SB2020040418 - Resource management error in xen (Alpine package)
Published: April 4, 2020
Security Bulletin ID
SB2020040418
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Resource management error (CVE-ID: CVE-2019-17348)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient TLB flushing when using PCID on 64-bit x86 PV guest systems. A local user with access to guest operating system can use a specially crafted program to crash the Xen host.
Remediation
Install update from vendor's website.