PT-2025-53976 · Linux+1 · Linux Kernel+1
Published
2025-12-30
·
Updated
2026-02-24
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CVE-2022-50858
None
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Name of the Vulnerable Software and Affected Versions
Linux kernel (affected versions not specified)
Description
The Linux kernel contains a flaw in the mmc subsystem, specifically within the alcor driver. A missing return value check in the
mmc add host() function can lead to a memory leak if the function returns an error. This memory leak occurs because memory allocated by mmc alloc host() is not freed. Subsequently, attempting to remove a device that was not properly added can cause a kernel crash. The issue is resolved by checking the return value of mmc add host() and calling mmc free host() in the error path.Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
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Related Identifiers
Affected Products
Linux Kernel
Alcor Driver