What is CVE-2023-53519?

CVE-2023-53519 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a Improper Locking flaw (CWE-667), affecting Linux kernel versions from 2.6.39 onward and patched in 4.14.324, 4.19.293, 5.4.255 and others. CVE-2023-53519 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-53519?

CVE-2023-53519 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-2023-53519?

Yes, CVE-2023-53519 has been patched. Fixed versions include 4.14.324, 4.19.293, 5.4.255 and others. If you are running Linux kernel 2.6.39 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-53519 actively exploited?

CVE-2023-53519 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Improper Locking (CWE-667)?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/667.html

CVE-2023-53519

Medium

In the Linux kernel, the following vulnerability has been resolved: media: v4l2-mem2mem: add lock to protect parameter num_rdy Getting below error when using KCSAN to check the driver. Adding lock to protect parameter num_rdy when getting the value with function: v4l2_m2m_num_src_bufs_ready/v4l2_m2m_num_dst_bufs_ready. kworker/u16:3: [name:report&]BUG: KCSAN: data-race in v4l2_m2m_buf_queue kworker/u16:3: [name:report&] kworker/u16:3: [name:report&]read-write to 0xffffff8105f35b94 of 1 bytes by task 20865 on cpu 7: kworker/u16:3: v4l2_m2m_buf_queue+0xd8/0x10c

Package Linux Kernel

Published 2025-10-01

Last modified 2026-04-06

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-667

CVE-2023-53519 is a Improper Locking vulnerability

What is Improper Locking?

The product does not properly acquire or release a lock, which can lead to unexpected behaviour. Learn more on MITRE CWE

Affected versions

Linux kernel versions 2.6.39 and later are affected. Fixed in 4.14.324, 4.19.293, 5.4.255, 5.10.192, 5.15.128, 6.1.47, 6.4.12, 6.5 and their respective stable series.

Affected from

≥ 2.6.39

Fixed in

✓ 4.14.324 4.14.x ✓ 4.19.293 4.19.x ✓ 5.4.255 5.4.x ✓ 5.10.192 5.10.x ✓ 5.15.128 5.15.x ✓ 6.1.47 6.1.x ✓ 6.4.12 6.4.x ✓ 6.5

References

8 total

Kernel Git
https://git.kernel.org/stable/c/1676748aa29099fc0abd71e0fb092e76e835f25c

Patch
Kernel Git
https://git.kernel.org/stable/c/56b5c3e67b0f9af3f45cf393be048ee8d8a92694

Patch
Kernel Git
https://git.kernel.org/stable/c/690dd4780b3f4d755e4e7883e8c3d1b5052f6bf2

Patch
Kernel Git
https://git.kernel.org/stable/c/7fc7f87725805197388ba749a1801df33000fa50

Patch
Kernel Git
https://git.kernel.org/stable/c/c71aa5f1cf961264690f2560503ea396b6e3c680

Patch

Showing 5 of 8 references View all on NVD

Details

CVE ID CVE-2023-53519

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2025-10-01

Modified 2026-04-06

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-53519?

CVE-2023-53519 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as an Improper Locking flaw (CWE-667) . It affects Linux kernel versions from 2.6.39 onward and has been patched in 4.14.324, 4.19.293, 5.4.255 and others. CVE-2023-53519 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-53519?

CVE-2023-53519 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-2023-53519?

Yes. CVE-2023-53519 has been patched. Fixed versions include 4.14.324, 4.19.293, 5.4.255 and others. If you are running Linux kernel 2.6.39 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-53519 actively exploited?

No. CVE-2023-53519 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.