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CVE-2022-50852

11
FAUCET Score

CVE-2022-50852 is a use-after-free vulnerability in the mt7921_acpi_read() function within the MediaTek mt76 WiFi driver for the Linux kernel. This flaw occurs when the "sar_root" variable is dereferenced after it has already been freed, leading to potential system instability or arbitrary code execution. While no CVSS score is available, its EPSS and FAUCET Risk Scores are very low, suggesting a limited impact and exploitability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
LinuxLinux
6.0CNA affecteddefault affected
LinuxLinux
>= f965333e491e36adb0fa91e389fba8685b704fb6, < 3ed0b382cb36f6dac9f93b3a5533cfcd699409a5, >= f965333e491e36adb0fa91e389fba8685b704fb6, < e7de4b4979bd8d313ec837931dde936653ca82eaCNA affecteddefault unaffected

CVSS Data

CVSS data has not been published for this CVE.

Exploit Intelligence

EPSS Score
0.15%
Probability of exploitation in next 30 days
EPSS Percentile
5.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15

Social Chatter

Media Mentions

No media coverage found for this CVE.

Remediation

Vendor Patches (4)

redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: kernel-rt
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: kernel-rt

Vendor Advisories (1)

redhatCVE-2022-50852Moderate

kernel: wifi: mt76: mt7921: fix use after free in mt7921_acpi_read()

Dec 30, 2025

References

git.kernel.org / stable/c/3ed0b382cb36f6dac9f93b3a5533cfcd699409a5
git.kernel.org / stable/c/e7de4b4979bd8d313ec837931dde936653ca82ea