What is CVE-2023-53355?

CVE-2023-53355 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Memory Leak flaw (CWE-401), affecting Linux kernel versions from 4.14 onward and patched in 6.1.18, 6.2.5 and 6.3. CVE-2023-53355 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53355?

CVE-2023-53355 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-2023-53355?

Yes, CVE-2023-53355 has been patched. Fixed versions include 6.1.18, 6.2.5 and 6.3. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53355 actively exploited?

CVE-2023-53355 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/401.html

CVE-2023-53355

Medium

In the Linux kernel, the following vulnerability has been resolved: staging: pi433: fix memory leak with using debugfs_lookup() When calling debugfs_lookup() the result must have dput() called on it, otherwise the memory will leak over time. To make things simpler, just call debugfs_lookup_and_remove() instead which handles all of the logic at once. This requires saving off the root directory dentry to make creation of individual device subdirectories easier.

Package Linux Kernel

Published 2025-09-17

Last modified 2026-01-14

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-401

CVE-2023-53355 is a Memory Leak vulnerability

What is Memory Leak?

The product does not release memory after use, causing gradual resource exhaustion. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.14 and later are affected. Fixed in 6.1.18, 6.2.5, 6.3 and their respective stable series.

Affected from

≥ 4.14

Fixed in

✓ 6.1.18 6.1.x ✓ 6.2.5 6.2.x ✓ 6.3

References

The following references provide additional information about CVE-2023-53355 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/04f3cda40e9f6653ae15ed3fcf26ef2860f4df66
Patch
Kernel patch commit
https://git.kernel.org/stable/c/2f36e789e540df6a9fbf471b3a2ba62a8b361586
Patch
Kernel patch commit
https://git.kernel.org/stable/c/bb16f3102607b69e1a0233f4b73c6e337f86ef8d
Patch

Details

CVE ID CVE-2023-53355

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-09-17

Modified 2026-01-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53355?

CVE-2023-53355 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a Memory Leak flaw (CWE-401) . It affects Linux kernel versions from 4.14 onward and has been patched in 6.1.18, 6.2.5 and 6.3. CVE-2023-53355 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53355?

CVE-2023-53355 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-2023-53355?

Yes — CVE-2023-53355 has been patched. Fixed versions include 6.1.18, 6.2.5 and 6.3. If you are running Linux kernel 4.14 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53355 actively exploited?

No — CVE-2023-53355 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
What is Memory Leak (CWE-401)?

The product does not release memory after use, causing gradual resource exhaustion. View CWE-401 on MITRE CWE →