SB2021111921 - SUSE update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)

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Main Vulnerability Database SB2021111921

SB2021111921 - SUSE update for the Linux Kernel (Live Patch 0 for SLE 15 SP3)

Published: November 19, 2021

Security Bulletin ID SB2021111921
Severity
Low
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Adjecent network
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Type Confusion (CVE-ID: CVE-2021-34866)

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

The vulnerability exists due to a type confusion error within the handling of eBPF programs. A local user can run a specially crafted program on the system to trigger a type confusion and execute arbitrary code with kernel privileges.


2) Use-after-free (CVE-ID: CVE-2021-3752)

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

The vulnerability exists due to a use-after-free error in the Linux kernel’s Bluetooth subsystem when a user calls connect to the socket and disconnect simultaneously. A local user can escalate privileges on the system.


3) Out-of-bounds write (CVE-ID: CVE-2021-41864)

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

The vulnerability exists due to a boundary error when processing untrusted input. A local user can gain access to out-of-bounds memory leading to a system crash or a leak of internal kernel information.


Remediation

Install update from vendor's website.

References