PT-2024-11131 · Linux · Linux Kernel

Ben Greear · Published 2021-04-11 · Updated 2024-12-12 · CVE-2021-47032

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 vulnerability in the Linux kernel has been resolved, specifically in the mt76 module for the mt7915 device. The issue was related to the tx skb dma unmap, where the first pointer in the txp needed to be unmapped to prevent leaking DMA mapping entries.

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:2025-07252

CVE-2021-47032

Affected Products

Linux Kernel

References · 23

• https://security-tracker.debian.org/tracker/CVE-2021-47032 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-47032 · Vendor Advisory
• https://git.kernel.org/stable/c/4a9dcd6efb2a268fc5707dcfb3b0c412975c4462 · Patch
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47032 · Vendor Advisory
• https://git.kernel.org/stable/c/7dcf3c04f0aca746517a77433b33d40868ca4749 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-47032 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-47032 · Security Note
• https://git.kernel.org/stable/c/4e7914ce23306b28d377ec395e00e5fde0e6f96e · Patch
• https://ubuntu.com/security/CVE-2021-47032 · Vendor Advisory
• https://git.kernel.org/stable/c/e2cdc9cb33c5963efe1a7c022753386f9463d1b7 · Patch
• https://bdu.fstec.ru/vul/2025-07252 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47032 · Vendor Advisory
• https://lore.kernel.org/linux-cve-announce/2024022835-CVE-2021-47032-b4df@gregkh · Note
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.11.21 · Note
• https://git.linuxtesting.ru/pub/scm/linux/kernel/git/lvc/linux-stable.git/commit/?h=v5.10.176-lvc1&id=4e7914ce23306b28d377ec395e00e5fde0e6f96e · Note