SB2022072304 - Fedora 35 update for xen

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2022072304

SB2022072304 - Fedora 35 update for xen

Published: July 23, 2022

Security Bulletin ID SB2022072304
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Type Confusion (CVE-ID: CVE-2022-23816)

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a branch type confusion. A local user can force the branch predictor to predict the wrong branch type and gain access to sensitive information.


2) Type Confusion (CVE-ID: CVE-2022-23825)

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to a branch type confusion. A local user can force the branch predictor to predict the wrong branch type and gain access to sensitive information.


3) Processor optimization removal or modification of security-critical code (CVE-ID: CVE-2022-29900)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a mistrained branch predictions for return instructions. A local user can execute arbitrary speculative code under certain microarchitecture-dependent conditions. The vulnerability was dubbed  RETbleed.


Remediation

Install update from vendor's website.

References