PT-2024-11123 · Linux · Linux Kernel

Ryder Lee · Published 2021-04-21 · Updated 2024-12-09 · CVE-2021-47022

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 A memory leak issue has been resolved in the Linux kernel, specifically in the mt76 module for the mt7615 device. The issue occurs when mt7615 unregister device() is called, and mt7615 tx token put() should be called before mt76 free pending txwi() to prevent the memory leak.

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

Memory Leak

Weakness Enumeration

CWE-401

Related Identifiers

BDU:2025-06547

CVE-2021-47022

Affected Products

Linux Kernel

References · 22

• https://git.kernel.org/stable/c/8ab31da7b89f71c4c2defcca989fab7b42f87d71 · Patch
• https://security-tracker.debian.org/tracker/CVE-2021-47022 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-06547 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-47022 · Security Note
• https://git.kernel.org/stable/c/107bcbb219ac84d885ac63b25246f8d33212bc47 · Patch
• https://git.kernel.org/stable/c/6c5b2b0c6e5a6ce2d8f9f85b8b72bfad60eaa506 · Patch
• https://cve.org/CVERecord?id=CVE-2021-47022 · Security Note
• https://git.kernel.org/stable/c/4fa28c807da54c1d720b3cc12e48eb9bea1e2c8f · Patch
• https://osv.dev/vulnerability/CVE-2021-47022 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47022 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47022 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47022 · Vendor Advisory
• https://twitter.com/CVEnew/status/1762754406695780584 · Twitter Post
• https://lore.kernel.org/linux-cve-announce/2024022833-CVE-2021-47022-402e@gregkh/T/#u · Note
• https://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.176-lvc1&id=4fa28c807da54c1d720b3cc12e48eb9bea1e2c8f · Note