SB2016080209 - Input validation error in Xen
Published: August 2, 2016 Updated: July 28, 2020
Security Bulletin ID
SB2016080209
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: CVE-2016-6259)
The vulnerability allows a local non-authenticated attacker to perform a denial of service (DoS) attack.
Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention (SMAP) whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service (hypervisor and VM crash) by triggering a safety check.
Remediation
Install update from vendor's website.