What is CVE-2023-53371?

CVE-2023-53371 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 5.13 onward and patched in 6.1.40, 6.4.5 and 6.5. CVE-2023-53371 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53371?

CVE-2023-53371 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-2023-53371?

Yes, CVE-2023-53371 has been patched. Fixed versions include 6.1.40, 6.4.5 and 6.5. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53371 actively exploited?

CVE-2023-53371 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-2023-53371

Medium

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: fix memory leak in mlx5e_fs_tt_redirect_any_create The memory pointed to by the fs->any pointer is not freed in the error path of mlx5e_fs_tt_redirect_any_create, which can lead to a memory leak. Fix by freeing the memory in the error path, thereby making the error path identical to mlx5e_fs_tt_redirect_any_destroy().

Package Linux Kernel

Published 2025-09-18

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-2023-53371 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 5.13 and later are affected. Fixed in 6.1.40, 6.4.5, 6.5 and their respective stable series.

Affected from

≥ 5.13

Fixed in

✓ 6.1.40 6.1.x ✓ 6.4.5 6.4.x ✓ 6.5

References

The following references provide additional information about CVE-2023-53371 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/3250affdc658557a41df9c5fb567723e421f8bf2
Patch
Kernel patch commit
https://git.kernel.org/stable/c/75df2fe6d160e16be880aacacd521b135d7177c9
Patch
Kernel patch commit
https://git.kernel.org/stable/c/8a75a6f169c3df3a94802314aa61282772ac75b8
Patch

Details

CVE ID CVE-2023-53371

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-09-18

Modified 2026-01-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53371?

CVE-2023-53371 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 5.13 onward and has been patched in 6.1.40, 6.4.5 and 6.5. CVE-2023-53371 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53371?

CVE-2023-53371 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-2023-53371?

Yes — CVE-2023-53371 has been patched. Fixed versions include 6.1.40, 6.4.5 and 6.5. If you are running Linux kernel 5.13 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53371 actively exploited?

No — CVE-2023-53371 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 →