SB2020101413 - Ubuntu update for linux-gke-5.0 

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Main Vulnerability Database SB2020101413

SB2020101413 - Ubuntu update for linux-gke-5.0

Published: October 14, 2020 Updated: April 23, 2025

Security Bulletin ID SB2020101413
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) 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.


2) Security restrictions bypass (CVE-ID: CVE-2020-16120)

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

The vulnerability exists due to security restrictions bypass error within the ovl_open_realfile() and ovl_change_flags() functions in fs/overlayfs/file.c. A local privileged user can gain access to sensitive information.


Remediation

Install update from vendor's website.

References