SB2021082529 - SUSE update for the Linux Kernel (Live Patch 36 for SLE 12 SP3) 

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Main Vulnerability Database SB2021082529

SB2021082529 - SUSE update for the Linux Kernel (Live Patch 36 for SLE 12 SP3)

Published: August 25, 2021

Security Bulletin ID SB2021082529
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Race condition (CVE-ID: CVE-2021-3609)

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

The vulnerability exists due to a race condition in the CAN BCM networking protocol (net/can/bcm.c) in the Linux kernel ranging from version 2.6.25 to mainline 5.13-rc6. A local user can exploit the race and gain unauthorized access to sensitive information and escalate privileges on the system.


2) Out-of-bounds write (CVE-ID: CVE-2021-37576)

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

The vulnerability exists due to a boundary error in arch/powerpc/kvm/book3s_rtas.c in the Linux kernel through 5.13.5 on the powerpc platform. An attacker on KVM guest OS can cause host OS memory corruption via rtas_args.nargs and execute arbitrary code on the host OS.


Remediation

Install update from vendor's website.

References