SB2023081418 - Privilege escalation in Linux kernel Sunxi-Cedrus driver
Published: August 14, 2023
Security Bulletin ID
SB2023081418
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-2023-35826)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the cedrus_remove() function in drivers/staging/media/sunxi/cedrus/cedrus.c. A local user can trigger a use-after-free error and execute arbitrary code on the system.
Remediation
Install update from vendor's website.
References
- https://lore.kernel.org/linux-arm-kernel/20230308032333.1893394-1-zyytlz.wz@163.com/T/
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=50d0a7aea4809cef87979d4669911276aa23b71f
- 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
- https://security.netapp.com/advisory/ntap-20230803-0002/