CVE-2022-50858

medium

Description

In the Linux kernel, the following vulnerability has been resolved: mmc: alcor: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, the memory that allocated in mmc_alloc_host() will be leaked and it will lead a kernel crash because of deleting not added device in the remove path. So fix this by checking the return value and calling mmc_free_host() in the error path.

References

https://git.kernel.org/stable/c/e93d1468f429475a753d6baa79b853b7ee5ef8c0

https://git.kernel.org/stable/c/60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2

https://git.kernel.org/stable/c/4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2

https://git.kernel.org/stable/c/48dc06333d75f41c2ce9ba954bc3231324b45914

https://git.kernel.org/stable/c/29c5b4da41f35108136d843c7432885c78cf8272

https://git.kernel.org/stable/c/289c964fe182ce755044a6cd57698072e12ffa6f

Details

Source: Mitre, NVD

Published: 2025-12-30

Updated: 2025-12-31

Risk Information

CVSS v2

Base Score: 4.9

Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium

EPSS

EPSS: 0.00024