#VU78264 Use-after-free in Linux kernel - CVE-2023-35829

Vulnerability identifier: #VU78264

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-2023-35829

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 rkvdec_remove() function in drivers/staging/media/rkvdec/rkvdec.c. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 6.3.2

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External links
https://lore.kernel.org/lkml/20230307173900.1299387-1-zyytlz.wz@163.com/T/
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=3228cec23b8b29215e18090c6ba635840190993d
https://lore.kernel.org/all/a4dafa22-3ee3-dbe1-fd50-fee07883ce1a@xs4all.nl/
https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2

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Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?