PT-2021-7674 · Linux+7 · Linux Kernel+7

Syzbot · Published 2021-04-06 · Updated 2023-05-17 · CVE-2021-3659

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description The issue is related to a NULL pointer dereference flaw in the Linux kernel's IEEE 802.15.4 wireless networking subsystem. This occurs when a user closes the LR-WPAN connection, potentially allowing a local user to crash the system. The highest threat from this issue is to system availability.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

NULL Pointer Dereference

Unchecked Return Value

Weakness Enumeration

CWE-476

CWE-252

Related Identifiers

ALSA-2021:4356

ALT-PU-2021-1833

ALT-PU-2021-1888

ALT-PU-2021-1896

ALT-PU-2021-1983

ALT-PU-2021-3481

ALT-PU-2022-1240

ALT-PU-2022-1419

ALT-PU-2022-1421

ALT-PU-2023-1814

BDU:2023-01194

CESA-2021_4140

CESA-2021_4356

CVE-2021-3659

OESA-2021-1310

OPENSUSE-SU-2021:1142-1

OPENSUSE-SU-2021:2645-1

OPENSUSE-SU-2021:2687-1

OPENSUSE-SU-2021:3876-1

OPENSUSE-SU-2021_1142-1

OPENSUSE-SU-2021_2645-1

OPENSUSE-SU-2021_2687-1

OPENSUSE-SU-2021_3876-1

RHSA-2021:4140

RHSA-2021:4356

RHSA-2021_4140

RHSA-2021_4356

SUSE-SU-2021:2643-1

SUSE-SU-2021:2644-1

SUSE-SU-2021:2645-1

SUSE-SU-2021:2646-1

SUSE-SU-2021:2647-1

SUSE-SU-2021:2678-1

SUSE-SU-2021:2687-1

SUSE-SU-2021:2756-1

SUSE-SU-2021:3876-1

SUSE-SU-2021:3929-1

SUSE-SU-2021:3935-1

SUSE-SU-2021:3969-1

SUSE-SU-2021:3972-1

USN-6001-1

USN-6013-1

USN-6014-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Centos

Linux Kernel

Red Hat

Suse

Ubuntu

References · 429

• https://ubuntu.com/security/CVE-2021-28713 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-3772 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-0850 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-3659 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-3646 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-4203 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2678-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-1095 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-47929 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-0617 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2021:2687-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2022-1516 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:3929-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:3935-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2644-1 · Vendor Advisory