SB2022050927 - SUSE update for the Linux Kernel (Live Patch 17 for SLE 15 SP3) 

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Main Vulnerability Database SB2022050927

SB2022050927 - SUSE update for the Linux Kernel (Live Patch 17 for SLE 15 SP3)

Published: May 9, 2022

Security Bulletin ID SB2022050927
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2021-39698)

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

The vulnerability exists due to a use-after-free error in Linux kernel. A local user can run a specially crafted program to trigger the use-after-free error and execute arbitrary code with elevated privileges.


2) Out-of-bounds write (CVE-ID: CVE-2022-1158)

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

The vulnerability exists due the KVM implementation in Linux kernel does not properly perform guest page table updates in some situations. A remote user on the guest operating system can trigger memory corruption and perform a denial of service attack against the host OS.


Remediation

Install update from vendor's website.

References