In the Linux kernel, the following vulnerability has been resolved: mmc: vub300: 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 goto error path which will call mmc_free_host(), besides, the timer added before mmc_add_host() needs be del. And this patch fixes another missing call mmc_free_host() if usb_control_msg() fails.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

No data.

No data.

References
Link Providers
https://git.kernel.org/stable/c/0613ad2401f88bdeae5594c30afe318e93b14676 cve-icon cve-icon
https://git.kernel.org/stable/c/2044b2ea77945f372ef161d1bbf814e471767ff2 cve-icon cve-icon
https://git.kernel.org/stable/c/25f05d762ca5e1c685002a53dd44f68e78ca3feb cve-icon cve-icon
https://git.kernel.org/stable/c/3049a3b927a40d89d4582ff1033cd7953be773c7 cve-icon cve-icon
https://git.kernel.org/stable/c/3b29f8769d32016b2d89183db4d80c7a71b7e35e cve-icon cve-icon
https://git.kernel.org/stable/c/41ed46bdbd2878cd6567abe0974a445f8b1b8ec8 cve-icon cve-icon
https://git.kernel.org/stable/c/a46e681151bbdacdf6b89ee8c4e5bad0555142bb cve-icon cve-icon
https://git.kernel.org/stable/c/afc898019e7bf18c5eb7a0ac19852fcb1b341b3c cve-icon cve-icon
https://git.kernel.org/stable/c/c9e85979b59cb86f0a15defa8199d740e2b36b90 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025091549-CVE-2022-50251-c216@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2022-50251 cve-icon
https://www.cve.org/CVERecord?id=CVE-2022-50251 cve-icon
History

Wed, 17 Sep 2025 11:00:00 +0000

Type Values Removed Values Added
First Time appeared Linux
Linux linux Kernel
Vendors & Products Linux
Linux linux Kernel

Tue, 16 Sep 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Mon, 15 Sep 2025 14:15:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: mmc: vub300: 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 goto error path which will call mmc_free_host(), besides, the timer added before mmc_add_host() needs be del. And this patch fixes another missing call mmc_free_host() if usb_control_msg() fails.
Title mmc: vub300: fix return value check of mmc_add_host()
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2025-09-15T14:02:12.331Z

Updated: 2025-09-15T14:02:12.331Z

Reserved: 2025-09-15T13:58:00.973Z

Link: CVE-2022-50251

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-09-15T14:15:35.750

Modified: 2025-09-15T15:21:42.937

Link: CVE-2022-50251

cve-icon Redhat

Severity : Low

Publid Date: 2025-09-15T00:00:00Z

Links: CVE-2022-50251 - Bugzilla