CVE-2022-50858
mmc: alcor: fix return value check of mmc_add_host()
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.
INFO
Published Date :
Dec. 30, 2025, 1:16 p.m.
Last Modified :
Dec. 30, 2025, 1:16 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2022-50858
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Verify the return value of mmc_add_host().
- Call mmc_free_host() when an error occurs.
- Apply the provided kernel patch.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2022-50858.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-50858 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2022-50858
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2022-50858 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-50858 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 30, 2025
Action Type Old Value New Value Added 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. Added Reference https://git.kernel.org/stable/c/289c964fe182ce755044a6cd57698072e12ffa6f Added Reference https://git.kernel.org/stable/c/29c5b4da41f35108136d843c7432885c78cf8272 Added Reference https://git.kernel.org/stable/c/48dc06333d75f41c2ce9ba954bc3231324b45914 Added Reference https://git.kernel.org/stable/c/4a6e5d0222804a3eaf2ea4cf893f412e7cf98cb2 Added Reference https://git.kernel.org/stable/c/60fafcf2fb7ee9a4125dc9a86eeb9d490acf23e2 Added Reference https://git.kernel.org/stable/c/e93d1468f429475a753d6baa79b853b7ee5ef8c0