CVE-2022-50418: wifi: ath11k: mhi: fix potential memory leak in ath11k_mhi_register()

Severity: medium (CVSS 5.5 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: 2025-09-18 · updated 2026-08-15
Weakness: CWE-401

Description

In the Linux kernel, the following vulnerability has been resolved: wifi: ath11k: mhi: fix potential memory leak in ath11k_mhi_register() mhi_alloc_controller() allocates a memory space for mhi_ctrl. When gets some error, mhi_ctrl should be freed with mhi_free_controller(). But when ath11k_mhi_read_addr_from_dt() fails, the function returns without calling mhi_free_controller(), which will lead to a memory leak. We can fix it by calling mhi_free_controller() when ath11k_mhi_read_addr_from_dt() fails.

Affected products

Linux kernel: from 5.6 before 5.19.17; from 6.0 before 6.0.3 — fixed in 5.19.17, 6.0.3

How to fix

Upgrade to a fixed version: Linux kernel 5.19.17, 6.0.3. Check the vendor advisory for mitigations.

References

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