SB2023070443 - Privilege escalation in Linux kernel saa7134 driver
Published: July 4, 2023
Security Bulletin ID
SB2023070443
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) Race condition (CVE-ID: CVE-2023-35823)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition within the saa7134_finidev() function in drivers/media/pci/saa7134/saa7134-core.c. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://lore.kernel.org/all/49bb0b6a-e669-d4e7-d742-a19d2763e947@xs4all.nl/
- https://lore.kernel.org/lkml/20230318085023.832510-1-zyytlz.wz@163.com/t/
- https://cdn.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.3.2
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=30cf57da176cca80f11df0d9b7f71581fe601389