SB2021011456 - Privilege escalation in Linux kernel DCCP

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Main Vulnerability Database SB2021011456

SB2021011456 - Privilege escalation in Linux kernel DCCP

Published: January 14, 2021 Updated: October 18, 2022

Security Bulletin ID SB2021011456
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) Use-after-free (CVE-ID: CVE-2020-16119)

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

The vulnerability exists due to a use-after-free error caused by the reuse of a DCCP socket with an attached dccps_hc_tx_ccid object as a listener. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.


Remediation

Install update from vendor's website.

References