SB2024020875 - Red Hat Enterprise Linux 7 update for linux-firmware
Published: February 8, 2024
Security Bulletin ID
SB2024020875
CSH 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 vulnerability.
1) Reliance on undefined behavior (CVE-ID: CVE-2023-20592)
CWE-ID: CWE-758 - Reliance on Undefined, Unspecified, or Implementation-Defined Behavior
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to unexpected behavior of the INVD instruction in some AMD CPUs. A malicious hypervisor can affect cache line write-back behavior of the CPU and modify guest virtual machine (VM) memory.
Remediation
Install update from vendor's website.