PT-2024-11132 · Linux · Linux Kernel

Published 2021-04-11 · Updated 2024-12-12 · CVE-2021-47033

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 mt76 driver, specifically the mt7615 component, where the first pointer in the txp needs to be unmapped to prevent DMA mapping entries from leaking.

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:2025-07253

CVE-2021-47033

Affected Products

Linux Kernel

References · 23

• https://git.kernel.org/stable/c/a025277a80add18c33d01042525a74fe5b875f25 · Patch
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47033 · Vendor Advisory
• https://git.kernel.org/stable/c/ebee7885bb12a8fe2c2f9bac87dbd87a05b645f9 · Patch
• https://git.kernel.org/stable/c/75bc5f779a7664d1fc19cb915039439c6e58bb94 · Patch
• https://git.kernel.org/stable/c/821ae236ccea989a1fcc6abfc4d5b74ad4ba39d2 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-47033 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-47033 · Security Note
• https://osv.dev/vulnerability/CVE-2021-47033 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-47033 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47033 · Vendor Advisory
• https://bdu.fstec.ru/vul/2025-07253 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47033 · Vendor Advisory
• https://git.kernel.org/linus/ebee7885bb12a8fe2c2f9bac87dbd87a05b645f9 · Note
• https://lore.kernel.org/linux-cve-announce/2024022836-CVE-2021-47033-4d0d@gregkh · Note
• https://t.me/cvenotify/104064 · Telegram Post