CVE-2021-47135 mt76: mt7921: fix possible AOOB issue in mt7921_mcu_tx_rate_report

What is CVE-2021-47135?

CVE-2021-47135 is a high-severity memory corruption vulnerability in Linux kernel, published on 15 Mar 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

mt76: mt7921: fix possible AOOB issue in mt7921_mcu_tx_rate_report

Fix possible array out of bound access in mt7921_mcu_tx_rate_report. Remove unnecessary varibable in mt7921_mcu_tx_rate_report

Weakness: CWE-129

Which versions are affected by CVE-2021-47135?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2021-47135?

No fix has been published for CVE-2021-47135 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2021-47135 being exploited?

There is no known exploitation of CVE-2021-47135 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-xvqv-m23r-hxp7, UBUNTU-CVE-2021-47135.