CVE-2022-50846
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().
References
The following references provide additional information about CVE-2022-50846 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
-
PatchKernel patch commithttps://git.kernel.org/stable/c/076bcd2c93e16b05c10564e299d6e5d26a766d00
-
PatchKernel patch commithttps://git.kernel.org/stable/c/0959cc1685eb19774300d43ef25e318b457b156b
-
PatchKernel patch commithttps://git.kernel.org/stable/c/0ec94795114edc7e24ec71849dce42bfa61dafa3