SB20230516116 - Privilege escalation in Linux kernel NTFS
Published: May 16, 2023
Security Bulletin ID
SB20230516116
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-2023-26544)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the run_unpack() function in fs/ntfs3/run.c, related to a difference between NTFS sector size and media sector size. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.