CVE-2022-50846
mmc: via-sdmmc: fix return value check of mmc_add_host()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: mmc: via-sdmmc: 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 which will call mmc_free_host().
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 30, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
f0bf7f61b8405224bc52fc9a3ccd167a68126e00 < 076bcd2c93e16b05c10564e299d6e5d26a766d00 f0bf7f61b8405224bc52fc9a3ccd167a68126e00 < 12b8e81b77c05c658efd9cde3585bbd65ae39b59 f0bf7f61b8405224bc52fc9a3ccd167a68126e00 < 95025a8dd0ec015872f6c16473fe04d6264e68ca f0bf7f61b8405224bc52fc9a3ccd167a68126e00 < f59ef2a47a228e51322ad76752a55a8917c56e38 f0bf7f61b8405224bc52fc9a3ccd167a68126e00 < 63400da6cd37a9793c19bb6aed7131b58b975a04 f0bf7f61b8405224bc52fc9a3ccd167a68126e00 < 0959cc1685eb19774300d43ef25e318b457b156b f0bf7f61b8405224bc52fc9a3ccd167a68126e00 < 0ec94795114edc7e24ec71849dce42bfa61dafa3 f0bf7f61b8405224bc52fc9a3ccd167a68126e00 < ba91b413983a9235792523c6b9f7ba2586c4d75d f0bf7f61b8405224bc52fc9a3ccd167a68126e00 < e4e46fb61e3bb4628170810d3f2b996b709b90d9
Linux / Linux
2.6.31
References
git.kernel.org: https://git.kernel.org/stable/c/076bcd2c93e16b05c10564e299d6e5d26a766d00 git.kernel.org: https://git.kernel.org/stable/c/12b8e81b77c05c658efd9cde3585bbd65ae39b59 git.kernel.org: https://git.kernel.org/stable/c/95025a8dd0ec015872f6c16473fe04d6264e68ca git.kernel.org: https://git.kernel.org/stable/c/f59ef2a47a228e51322ad76752a55a8917c56e38 git.kernel.org: https://git.kernel.org/stable/c/63400da6cd37a9793c19bb6aed7131b58b975a04 git.kernel.org: https://git.kernel.org/stable/c/0959cc1685eb19774300d43ef25e318b457b156b git.kernel.org: https://git.kernel.org/stable/c/0ec94795114edc7e24ec71849dce42bfa61dafa3 git.kernel.org: https://git.kernel.org/stable/c/ba91b413983a9235792523c6b9f7ba2586c4d75d git.kernel.org: https://git.kernel.org/stable/c/e4e46fb61e3bb4628170810d3f2b996b709b90d9