SB20220201106 - SUSE update for the Linux Kernel (Live Patch 15 for SLE 15 SP2)

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Main Vulnerability Database SB20220201106

SB20220201106 - SUSE update for the Linux Kernel (Live Patch 15 for SLE 15 SP2)

Published: February 1, 2022 Updated: April 1, 2026

Security Bulletin ID SB20220201106
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Adjecent network
Highest impact Code execution

Breakdown by Severity

Medium 25% Low 75%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


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

CWE-ID: CWE-310 - Cryptographic Issues

CVSSv4: CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:L/SA:N/E:U/U:Green


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.


2) Use-after-free (CVE-ID: CVE-2021-4154)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear


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

The vulnerability exists due to a use-after-free error within the cgroup1_parse_param() function in kernel/cgroup/cgroup-v1.c in Linux kernel's cgroup v1 parser. A local user can execute arbitrary code via the fsconfig syscall parameter leading to a container breakout.


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

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


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.


4) Integer overflow (CVE-ID: CVE-2022-0185)

CWE-ID: CWE-190 - Integer overflow

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear


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

The vulnerability exists due to integer overflow in the legacy_parse_param() function in fs/fs_context.c in Linux kernel. A local user can tun a specially crafted program to trigger integer overflow and execute arbitrary code with root privileges.



Remediation

Install update from vendor's website.

References