SB2021040824 - Advanced Virtualization for RHEL 8 update for the virt:8.3 and virt-devel:8.3 modules
Published: April 8, 2021
Security Bulletin ID
SB2021040824
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Out-of-bounds read (CVE-ID: CVE-2021-20221)
The vulnerability allows a local user to perform DoS attack.
The vulnerability exists due to an out-of-bounds heap buffer access in the ARM Generic Interrupt Controller emulator of QEMU. A privileged guest user may use this flaw to crash the QEMU process on the host resulting in DoS scenario.
Remediation
Install update from vendor's website.