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CVE-2026-89453

iommu/amd: Put PCI device after handling PPR faults

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 978d626b8f1a239acc635323d731c77eae54eb61
Version < 1de4443f85e4405af00153cdf8ba73ff12a65036
Status affected
Version 978d626b8f1a239acc635323d731c77eae54eb61
Version < cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e
Status affected
Version 978d626b8f1a239acc635323d731c77eae54eb61
Version < d1470e16c1977e6c94fadf6048deafaa4d150fec
Status affected
Version 978d626b8f1a239acc635323d731c77eae54eb61
Version < af3b69b16383fbc8fe5f61b5b0150d2e41ede71f
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.10
Status affected
Version 0
Version < 6.10
Status unaffected
Version <= 6.12.*
Version 6.12.109
Status unaffected
Version <= 6.18.*
Version 6.18.50
Status unaffected
Version <= 7.2.*
Version 7.2.4
Status unaffected
Version <= *
Version 7.3-rc1
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.2% 0.1
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/1de4443f85e4405af00153cdf8ba73ff12a65036
https://git.kernel.org/stable/c/cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e
https://git.kernel.org/stable/c/d1470e16c1977e6c94fadf6048deafaa4d150fec
https://git.kernel.org/stable/c/af3b69b16383fbc8fe5f61b5b0150d2e41ede71f