{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2023-53446",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2023-53446",
    "idYear": 2023,
    "status": "PUBLISHED",
    "publishedAt": "2025-09-18T16:04:21.939Z",
    "updatedAt": "2026-05-11T19:45:09.783Z",
    "importedAt": "2026-10-24T01:57:03.413Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free\n\nStruct pcie_link_state->downstream is a pointer to the pci_dev of function\n0.  Previously we retained that pointer when removing function 0, and\nsubsequent ASPM policy changes dereferenced it, resulting in a\nuse-after-free warning from KASAN, e.g.:\n\n  # echo 1 > /sys/bus/pci/devices/0000:03:00.0/remove\n  # echo powersave > /sys/module/pcie_aspm/parameters/policy\n\n  BUG: KASAN: slab-use-after-free in pcie_config_aspm_link+0x42d/0x500\n  Call Trace:\n   kasan_report+0xae/0xe0\n   pcie_config_aspm_link+0x42d/0x500\n   pcie_aspm_set_policy+0x8e/0x1a0\n   param_attr_store+0x162/0x2c0\n   module_attr_store+0x3e/0x80\n\nPCIe spec r6.0, sec 7.5.3.7, recommends that software program the same ASPM\nControl value in all functions of multi-function devices.\n\nDisable ASPM and free the pcie_link_state when any child function is\nremoved so we can discard the dangling pcie_link_state->downstream pointer\nand maintain the same ASPM Control configuration for all functions.\n\n[bhelgaas: commit log and comment]",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "status": "affected",
              "versionType": "git",
              "lessThan": "666e7f9d60cee23077ea3e6331f6f8a19f7ea03f"
            },
            {
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7badf4d6f49a358a01ab072bbff88d3ee886c33b"
            },
            {
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9856c0de49052174ab474113f4ba40c02aaee086"
            },
            {
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7aecdd47910c51707696e8b0e045b9f88bd4230f"
            },
            {
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d51d2eeae4ce54d542909c4d9d07bf371a78592c"
            },
            {
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4203722d51afe3d239e03f15cc73efdf023a7103"
            },
            {
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "status": "affected",
              "versionType": "git",
              "lessThan": "456d8aa37d0f56fc9e985e812496e861dcd6f2f2"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.11",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.11"
            },
            {
              "version": "5.4.251",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.188",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.121",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.39",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.3.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.3.*"
            },
            {
              "version": "6.4.4",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.4.*"
            },
            {
              "version": "6.5",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}