SB2021032005 - Privilege escalation in Linux kernel 

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Main Vulnerability Database SB2021032005

SB2021032005 - Privilege escalation in Linux kernel

Published: March 20, 2021 Updated: January 18, 2022

Security Bulletin ID SB2021032005
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Buffer overflow (CVE-ID: CVE-2021-28952)

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

The vulnerability exists due to a boundary error in the sound/soc/qcom/sdm845.c soundwire device driver in Linux kernel. A local user can run a specially crafted program to trigger a buffer overflow, when an unexpected port ID number is encountered, and execute arbitrary code on the system with elevated privileges.


Remediation

Install update from vendor's website.

References