Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Put PCI device after handling PPR faults iommu_call_iopf_notifier() looks up the requester with pci_get_domain_bus_and_slot(), which returns a PCI device with its reference count incremented. Neither the successful iommu_report_device_fault() path nor the abort path drops that reference, so every handled PPR request leaks a PCI device reference. This is the same ownership rule that was fixed for the old iommu_v2 ppr_notifier() path by commit 6cf0981c2233 ("iommu/amd: Fix pci device refcount leak in ppr_notifier()"), but iommu_call_iopf_notifier() was added later as a separate PPR/IOPF notifier path. Drop the PCI device reference after handling the PPR entry.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 978d626b8f1a239acc635323d731c77eae54eb61 before 1de4443f85e4405af00153cdf8ba73ff12a65036; affected 978d626b8f1a239acc635323d731c77eae54eb61 before cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e; affected 978d626b8f1a239acc635323d731c77eae54eb61 before d1470e16c1977e6c94fadf6048deafaa4d150fec; affected 978d626b8f1a239acc635323d731c77eae54eb61 before af3b69b16383fbc8fe5f61b5b0150d2e41ede71f |
| Linux / Linux | affected 6.10; unaffected 0 before 6.10; unaffected 6.12.109 through 6.12.*; unaffected 6.18.50 through 6.18.*; unaffected 7.2.4 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.