SB2023071430 - Privilege escalation in Linux kernel rkvdec driver
Published: July 14, 2023
Security Bulletin ID
SB2023071430
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2023-35829)
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.
Remediation
Install update from vendor's website.
References
- 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