CVE-2026-93821 (GCVE-0-2026-93821)
Vulnerability from cvelistv5
Published
2026-09-24 16:02
Modified
2026-10-03 10:57
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: PCI: altera: Protect root bus removal with rescan lock Hold the pci_rescan_remove_lock lock while stopping and removing a root bus to avoid racing with concurrent rescan or hotplug operations triggered via sysfs. Such races may lead to use-after-free issues or system crashes. [bhelgaas: commit log]
References
Impacted products
Vendor Product Version
Linux Linux Version: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22
Version: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22
Version: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22
Version: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22
Version: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22
Version: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22
Version: ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/controller/pcie-altera.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "cf9d84d1b6a7c3f3780c043df220a7e9e38137eb",
              "status": "affected",
              "version": "ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22",
              "versionType": "git"
            },
            {
              "lessThan": "fc462f1bdeaea9789928cbfdf5e069ee559c7642",
              "status": "affected",
              "version": "ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22",
              "versionType": "git"
            },
            {
              "lessThan": "442b7f2a093b4a75f8963aaa7cbb2b8df35a6ac3",
              "status": "affected",
              "version": "ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22",
              "versionType": "git"
            },
            {
              "lessThan": "4b69c63cc247fc0f499fbd11076fee9c2a6e6fd7",
              "status": "affected",
              "version": "ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22",
              "versionType": "git"
            },
            {
              "lessThan": "c0cd65906e5f7e293ef2568c9524cc0a918333c3",
              "status": "affected",
              "version": "ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22",
              "versionType": "git"
            },
            {
              "lessThan": "7cbb8f2750d91e64caff89e164ac8280bb80bedc",
              "status": "affected",
              "version": "ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22",
              "versionType": "git"
            },
            {
              "lessThan": "a8759c8ac48c0419f5899e95a6ffc611b07c965b",
              "status": "affected",
              "version": "ec15c4d0d5d2e431169fbdf6c6bcf0c8ff71ef22",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/controller/pcie-altera.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.3"
            },
            {
              "lessThan": "5.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.271",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.222",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.189",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.111",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.53",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: altera: Protect root bus removal with rescan lock\n\nHold the pci_rescan_remove_lock lock while stopping and removing a root bus\nto avoid racing with concurrent rescan or hotplug operations triggered via\nsysfs.  Such races may lead to use-after-free issues or system crashes.\n\n[bhelgaas: commit log]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-03T10:57:52.467Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/cf9d84d1b6a7c3f3780c043df220a7e9e38137eb"
        },
        {
          "url": "https://git.kernel.org/stable/c/fc462f1bdeaea9789928cbfdf5e069ee559c7642"
        },
        {
          "url": "https://git.kernel.org/stable/c/442b7f2a093b4a75f8963aaa7cbb2b8df35a6ac3"
        },
        {
          "url": "https://git.kernel.org/stable/c/4b69c63cc247fc0f499fbd11076fee9c2a6e6fd7"
        },
        {
          "url": "https://git.kernel.org/stable/c/c0cd65906e5f7e293ef2568c9524cc0a918333c3"
        },
        {
          "url": "https://git.kernel.org/stable/c/7cbb8f2750d91e64caff89e164ac8280bb80bedc"
        },
        {
          "url": "https://git.kernel.org/stable/c/a8759c8ac48c0419f5899e95a6ffc611b07c965b"
        }
      ],
      "title": "PCI: altera: Protect root bus removal with rescan lock",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93821",
    "datePublished": "2026-09-24T16:02:59.826Z",
    "dateReserved": "2026-09-18T17:59:28.791Z",
    "dateUpdated": "2026-10-03T10:57:52.467Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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