CVE-2026-89453

A flaw was found in the Linux kernel's IOMMU Input/Output Memory Management Unit driver for AMD. This vulnerability occurs when the system handles certain memory access errors, specifically Page Request PPR faults, without properly releasing a reference to a PCI device. This oversight causes a...

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 iommucalliopfnotifier looks up the requester with pcigetdomainbusandslot, which returns a PCI device with its reference count incremented. Neither the successful...