SB2023012459 - Red Hat Enterprise Linux 8.6 Extended Update Support update for kernel

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Main Vulnerability Database SB2023012459

SB2023012459 - Red Hat Enterprise Linux 8.6 Extended Update Support update for kernel

Published: January 24, 2023

Security Bulletin ID SB2023012459
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Security restrictions bypass (CVE-ID: CVE-2022-26373)

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

The vulnerability exists due to non-transparent sharing of return predictor targets between contexts in Intel CPU processors. A local user can bypass the expected architecture isolation between contexts and gain access to sensitive information on the system.


2) Buffer overflow (CVE-ID: CVE-2022-4139)

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

The vulnerability exists due to a boundary error within the i915 kernel driver on Linux kernel. A local user can trigger memory corruption and execute arbitrary code with elevated privileges.



Remediation

Install update from vendor's website.

References