What’s Vulnerable › Vulnerabilities

CVE-2022-50852: wifi: mt76: mt7921: fix use after free in mt7921_acpi_read()

• Severity: unknown
• 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: 2025-12-30 · updated 2026-06-17

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7921: fix use after free in mt7921_acpi_read() Don't dereference "sar_root" after it has been freed.

Affected products

• Linux kernel: 6.0 — fixed in 6.1

How to fix

Upgrade to a fixed version: Linux kernel 6.1. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/3ed0b382cb36f6dac9f93b3a5533cfcd699409a5
• https://git.kernel.org/stable/c/e7de4b4979bd8d313ec837931dde936653ca82ea

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