — CVE-2023-53555 has been patched. Fixed versions include 6.4.11 and 6.5. If you are running Linux kernel 6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53555 actively exploited?

No — CVE-2023-53555 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.