CVE-2026-89453iommu/amd: Put PCI device after handling PPR faults
- —Not scoredno CVSS score yet
- 0.21%Exploitation in 30 daysEPSS · top 89% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
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.
Timeline
ID reserved
By Linux
Published
- 38 days later
· 38 days later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
No CVSS score yet: neither the CNA, CISA nor NVD has scored this CVE. NVD status: Received.
- EPSS (exploitation in 30 days)
- 0.21% · top 89% of all CVEs (15 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Not scored.
Affected products
- affected 978d626b8f1a239acc635323d731c77eae54eb61 – < 1de4443f85e4405af00153cdf8ba73ff12a65036
- affected 978d626b8f1a239acc635323d731c77eae54eb61 – < cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e
- affected 978d626b8f1a239acc635323d731c77eae54eb61 – < d1470e16c1977e6c94fadf6048deafaa4d150fec
- affected 978d626b8f1a239acc635323d731c77eae54eb61 – < af3b69b16383fbc8fe5f61b5b0150d2e41ede71f
- affected 6.10
- unaffected < 6.10
- unaffected 6.12.109 – ≤ 6.12.*
- unaffected 6.18.50 – ≤ 6.18.*
- unaffected 7.2.4 – ≤ 7.2.*
- unaffected 7.3 – ≤ *
References
References4
- https://git.kernel.org/stable/c/1de4443f85e4405af00153cdf8ba73ff12a65036 (opens in a new tab)
- https://git.kernel.org/stable/c/cfc5c1b2caa176dfd40b873a6ff07b11da34cc3e (opens in a new tab)
- https://git.kernel.org/stable/c/d1470e16c1977e6c94fadf6048deafaa4d150fec (opens in a new tab)
- https://git.kernel.org/stable/c/af3b69b16383fbc8fe5f61b5b0150d2e41ede71f (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-76359 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-89453)Record last updated .