CVE-2023-53446 (GCVE-0-2023-53446)

Vulnerability from cvelistv5 – Published: 2025-09-18 16:04 – Updated: 2026-05-11 19:45
VLAI
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: PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free Struct pcie_link_state->downstream is a pointer to the pci_dev of function 0. Previously we retained that pointer when removing function 0, and subsequent ASPM policy changes dereferenced it, resulting in a use-after-free warning from KASAN, e.g.: # echo 1 > /sys/bus/pci/devices/0000:03:00.0/remove # echo powersave > /sys/module/pcie_aspm/parameters/policy BUG: KASAN: slab-use-after-free in pcie_config_aspm_link+0x42d/0x500 Call Trace: kasan_report+0xae/0xe0 pcie_config_aspm_link+0x42d/0x500 pcie_aspm_set_policy+0x8e/0x1a0 param_attr_store+0x162/0x2c0 module_attr_store+0x3e/0x80 PCIe spec r6.0, sec 7.5.3.7, recommends that software program the same ASPM Control value in all functions of multi-function devices. Disable ASPM and free the pcie_link_state when any child function is removed so we can discard the dangling pcie_link_state->downstream pointer and maintain the same ASPM Control configuration for all functions. [bhelgaas: commit log and comment]
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-14 19:19 UTC
CWE
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 666e7f9d60cee23077ea3e6331f6f8a19f7ea03f (git)
Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 7badf4d6f49a358a01ab072bbff88d3ee886c33b (git)
Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 9856c0de49052174ab474113f4ba40c02aaee086 (git)
Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 7aecdd47910c51707696e8b0e045b9f88bd4230f (git)
Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < d51d2eeae4ce54d542909c4d9d07bf371a78592c (git)
Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 4203722d51afe3d239e03f15cc73efdf023a7103 (git)
Affected: b5a0a9b59c8185aebcd9a717e2e6258b58c72c06 , < 456d8aa37d0f56fc9e985e812496e861dcd6f2f2 (git)
guessed Create a notification for this product.
Linux Linux Affected: 4.11
Unaffected: 0 , < 4.11 (semver)
Unaffected: 5.4.251 , ≤ 5.4.* (semver)
Unaffected: 5.10.188 , ≤ 5.10.* (semver)
Unaffected: 5.15.121 , ≤ 5.15.* (semver)
Unaffected: 6.1.39 , ≤ 6.1.* (semver)
Unaffected: 6.3.13 , ≤ 6.3.* (semver)
Unaffected: 6.4.4 , ≤ 6.4.* (semver)
Unaffected: 6.5 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-53446",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T19:19:38.678315Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-416",
                "description": "CWE-416 Use After Free",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-14T19:23:11.720Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/pcie/aspm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "666e7f9d60cee23077ea3e6331f6f8a19f7ea03f",
              "status": "affected",
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "versionType": "git"
            },
            {
              "lessThan": "7badf4d6f49a358a01ab072bbff88d3ee886c33b",
              "status": "affected",
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "versionType": "git"
            },
            {
              "lessThan": "9856c0de49052174ab474113f4ba40c02aaee086",
              "status": "affected",
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "versionType": "git"
            },
            {
              "lessThan": "7aecdd47910c51707696e8b0e045b9f88bd4230f",
              "status": "affected",
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "versionType": "git"
            },
            {
              "lessThan": "d51d2eeae4ce54d542909c4d9d07bf371a78592c",
              "status": "affected",
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "versionType": "git"
            },
            {
              "lessThan": "4203722d51afe3d239e03f15cc73efdf023a7103",
              "status": "affected",
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "versionType": "git"
            },
            {
              "lessThan": "456d8aa37d0f56fc9e985e812496e861dcd6f2f2",
              "status": "affected",
              "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/pcie/aspm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.11"
            },
            {
              "lessThan": "4.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.251",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.121",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.39",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.3.*",
              "status": "unaffected",
              "version": "6.3.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.4.*",
              "status": "unaffected",
              "version": "6.4.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.5",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.4.251",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.188",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.121",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.39",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.3.13",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.4.4",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.5",
