What is CVE-2023-53299?

CVE-2023-53299 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 3.3 onward and patched in 4.14.315, 4.19.283, 5.4.243 and others. CVE-2023-53299 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53299?

CVE-2023-53299 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-2023-53299?

Yes, CVE-2023-53299 has been patched. Fixed versions include 4.14.315, 4.19.283, 5.4.243 and others. If you are running Linux kernel 3.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53299 actively exploited?

CVE-2023-53299 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-2023-53299

Medium

In the Linux kernel, the following vulnerability has been resolved: md/raid10: fix leak of 'r10bio->remaining' for recovery raid10_sync_request() will add 'r10bio->remaining' for both rdev and replacement rdev. However, if the read io fails, recovery_request_write() returns without issuing the write io, in this case, end_sync_request() is only called once and 'remaining' is leaked, cause an io hang. Fix the problem by decreasing 'remaining' according to if 'bio' and 'repl_bio' is valid.

Package Linux Kernel

Published 2025-09-16

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-2023-53299 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 3.3 and later are affected. Fixed in 4.14.315, 4.19.283, 5.4.243, 5.10.180, 5.15.111, 6.1.28, 6.2.15, 6.3.2, 6.4 and their respective stable series.

Affected from

≥ 3.3

Fixed in

✓ 4.14.315 4.14.x ✓ 4.19.283 4.19.x ✓ 5.4.243 5.4.x ✓ 5.10.180 5.10.x ✓ 5.15.111 5.15.x ✓ 6.1.28 6.1.x ✓ 6.2.15 6.2.x ✓ 6.3.2 6.3.x ✓ 6.4

References

9 total

Kernel Git
https://git.kernel.org/stable/c/11141630f03efffdfe260b3582b2d93d38171b97

Patch
Kernel Git
https://git.kernel.org/stable/c/1697fb124c6d6c5237e9cbd78890310154738084

Patch
Kernel Git
https://git.kernel.org/stable/c/1d2c6c6e37fe5de11fd01a82badf03390e12df7a

Patch
Kernel Git
https://git.kernel.org/stable/c/26208a7cffd0c7cbf14237ccd20c7270b3ffeb7e

Patch
Kernel Git
https://git.kernel.org/stable/c/3481dec5ecbbbbe44ab23e22c2b14bd65c644ec6

Patch

Showing 5 of 9 references View all on NVD

Details

CVE ID CVE-2023-53299

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-09-16

Modified 2026-01-14

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53299?

CVE-2023-53299 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 3.3 onward and has been patched in 4.14.315, 4.19.283, 5.4.243 and others. CVE-2023-53299 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53299?

CVE-2023-53299 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-2023-53299?

Yes. CVE-2023-53299 has been patched. Fixed versions include 4.14.315, 4.19.283, 5.4.243 and others. If you are running Linux kernel 3.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53299 actively exploited?

No. CVE-2023-53299 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.