In the Linux kernel, the following vulnerability has been resolved:
mmc: atmel-mci: 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().
So fix this by checking the return value and calling mmc_free_host()
in the error path.
Metrics
Affected Vendors & Products
References
History
Wed, 10 Dec 2025 12:15:00 +0000
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threat_severity
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cvssV3_1
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Tue, 09 Dec 2025 00:30:00 +0000
| Type | Values Removed | Values Added |
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| Description | In the Linux kernel, the following vulnerability has been resolved: mmc: atmel-mci: 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(). So fix this by checking the return value and calling mmc_free_host() in the error path. | |
| Title | mmc: atmel-mci: fix return value check of mmc_add_host() | |
| First Time appeared |
Linux
Linux linux Kernel |
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| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
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| References |
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Status: PUBLISHED
Assigner: Linux
Published: 2025-12-09T00:00:27.592Z
Updated: 2025-12-09T00:00:27.592Z
Reserved: 2025-12-08T23:57:43.372Z
Link: CVE-2022-50653
No data.
Status : Awaiting Analysis
Published: 2025-12-09T01:16:48.207
Modified: 2025-12-09T18:37:13.640
Link: CVE-2022-50653