SB2022120306 - Fedora 36 update for kernel

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Main Vulnerability Database SB2022120306

SB2022120306 - Fedora 36 update for kernel

Published: December 3, 2022

Security Bulletin ID SB2022120306
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) NULL pointer dereference (CVE-ID: CVE-2022-4129)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.


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