FKIE_CVE-2026-80867

Vulnerability from fkie_nvd - Published: 2026-09-04 17:16 - Updated: 2026-09-04 17:16
Severity
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().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/257b55dc3d18d7ef01f62a8ff7317871f7597e28
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4de5ff924c0a8ef8166c1a68af9087826e1e8d61
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6e368485a1ac19fbde0a8b6a332d4545ae72a8ac
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/78a228f0aa0e9eba31955950c8a40a9945e2c8bb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/85f966b1120874fe530edec50d28373ceb06ebcd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/94defb18ac792fd16407d5a52ad0d3f5055c4b43
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c3234efe21d4198945492cf7dba6859476f0f6ff
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/alpha/kernel/pci-sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "6e368485a1ac19fbde0a8b6a332d4545ae72a8ac",
              "status": "affected",
              "version": "eb627e17727ebeede70697ae1798688b0d328b54",
              "versionType": "git"
            },
            {
              "lessThan": "ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b",
              "status": "affected",
              "version": "eb627e17727ebeede70697ae1798688b0d328b54",
              "versionType": "git"
            },
            {
              "lessThan": "c3234efe21d4198945492cf7dba6859476f0f6ff",
              "status": "affected",
              "version": "eb627e17727ebeede70697ae1798688b0d328b54",
              "versionType": "git"
            },
            {
              "lessThan": "4de5ff924c0a8ef8166c1a68af9087826e1e8d61",
              "status": "affected",
              "version": "eb627e17727ebeede70697ae1798688b0d328b54",
              "versionType": "git"
            },
            {
              "lessThan": "85f966b1120874fe530edec50d28373ceb06ebcd",
              "status": "affected",
              "version": "eb627e17727ebeede70697ae1798688b0d328b54",
              "versionType": "git"
            },
            {
              "lessThan": "94defb18ac792fd16407d5a52ad0d3f5055c4b43",
              "status": "affected",
              "version": "eb627e17727ebeede70697ae1798688b0d328b54",
              "versionType": "git"
            },
            {
              "lessThan": "257b55dc3d18d7ef01f62a8ff7317871f7597e28",
              "status": "affected",
              "version": "eb627e17727ebeede70697ae1798688b0d328b54",
              "versionType": "git"
            },
            {
              "lessThan": "78a228f0aa0e9eba31955950c8a40a9945e2c8bb",
              "status": "affected",
              "version": "eb627e17727ebeede70697ae1798688b0d328b54",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/alpha/kernel/pci-sysfs.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.4"
            },
            {
              "lessThan": "5.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "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",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/257b55dc3d18d7ef01f62a8ff7317871f7597e28"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4de5ff924c0a8ef8166c1a68af9087826e1e8d61"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6e368485a1ac19fbde0a8b6a332d4545ae72a8ac"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/78a228f0aa0e9eba31955950c8a40a9945e2c8bb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/85f966b1120874fe530edec50d28373ceb06ebcd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/94defb18ac792fd16407d5a52ad0d3f5055c4b43"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c3234efe21d4198945492cf7dba6859476f0f6ff"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ed2cd1fee0ed16a1c2dff49175e65c641eb8ae2b"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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