Linux Kernel Memory Leak Vulnerability in MMC SDHCI-PCI Component

A vulnerability in the Linux kernel's MMC SDHCI-PCI component can lead to a memory leak. This issue arises from a missing call to 'pci_dev_put()', which is necessary to decrease the reference count of a 'pci_dev' object before the 'amd_probe()' function returns. While the vulnerability does not affect the 'smbus_dev == NULL' branch, where 'pci_dev_put()' can safely handle a NULL input, the omission in other cases can cause a memory leak.

Impact

The vulnerability can cause a memory leak, potentially leading to increased memory usage and degradation of system performance over time.