SB2023040653 - Information disclosure in Linux kernel OverlayFS
Published: April 6, 2023
Security Bulletin ID
SB2023040653
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-3732)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists in the way the user mounts the TmpFS filesystem with OverlayFS. A local user can gain access to hidden files that should not be accessible.
Remediation
Install update from vendor's website.