#VU90074 Use-after-free in Linux kernel - CVE-2023-52776

Vulnerability identifier: #VU90074

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-52776

CWE-ID: CWE-416

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within the ath12k_wmi_pdev_dfs_radar_detected_event() and ath12k_wmi_pdev_temperature_event() functions in drivers/net/wireless/ath/ath12k/wmi.c. A local user can escalate privileges on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

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External links
https://git.kernel.org/stable/c/774de37c147fea81f2c2e4be5082304f4f71d535
https://git.kernel.org/stable/c/d7a5f7f76568e48869916d769e28b9f3ca70c78e
https://git.kernel.org/stable/c/69bd216e049349886405b1c87a55dce3d35d1ba7

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.