CVE-2026-80867 (GCVE-0-2026-80867)

Vulnerability from cvelistv5 – Published: 2026-09-04 16:48 – Updated: 2026-09-04 16:48
VLAI
Title
alpha/PCI: Add security_locked_down() check to pci_mmap_resource()
Summary
In the Linux kernel, the following vulnerability has been resolved: alpha/PCI: Add security_locked_down() check to pci_mmap_resource() Currently, Alpha's pci_mmap_resource() does not check security_locked_down(LOCKDOWN_PCI_ACCESS) before allowing userspace to mmap PCI BARs. The generic version has had this check since commit eb627e17727e ("PCI: Lock down BAR access when the kernel is locked down") to prevent DMA attacks when the kernel is locked down. Add the same check to Alpha's pci_mmap_resource().
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: eb627e17727ebeede70697ae1798688b0d328b54 , < 6e368485a1ac19fbde0a8b6a332d4545ae72a8ac (git)
Affected: eb627e17727ebeede70697ae1798688b0d328b54 , < ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b (git)
Affected: eb627e17727ebeede70697ae1798688b0d328b54 , < c3234efe21d4198945492cf7dba6859476f0f6ff (git)
Affected: eb627e17727ebeede70697ae1798688b0d328b54 , < 4de5ff924c0a8ef8166c1a68af9087826e1e8d61 (git)
Affected: eb627e17727ebeede70697ae1798688b0d328b54 , < 85f966b1120874fe530edec50d28373ceb06ebcd (git)
Affected: eb627e17727ebeede70697ae1798688b0d328b54 , < 94defb18ac792fd16407d5a52ad0d3f5055c4b43 (git)
Affected: eb627e17727ebeede70697ae1798688b0d328b54 , < 257b55dc3d18d7ef01f62a8ff7317871f7597e28 (git)
Affected: eb627e17727ebeede70697ae1798688b0d328b54 , < 78a228f0aa0e9eba31955950c8a40a9945e2c8bb (git)
Create a notification for this product.
Linux Linux Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 5.10.261 , ≤ 5.10.* (semver)
Unaffected: 5.15.212 , ≤ 5.15.* (semver)
Unaffected: 6.1.178 , ≤ 6.1.* (semver)
Unaffected: 6.6.145 , ≤ 6.6.* (semver)
Unaffected: 6.12.97 , ≤ 6.12.* (semver)
Unaffected: 6.18.40 , ≤ 6.18.* (semver)
Unaffected: 7.1.5 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
Create a notification for this product.
Show details on NVD website
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nalpha/PCI: Add security_locked_down() check to pci_mmap_resource()\n\nCurrently, Alpha\u0027s pci_mmap_resource() does not check\nsecurity_locked_down(LOCKDOWN_PCI_ACCESS) before allowing userspace to mmap\nPCI BARs.\n\nThe generic version has had this check since commit eb627e17727e (\"PCI:\nLock down BAR access when the kernel is locked down\") to prevent DMA\nattacks when the kernel is locked down.\n\nAdd the same check to Alpha\u0027s pci_mmap_resource()."
        }
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      "providerMetadata": {
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    "dateReserved": "2026-08-26T14:34:25.798Z",
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    "state": "PUBLISHED"
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            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nalpha/PCI: Add security_locked_down() check to pci_mmap_resource()\n\nCurrently, Alpha\u0027s pci_mmap_resource() does not check\nsecurity_locked_down(LOCKDOWN_PCI_ACCESS) before allowing userspace to mmap\nPCI BARs.\n\nThe generic version has had this check since commit eb627e17727e (\"PCI:\nLock down BAR access when the kernel is locked down\") to prevent DMA\nattacks when the kernel is locked down.\n\nAdd the same check to Alpha\u0027s pci_mmap_resource()."
          }
        ],
        "id": "CVE-2026-80867",
        "lastModified": "2026-09-04T17:16:58.510",
        "metrics": {},
        "published": "2026-09-04T17:16:58.510",
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        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.