SB2021092234 - Ubuntu update for linux-raspi2

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Main Vulnerability Database SB2021092234

SB2021092234 - Ubuntu update for linux-raspi2

Published: September 22, 2021

Security Bulletin ID SB2021092234
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 of uninitialized resource (CVE-ID: CVE-2021-34693)

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

The vulnerability exists due to net/can/bcm.c in the Linux kernel through 5.12.10 allows local users to obtain sensitive information from kernel stack memory because parts of a data structure are uninitialized.


2) Out-of-bounds write (CVE-ID: CVE-2021-3612)

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

The vulnerability exists due to a boundary error in joystick devices subsystem in Linux kernel. A local user can make a specially crafted JSIOCSBTNMAP IOCTL call, trigger out-of-bounds write and execute arbitrary code with escalated privileges.


Remediation

Install update from vendor's website.

References