Bug 2396520 (CVE-2022-50418)

Summary: CVE-2022-50418 kernel: wifi: ath11k: mhi: fix potential memory leak in ath11k_mhi_register()
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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Version: unspecifiedKeywords: Security
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OS: Linux   
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Description OSIDB Bzimport 2025-09-18 17:02:59 UTC 
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.
Comment 1 Keith Grant 2025-09-18 19:33:06 UTC 
Upstream advisory:
https://lore.kernel.org/linux-cve-announce/2025091855-CVE-2022-50418-deac@gregkh/T