#VU92063 NULL pointer dereference in Linux kernel - CVE-2023-52736

Vulnerability identifier: #VU92063

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-52736

CWE-ID: CWE-476

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 perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the snd_hda_codec_cleanup_for_unbind() function in sound/pci/hda/hda_codec.c, within the hda_codec_driver_probe() and hda_codec_driver_remove() functions in sound/pci/hda/hda_bind.c. A local user can perform a denial of service (DoS) attack.

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/7fc4e7191eae9d9325511e03deadfdb2224914f8
https://git.kernel.org/stable/c/e909f5f2aa55a8f9aa6919cce08015cb0e8d4668
https://git.kernel.org/stable/c/427ca2530da8dc61a42620d7113b05e187b6c2c0
https://git.kernel.org/stable/c/87978e6ad45a16835cc58234451111091be3c59a

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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.