SB2020120932 - Information disclosure in Linux kernel

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Main Vulnerability Database SB2020120932

SB2020120932 - Information disclosure in Linux kernel

Published: December 9, 2020 Updated: October 4, 2021

Security Bulletin ID SB2020120932
Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Information disclosure

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 security vulnerability.


1) Improper locking (CVE-ID: CVE-2020-29660)

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

The vulnerability exists due to double-locking error in drivers/tty/tty_io.c and drivers/tty/tty_jobctrl.c. An authenticated local user can exploit this vulnerability to perform a read-after-free attack against TIOCGSID and gain access to sensitive information.


Remediation

Install update from vendor's website.

References