Linux Kernel up to 6.5.12/6.6.2 ath12k_mac_get_ar_by_pdev_id use after free

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel up to 6.5.12/6.6.2. This affects the function ath12k_mac_get_ar_by_pdev_id. Performing a manipulation results in use after free. This vulnerability is identified as CVE-2023-52776. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 6.5.12/6.6.2. This affects the function ath12k_mac_get_ar_by_pdev_id. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. The impact remains unknown. The summary by CVE is:

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.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2023-52776. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/08/2026).

Upgrading to version 6.5.13 or 6.6.3 eliminates this vulnerability. Applying the patch 774de37c147f/d7a5f7f76568/69bd216e0493 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector: 🔍

ADP CISA Base Score: 5.9
ADP CISA Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Kernel 6.5.13/6.6.3
Patch: 774de37c147f/d7a5f7f76568/69bd216e0493

Timelineinfo

05/21/2024 🔍
05/21/2024 +0 days 🔍
08/08/2026 +809 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: git.kernel.org
Status: Confirmed

CVE: CVE-2023-52776 (🔍)
GCVE (CVE): GCVE-0-2023-52776
GCVE (VulDB): GCVE-100-265581

Entryinfo

Created: 05/21/2024 18:50
Updated: 08/08/2026 04:06
Changes: 05/21/2024 18:50 (55), 10/31/2024 19:34 (13), 08/08/2026 04:06 (18)
Complete: 🔍
Cache ID: 216::103

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