SB2023101183 - Privilege escalation in Linux kernel btrfs filesystem
Published: October 11, 2023
Security Bulletin ID
SB2023101183
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-2023-4389)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the btrfs_get_root_ref() function in fs/btrfs/disk-io.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.