SB2016112812 - Security restrictions bypass in Linux kernel
Published: November 28, 2016 Updated: January 15, 2025
Security Bulletin ID
SB2016112812
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) Security restrictions bypass (CVE-ID: CVE-2015-1328)
The vulnerability allows a local user to execute arbitrary code.
The overlayfs implementation in the linux (aka Linux kernel) package before 3.19.0-21.21 in Ubuntu through 15.04 does not properly check permissions for file creation in the upper filesystem directory, which allows local users to obtain root access by leveraging a configuration in which overlayfs is permitted in an arbitrary mount namespace.
Remediation
Install update from vendor's website.