What is CVE-2023-52736?

CVE-2023-52736 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10, classified as a NULL Pointer Dereference flaw (CWE-476), affecting Linux kernel versions from 4.1 onward and patched in 5.10.169, 5.15.95, 6.1.13 and others. CVE-2023-52736 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52736?

CVE-2023-52736 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-2023-52736?

Yes, CVE-2023-52736 has been patched. Fixed versions include 5.10.169, 5.15.95, 6.1.13 and others. If you are running Linux kernel 4.1 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52736 actively exploited?

CVE-2023-52736 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is NULL Pointer Dereference (CWE-476)?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/476.html

CVE-2023-52736

Medium

In the Linux kernel, the following vulnerability has been resolved: ALSA: hda: Do not unset preset when cleaning up codec Several functions that take part in codec's initialization and removal are re-used by ASoC codec drivers implementations. Drivers mimic the behavior of hda_codec_driver_probe/remove() found in sound/pci/hda/hda_bind.c with their component->probe/remove() instead. One of the reasons for that is the expectation of snd_hda_codec_device_new() to receive a valid pointer to an instance of struct snd_card. This expectation can be met only once sound card components probing commences. As ASoC sound card may be unbound without codec device being actually removed from the system, unsetting ->preset in snd_hda_codec_cleanup_for_unbind() interferes with module unload -> load scenario causing null-ptr-deref. Preset is assigned only once, during device/driver matching whereas ASoC codec driver's module reloading may occur several times throughout the lifetime of an audio stack.

Package Linux Kernel

Published 2024-05-21

Last modified 2025-09-23

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-476

CVE-2023-52736 is a NULL Pointer Dereference vulnerability

What is NULL Pointer Dereference?

The product dereferences a pointer that it expects to be valid but is NULL, typically causing a crash. Learn more on MITRE CWE

Affected versions

Linux kernel versions 4.1 and later are affected. Fixed in 5.10.169, 5.15.95, 6.1.13, 6.2 and their respective stable series.

Affected from

≥ 4.1

Fixed in

✓ 5.10.169 5.10.x ✓ 5.15.95 5.15.x ✓ 6.1.13 6.1.x ✓ 6.2

References

4 total

Kernel Git
https://git.kernel.org/stable/c/427ca2530da8dc61a42620d7113b05e187b6c2c0

Patch
Kernel Git
https://git.kernel.org/stable/c/7fc4e7191eae9d9325511e03deadfdb2224914f8

Patch
Kernel Git
https://git.kernel.org/stable/c/87978e6ad45a16835cc58234451111091be3c59a

Patch
Kernel Git
https://git.kernel.org/stable/c/e909f5f2aa55a8f9aa6919cce08015cb0e8d4668

Patch

Details

CVE ID CVE-2023-52736

Severity Medium

CVSS score 5.5 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2025-09-23

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52736?

CVE-2023-52736 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.5 out of 10 , classified as a NULL Pointer Dereference flaw (CWE-476) . It affects Linux kernel versions from 4.1 onward and has been patched in 5.10.169, 5.15.95, 6.1.13 and others. CVE-2023-52736 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52736?

CVE-2023-52736 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-2023-52736?

Yes. CVE-2023-52736 has been patched. Fixed versions include 5.10.169, 5.15.95, 6.1.13 and others. If you are running Linux kernel 4.1 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52736 actively exploited?

No. CVE-2023-52736 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.