PT-2021-8233 · Linux+4 · Linux Kernel+4

Syzbot · Published 2021-11-26 · Updated 2025-04-09 · CVE-2021-47602

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 the mac80211 component in the Linux kernel, where an uninitialized value is used due to a status of a non-QoS nullfunc packet. This packet is not long enough to contain the QoS header, causing the problem. The vulnerability can be exploited to cause a denial of service.

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

Exploit

Access of Uninitialized Pointer

Use of Uninitialized Resource

Weakness Enumeration

CWE-824

CWE-908

Related Identifiers

BDU:2024-11558

CVE-2021-47602

OESA-2024-1793

OPENSUSE-SU-2024_2362-1

OPENSUSE-SU-2024_2372-1

OPENSUSE-SU-2024_2394-1

SUSE-SU-2024:2360-1

SUSE-SU-2024:2362-1

SUSE-SU-2024:2372-1

SUSE-SU-2024:2381-1

SUSE-SU-2024:2384-1

SUSE-SU-2024:2394-1

SUSE-SU-2024:2561-1

SUSE-SU-2024:2902-1

SUSE-SU-2024:2929-1

SUSE-SU-2024:2939-1

USN-7429-1

USN-7429-2

Affected Products

Astra Linux

Linux Kernel

Red Os

Suse

Ubuntu

References · 1427

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/local/vmwgfx_fd_priv_esc.rb · Exploit
• https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387b · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2024-38630 · Security Note
• https://ubuntu.com/security/CVE-2021-47235 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-36946 · Security Note
• https://ubuntu.com/security/CVE-2024-50167 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47122 · Vendor Advisory
• http://repo.red-soft.ru/redos/7.3c/x86_64/updates · Vendor Advisory
• https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981a · Patch
• https://ubuntu.com/security/CVE-2024-56658 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-47602 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2024-38549 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-47602 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-21700 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-50265 · Vendor Advisory