CVE-2022-50505

Summary

In the Linux kernel, the following vulnerability has been resolved:

iommu/amd: Fix pci device refcount leak in ppr_notifier()

As comment of pci_get_domain_bus_and_slot() says, it returns a pci device with refcount increment, when finish using it, the caller must decrement the reference count by calling pci_dev_put(). So call it before returning from ppr_notifier() to avoid refcount leak.

Affected Software

VendorProductVersion RangeStatus
LinuxLinuxdaae2d25a4779b272a66ddd01f5810bcee822b9e < bdb2113dd8f17a3cc84a2b4be4968a849f69ec72affected
LinuxLinuxdaae2d25a4779b272a66ddd01f5810bcee822b9e < efd50c65fd1cdef63eb58825f3fe72496443764caffected
LinuxLinuxdaae2d25a4779b272a66ddd01f5810bcee822b9e < 8581ec1feb895ff596fe3d326d9ba320083290aaaffected
LinuxLinuxdaae2d25a4779b272a66ddd01f5810bcee822b9e < 03f51c72997559e73b327608f0cccfded715c9a0affected
LinuxLinuxdaae2d25a4779b272a66ddd01f5810bcee822b9e < 6e501b3fd7a2e1c4372d72bc70717aaca2beb8a5affected
LinuxLinuxdaae2d25a4779b272a66ddd01f5810bcee822b9e < 902cc2507091a81643502d8ceb0e2f105e902518affected
LinuxLinuxdaae2d25a4779b272a66ddd01f5810bcee822b9e < b0637f4bd426925f5c3a15e8f8e36190fe06bac5affected
LinuxLinuxdaae2d25a4779b272a66ddd01f5810bcee822b9e < 6cf0981c2233f97d56938d9d61845383d6eb227caffected
LinuxLinux4.14affected
LinuxLinux0 < 4.14unaffected
LinuxLinux4.14.303 <= 4.14.*unaffected
LinuxLinux4.19.270 <= 4.19.*unaffected
LinuxLinux5.4.229 <= 5.4.*unaffected
LinuxLinux5.10.163 <= 5.10.*unaffected
LinuxLinux5.15.86 <= 5.15.*unaffected
LinuxLinux6.0.16 <= 6.0.*unaffected
LinuxLinux6.1.2 <= 6.1.*unaffected
LinuxLinux6.2 <= *unaffected

Weaknesses

References