GHSA-6R46-6GMQ-67CV

Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-04 18:31
VLAI
Details

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().

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80867"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T17:16:58Z",
    "severity": null
  },
  "details": "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": "GHSA-6r46-6gmq-67cv",
  "modified": "2026-09-04T18:31:32Z",
  "published": "2026-09-04T18:31:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80867"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/257b55dc3d18d7ef01f62a8ff7317871f7597e28"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4de5ff924c0a8ef8166c1a68af9087826e1e8d61"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e368485a1ac19fbde0a8b6a332d4545ae72a8ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/78a228f0aa0e9eba31955950c8a40a9945e2c8bb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/85f966b1120874fe530edec50d28373ceb06ebcd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/94defb18ac792fd16407d5a52ad0d3f5055c4b43"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c3234efe21d4198945492cf7dba6859476f0f6ff"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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