#VU91678 Use of uninitialized resource in Linux kernel - CVE-2023-52693

Vulnerability identifier: #VU91678

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-2023-52693

CWE-ID: CWE-908

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 use of uninitialized resource within the acpi_video_dev_register_backlight() function in drivers/acpi/acpi_video.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/556f02699d33c1f40b1b31bd25828ce08fa165d8
https://git.kernel.org/stable/c/1e3a2b9b4039bb4d136dca59fb31e06465e056f3
https://git.kernel.org/stable/c/c4e1a0ef0b4782854c9b77a333ca912b392bed2f
https://git.kernel.org/stable/c/3a370502a5681986f9828e43be75ce26c6ab24af
https://git.kernel.org/stable/c/2124c5bc22948fc4d09a23db4a8acdccc7d21e95
https://git.kernel.org/stable/c/39af144b6d01d9b40f52e5d773e653957e6c379c
https://git.kernel.org/stable/c/72884ce4e10417b1233b614bf134da852df0f15f
https://git.kernel.org/stable/c/ccd45faf4973746c4f30ea41eec864e5cf191099

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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.