PT-2021-3378 · Linux+10 · Linux Kernel+10

Published 2020-10-15 · Updated 2023-01-11 · CVE-2021-3612

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Linux kernel versions prior to 5.9-rc1

Description The issue is related to an out-of-bounds memory write flaw in the Linux kernel's joystick devices subsystem. This flaw occurs when a user calls the ioctl JSIOCSBTNMAP function. It allows a local user to crash the system or possibly escalate their privileges on the system, posing a threat to confidentiality, integrity, and system availability.

Recommendations For Linux kernel versions prior to 5.9-rc1, update to version 5.9-rc1 or later to resolve the issue. As a temporary workaround, consider restricting access to the ioctl JSIOCSBTNMAP function to minimize the risk of exploitation.

Exploit

Fix

DoS

Buffer Overflow

Memory Corruption

RCE

Weakness Enumeration

CWE-119

CWE-787

CWE-20

Related Identifiers

ALSA-2022:1988

ALT-PU-2020-3058

ALT-PU-2020-3211

ALT-PU-2020-3553

ALT-PU-2020-3570

ALT-PU-2021-1083

ALT-PU-2021-1105

ALT-PU-2021-1621

ALT-PU-2021-1656

ALT-PU-2021-1739

ALT-PU-2021-1862

ALT-PU-2021-1866

ALT-PU-2021-1870

BDU:2021-03229

CESA-2022_1975

CESA-2022_1988

CVE-2021-3612

DLA-2785-1

DLA-2843-1

OPENSUSE-SU-2021:1076-1

OPENSUSE-SU-2021:2645-1

OPENSUSE-SU-2021:2687-1

OPENSUSE-SU-2021_1076-1

OPENSUSE-SU-2021_2645-1

OPENSUSE-SU-2021_2687-1

RHSA-2022:1975

RHSA-2022:1988

RHSA-2022_1975

RHSA-2022_1988

RLSA-2022:1975

RLSA-2022:1988

SUSE-SU-2021:2407-1

SUSE-SU-2021:2408-1

SUSE-SU-2021:2416-1

SUSE-SU-2021:2438-1

SUSE-SU-2021:2599-1

SUSE-SU-2021:2599-2

SUSE-SU-2021:2643-1

SUSE-SU-2021:2645-1

SUSE-SU-2021:2687-1

USN-5070-1

USN-5071-1

USN-5071-2

USN-5071-3

USN-5073-1

USN-5073-2

USN-5073-3

USN-5096-1

USN-5106-1

USN-5120-1

USN-5299-1

USN-5343-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Centos

Linuxmint

Linux Kernel

Red Hat

Red Os

Rocky Linux

Suse

Ubuntu

References · 352

• 🔥 https://lore.kernel.org/linux-input/[e-mail] · Exploit
• https://ubuntu.com/security/notices/USN-5071-3 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-40490 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2022:1988 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:1076-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5070-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-5995 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-38199 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-3612 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2022:1975 · Vendor Advisory
• https://ubuntu.com/security/CVE-2020-26555 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-45485 · Vendor Advisory
• https://osv.dev/vulnerability/USN-5070-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-38202 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2599-2 · Vendor Advisory