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.
CVE-2026-89453
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-89453
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "978d626b8f1a239acc635323d731c77eae54eb61",
"lessThan": "1de4443f85e4405af00153cdf8ba73ff12a65036",
"versionType": "git"
},
{
"status": "affected",
"version": "978d626b8f1a239acc635323d731c77eae54eb61",
"lessThan": "cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e",
"versionType": "git"
},
{
"status": "affected",
"version": "978d626b8f1a239acc635323d731c77eae54eb61",
"lessThan": "d1470e16c1977e6c94fadf6048deafaa4d150fec",
"versionType": "git"
},
{
"status": "affected",
"version": "978d626b8f1a239acc635323d731c77eae54eb61",
"lessThan": "af3b69b16383fbc8fe5f61b5b0150d2e41ede71f",
"versionType": "git"
}
],
"programFiles": [
"drivers/iommu/amd/ppr.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "6.10"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "6.10",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.12.109",
"versionType": "semver",
"lessThanOrEqual": "6.12.*"
},
{
"status": "unaffected",
"version": "6.18.50",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.4",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/iommu/amd/ppr.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-89453
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #34985 · Revision 1
- Added to Heist Feed
- Publisher date