SB2018112613 - Security restrictions bypass in Linux Kernel
Published: November 26, 2018
Security Bulletin ID
SB2018112613
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Security restrictions bypass (CVE-ID: CVE-2018-16862)
The vulnerability allows a local attacker to bypass security restrictions on the target system.
The vulnerability exists due to an error when the cleancache subsystem clears an inode after the final file truncation (removal). A local attacker can supply new file created with the same inode that may contain leftover pages from cleancache and bypass security restrictions to conduct further attacks.
Remediation
Install update from vendor's website.