SB2024100226 - Red Hat Enterprise Linux 8 update for linux-firmware
Published: October 2, 2024
Security Bulletin ID
SB2024100226
Severity
Low
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Input validation error (CVE-ID: CVE-2023-20584)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to insufficient validation of special address ranges with invalid device table entries (DTEs) in IOMMU. A local user can induce DTE faults to bypass RMP checks in SEV-SNP.
2) Incomplete cleanup (CVE-ID: CVE-2023-31356)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incomplete system memory cleanup in SEV firmware. A local privileged user can corrupt guest private memory.
Remediation
Install update from vendor's website.