SB2022020444 - SUSE update for the Linux Kernel (Live Patch 39 for SLE 12 SP3) 

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2022020444

SB2022020444 - SUSE update for the Linux Kernel (Live Patch 39 for SLE 12 SP3)

Published: February 4, 2022 Updated: June 28, 2025

Security Bulletin ID SB2022020444
Severity
Medium
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Adjecent network
Highest impact Data manipulation

Breakdown by Severity

Medium 20% Low 80%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2018-25020)

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

The vulnerability exists due to a boundary error within the BPF subsystem in the Linux kernel in ernel/bpf/core.c and net/core/filter.c. The kernel mishandles situations with a long jump over an instruction sequence where inner instructions require substantial expansions into multiple BPF instructions. A local user can run a specially crafted program to trigger memory corruption and execute arbitrary code with elevated privileges.


2) Resource exhaustion (CVE-ID: CVE-2019-0136)

The vulnerability allows a remote attacker to perform denial of service (DoS) attack.

The vulnerability exists due to the software does not properly control the allocation and maintenance of a limited resource. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

The vulnerability affects Intel Dual Band Wireless-AC 8260 Windows10 Driver


3) Cryptographic Issues (CVE-ID: CVE-2020-3702)

The vulnerability allows a remote attacker to gain access top sensitive information.

The vulnerability exists due to improper input validation in WIFI driver(Krook). A remote attacker can temporary disable WPA2 or the WPA/WPA2 mixed-mode encryption and intercept traffic in clear text.


4) Use-after-free (CVE-ID: CVE-2021-23134)

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

The vulnerability exists due to a use-after-free error in nfc sockets in the Linux Kernel. A local user with the CAP_NET_RAW capability can trigger use-after-free and escalate privileges on the system.


5) Buffer overflow (CVE-ID: CVE-2021-42739)

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

The vulnerability exists due to a boundary within the firewire subsystem in the Linux kernel in drivers/media/firewire/firedtv-avc.c and drivers/media/firewire/firedtv-ci.c files. A local privileged user can run a specially crafted program tat calls avc_ca_pmt() function to trigger memory corruption and execute arbitrary code with elevated privileges.


Remediation

Install update from vendor's website.

References