Description
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.
Metrics
No CVSS score has been published yet.
Affected software
Source: the vendor's advisory (CNA). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 978d626b8f1a239acc635323d731c77eae54eb61, < 1de4443f85e4405af00153cdf8ba73ff12a65036; >= 978d626b8f1a239acc635323d731c77eae54eb61, < cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e; >= 978d626b8f1a239acc635323d731c77eae54eb61, < d1470e16c1977e6c94fadf6048deafaa4d150fec; >= 978d626b8f1a239acc635323d731c77eae54eb61, < af3b69b16383fbc8fe5f61b5b0150d2e41ede71f |
| Linux | Linux | 6.10 |
References
Timeline
- Published
- Sep 11, 2026
- Last modified
- Oct 19, 2026
- NVD status
- Received