PT-2021-8267 · Linux+1 · Linux Kernel+1

Evelyn Tsai · Published 2021-03-03 · Updated 2026-03-14 · CVE-2021-47028

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description The issue is related to the mt76: mt7915 component in the Linux kernel, where a vulnerability was resolved by properly checking rate info to fix unexpected reporting. The vulnerability is associated with insufficient input validation, which could allow an attacker to cause a denial of service. The call trace includes functions such as cfg80211 calculate bitrate, ieee80211s update metric, ieee80211 tx status ext, mt7915 mcu get rx rate, mt7915 mac tx free, mt7915 queue rx skb, mt76 dma cleanup, napi poll, napi workfn, process one work, worker thread, kthread, and ret from fork.

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

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2025-00805

CVE-2021-47028

Affected Products

Debian

Linux Kernel

References · 17

• https://osv.dev/vulnerability/CVE-2021-47028 · Vendor Advisory
• https://git.kernel.org/stable/c/4bd926e5ca88eac4d95eacb806b229f8729bc62e · Patch
• https://osv.dev/vulnerability/ROOT-OS-DEBIAN-11-CVE-2021-47028 · Vendor Advisory
• https://git.kernel.org/stable/c/f43b941fd61003659a3f0e039595e5e525917aa8 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-47028 · Security Note
• https://bdu.fstec.ru/vul/2025-00805 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-47028 · Security Note
• https://git.kernel.org/stable/c/dfc8a71448c7d4fec38fb22bdc8a76d79c14b6da · Patch
• https://wiki.astralinux.ru/astra-linux-se81-bulletin-20241206SE81 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-47028 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-47028 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47028 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-47028 · Vendor Advisory
• https://t.me/cvenotify/103402 · Telegram Post
• https://lore.kernel.org/linux-cve-announce/2024022834-CVE-2021-47028-3a13@gregkh · Note