PT-2024-11185 · Linux · Linux Kernel

Kalle Valo + 1 · Published 2021-04-23 · Updated 2025-02-27 · CVE-2021-47135

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 a possible array out of bound access in the mt7921 mcu tx rate report function. This could potentially lead to security issues. The problem has been resolved by fixing the array out of bound issue and removing an unnecessary variable in the mt7921 mcu tx rate report function.

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

Out of bounds Read

Improper Validation of Array Index

Weakness Enumeration

CWE-125

CWE-129

Related Identifiers

BDU:2025-03652

CVE-2021-47135

Affected Products

Linux Kernel

References · 15

• https://git.kernel.org/stable/c/6919e8a24e70b6ba148fe07f44f835bcdd1a8d02 · Patch
• https://ubuntu.com/security/CVE-2021-47135 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-47135 · Vendor Advisory
• https://git.kernel.org/stable/c/d874e6c06952382897d35bf4094193cd44ae91bd · Patch
• https://cve.org/CVERecord?id=CVE-2021-47135 · Security Note
• https://bdu.fstec.ru/vul/2025-03652 · Security Note
• https://osv.dev/vulnerability/CVE-2021-47135 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-47135 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-47135 · Vendor Advisory
• https://git.kernel.org/linus/d874e6c06952382897d35bf4094193cd44ae91bd · Note
• https://twitter.com/CVEnew/status/1768738320400748665 · Twitter Post
• https://t.me/cvenotify/112573 · Telegram Post
• https://kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.12.10 · Note
• https://lore.kernel.org/linux-cve-announce/2024031515-CVE-2021-47135-2c50@gregkh · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47135 · Note