What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-15 · updated 2026-08-04
• Weakness: CWE-129

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

Affected products

• Linux kernel: from 5.12 before 5.12.10; 5.13-rc1, 5.13-rc2, 5.13-rc3, 5.13-rc4 — fixed in 5.12.10

How to fix

Upgrade to a fixed version: Linux kernel 5.12.10. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/6919e8a24e70b6ba148fe07f44f835bcdd1a8d02
• https://git.kernel.org/stable/c/d874e6c06952382897d35bf4094193cd44ae91bd
• https://git.kernel.org/stable/c/6919e8a24e70b6ba148fe07f44f835bcdd1a8d02
• https://git.kernel.org/stable/c/d874e6c06952382897d35bf4094193cd44ae91bd

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