SB2020081826 - Ubuntu update for linux

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Main Vulnerability Database SB2020081826

SB2020081826 - Ubuntu update for linux

Published: August 18, 2020 Updated: April 23, 2025

Security Bulletin ID SB2020081826
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Local access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Input validation error (CVE-ID: CVE-2020-12771)

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to a deadlock if a coalescing operation fails in "btree_gc_coalesce" in "drivers/md/bcache/btree.c" file. A local user can pass specially crafted input to the application and perform a denial of service (DoS) attack.


2) Memory leak (CVE-ID: CVE-2020-15393)

The vulnerability allows a local user to perform DoS attack on the target system.

The vulnerability exists due memory leak in "drivers/usb/misc/usbtest.c" file. A local user can force the application to leak memory and perform denial of service attack.


Remediation

Install update from vendor's website.

References