What is CVE-2023-52776?

CVE-2023-52776 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.9 out of 10, classified as a Use After Free flaw (CWE-416), affecting Linux kernel versions from 6.3 onward and patched in 6.5.13, 6.6.3 and 6.7. CVE-2023-52776 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is the CVSS score for CVE-2023-52776?

CVE-2023-52776 has a CVSS score of 5.9 out of 10, rated Medium severity. The vector string is CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.

Is there a patch available for CVE-2023-52776?

Yes, CVE-2023-52776 has been patched. Fixed versions include 6.5.13, 6.6.3 and 6.7. If you are running Linux kernel 6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.

Is CVE-2023-52776 actively exploited?

CVE-2023-52776 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.

What is Use After Free (CWE-416)?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. See MITRE CWE for full details: https://cwe.mitre.org/data/definitions/416.html

CVE-2023-52776

Medium

In the Linux kernel, the following vulnerability has been resolved: wifi: ath12k: fix dfs-radar and temperature event locking The ath12k active pdevs are protected by RCU but the DFS-radar and temperature event handling code calling ath12k_mac_get_ar_by_pdev_id() was not marked as a read-side critical section. Mark the code in question as RCU read-side critical sections to avoid any potential use-after-free issues. Note that the temperature event handler looks like a place holder currently but would still trigger an RCU lockdep splat. Compile tested only.

Package Linux Kernel

Published 2024-05-21

Last modified 2025-04-02

CVSS version 3.1

Patch available

Yes

CVSS 3.1 score

5.9

out of 10

Medium

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Vector string

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Weakness type

CWE-416

CVE-2023-52776 is a Use After Free vulnerability

What is Use After Free?

The product references memory after it has been freed, which may cause it to crash, use unexpected values, or execute code. Learn more on MITRE CWE

Affected versions

Linux kernel versions 6.3 and later are affected. Fixed in 6.5.13, 6.6.3, 6.7 and their respective stable series.

Affected from

≥ 6.3

Fixed in

✓ 6.5.13 6.5.x ✓ 6.6.3 6.6.x ✓ 6.7

References

3 total

Kernel Git
https://git.kernel.org/stable/c/69bd216e049349886405b1c87a55dce3d35d1ba7

Patch
Kernel Git
https://git.kernel.org/stable/c/774de37c147fea81f2c2e4be5082304f4f71d535

Patch
Kernel Git
https://git.kernel.org/stable/c/d7a5f7f76568e48869916d769e28b9f3ca70c78e

Patch

Details

CVE ID CVE-2023-52776

Severity Medium

CVSS score 5.9 / 10

CVSS version 3.1

Published 2024-05-21

Modified 2025-04-02

KEV No

Patch

Yes

Package linux

Frequently asked questions

What is CVE-2023-52776?

CVE-2023-52776 is a Medium severity Linux kernel vulnerability with a CVSS score of 5.9 out of 10 , classified as an Use After Free flaw (CWE-416) . It affects Linux kernel versions from 6.3 onward and has been patched in 6.5.13, 6.6.3 and 6.7. CVE-2023-52776 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
What is the CVSS score for CVE-2023-52776?

CVE-2023-52776 has a CVSS score of 5.9 out of 10, rated Medium severity (CVSS 3.1). The vector string is CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N.
Is there a patch available for CVE-2023-52776?

Yes. CVE-2023-52776 has been patched. Fixed versions include 6.5.13, 6.6.3 and 6.7. If you are running Linux kernel 6.3 or later up to the fix versions, apply the relevant patch for your kernel branch.
Is CVE-2023-52776 actively exploited?

No. CVE-2023-52776 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.