CVE-2022-50670
mmc: omap_hsmmc: fix return value check of mmc_add_host()
Description
In the Linux kernel, the following vulnerability has been resolved: mmc: omap_hsmmc: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, it will lead two issues: 1. The memory that allocated in mmc_alloc_host() is leaked. 2. In the remove() path, mmc_remove_host() will be called to delete device, but it's not added yet, it will lead a kernel crash because of null-ptr-deref in device_del(). Fix this by checking the return value and goto error path wihch will call mmc_free_host().
INFO
Published Date :
Dec. 9, 2025, 4:17 p.m.
Last Modified :
Dec. 9, 2025, 6:37 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Solution
- Check return value of mmc_add_host().
- Perform error path handling.
- Call mmc_free_host() on error.
- Fix memory leak and null-ptr-dereference.
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-2022-50670.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2022-50670 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-2022-50670
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).
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The following list is the news that have been mention
CVE-2022-50670 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2022-50670 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.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Dec. 09, 2025
Action Type Old Value New Value Added Description In the Linux kernel, the following vulnerability has been resolved: mmc: omap_hsmmc: fix return value check of mmc_add_host() mmc_add_host() may return error, if we ignore its return value, it will lead two issues: 1. The memory that allocated in mmc_alloc_host() is leaked. 2. In the remove() path, mmc_remove_host() will be called to delete device, but it's not added yet, it will lead a kernel crash because of null-ptr-deref in device_del(). Fix this by checking the return value and goto error path wihch will call mmc_free_host(). Added Reference https://git.kernel.org/stable/c/4e1dc24bcfc8257f24c0663badec7e4f3ae80558 Added Reference https://git.kernel.org/stable/c/62005dfcc396424db3337a1dc3ab49623537f5e5 Added Reference https://git.kernel.org/stable/c/a525cad241c339ca00bf7ebf03c5180f2a9b767c Added Reference https://git.kernel.org/stable/c/a5f8a4583280a76e50329b910e91ef1dea1e6c79 Added Reference https://git.kernel.org/stable/c/f153c9e15f8961bdf38707853e15b42ea7c691d9 Added Reference https://git.kernel.org/stable/c/fb3d596267a98813a7a8206097d8d46c98505a0d