SB2022060823 - Ubuntu update for linux 

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2022060823

SB2022060823 - Ubuntu update for linux

Published: June 8, 2022 Updated: June 12, 2022

Security Bulletin ID SB2022060823
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Use-after-free (CVE-ID: CVE-2022-1966)

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

The vulnerability exists due to a use-after-free error in the Linux kernel's Netfilter subsystem in net/netfilter/nf_tables_api.c. A local user can trigger use-after-free error to escalate privileges on the system.


2) Improper access control (CVE-ID: CVE-2022-21499)

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to improper access restrictions to the kernel debugger when booted in secure boot environments. A local privileged user can bypass UEFI Secure Boot restrictions.


3) Incorrect default permissions (CVE-ID: CVE-2022-30594)

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

The vulnerability exists due to mishandling seccomp permissions. A local user can bypass intended restrictions on setting the PT_SUSPEND_SECCOMP flag and escalate privileges on the system.


Remediation

Install update from vendor's website.

References