CVE-2022-49002

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix PCI device refcount leak in dmar_dev_scope_init() for_each_pci_dev() is implemented by pci_get_device(). The comment of pci_get_device() says that it will increase the reference count for the returned pci_dev and also decrease the reference count for the input pci_dev @from if it is not NULL. If we break for_each_pci_dev() loop with pdev not NULL, we need to call pci_dev_put() to decrease the reference count. Add the missing pci_dev_put() for the error path to avoid reference count leak.

• linux linux kernel (>= 3.15 < 4.9.335) • linux linux kernel (>= 4.10 < 4.14.301) • linux linux kernel (>= 4.15 < 4.19.268) • linux linux kernel (>= 4.20 < 5.4.226) • linux linux kernel (>= 5.5 < 5.10.158) • linux linux kernel (>= 5.11 < 5.15.82) • linux linux kernel (>= 5.16 < 6.0.12) • linux linux kernel 6.1