                  "versionStartIncluding": "4.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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-\u003edownstream 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 \u003e /sys/bus/pci/devices/0000:03:00.0/remove\n  # echo powersave \u003e /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-\u003edownstream pointer\nand maintain the same ASPM Control configuration for all functions.\n\n[bhelgaas: commit log and comment]"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:45:09.783Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/666e7f9d60cee23077ea3e6331f6f8a19f7ea03f"
        },
        {
          "url": "https://git.kernel.org/stable/c/7badf4d6f49a358a01ab072bbff88d3ee886c33b"
        },
        {
          "url": "https://git.kernel.org/stable/c/9856c0de49052174ab474113f4ba40c02aaee086"
        },
        {
          "url": "https://git.kernel.org/stable/c/7aecdd47910c51707696e8b0e045b9f88bd4230f"
        },
        {
          "url": "https://git.kernel.org/stable/c/d51d2eeae4ce54d542909c4d9d07bf371a78592c"
        },
        {
          "url": "https://git.kernel.org/stable/c/4203722d51afe3d239e03f15cc73efdf023a7103"
        },
        {
          "url": "https://git.kernel.org/stable/c/456d8aa37d0f56fc9e985e812496e861dcd6f2f2"
        }
      ],
      "title": "PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53446",
    "datePublished": "2025-09-18T16:04:21.939Z",
    "dateReserved": "2025-09-17T14:54:09.753Z",
    "dateUpdated": "2026-05-11T19:45:09.783Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-53446",
      "date": "2026-10-30",
      "epss": "0.00152",
      "percentile": "0.04368"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/pci/pcie/aspm.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "666e7f9d60cee23077ea3e6331f6f8a19f7ea03f",
                    "status": "affected",
                    "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "7badf4d6f49a358a01ab072bbff88d3ee886c33b",
                    "status": "affected",
                    "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "9856c0de49052174ab474113f4ba40c02aaee086",
                    "status": "affected",
                    "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "7aecdd47910c51707696e8b0e045b9f88bd4230f",
                    "status": "affected",
                    "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "d51d2eeae4ce54d542909c4d9d07bf371a78592c",
                    "status": "affected",
                    "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "4203722d51afe3d239e03f15cc73efdf023a7103",
                    "status": "affected",
                    "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "456d8aa37d0f56fc9e985e812496e861dcd6f2f2",
                    "status": "affected",
                    "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/pci/pcie/aspm.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "4.11"
                  },
                  {
                    "lessThan": "4.11",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.4.*",
                    "status": "unaffected",
                    "version": "5.4.251",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.188",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.121",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.39",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.3.*",
                    "status": "unaffected",
                    "version": "6.3.13",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.4.*",
                    "status": "unaffected",
                    "version": "6.4.4",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "6.5",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "2379FC6F-4DA2-43DA-AF1D-FC188CB1FB6B",
                    "versionEndExcluding": "5.4.251",
                    "versionStartIncluding": "4.11",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "43CAE50A-4A6C-488E-813C-F8DB77C13C8B",
                    "versionEndExcluding": "5.10.188",
                    "versionStartIncluding": "5.5",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "EC77775B-EC31-4966-966C-1286C02B2A85",
                    "versionEndExcluding": "5.15.121",
                    "versionStartIncluding": "5.11",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "9BD1D4A1-304D-4187-8178-6D7C0050B1AF",
                    "versionEndExcluding": "6.1.39",
                    "versionStartIncluding": "5.16",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "95CB4836-7F5D-4C20-B025-8E046EC87B78",
                    "versionEndExcluding": "6.3.13",
                    "versionStartIncluding": "6.2",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "6AB81046-CB69-4115-924C-963B37C41385",
                    "versionEndExcluding": "6.4.4",
                    "versionStartIncluding": "6.4",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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-\u003edownstream 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 \u003e /sys/bus/pci/devices/0000:03:00.0/remove\n  # echo powersave \u003e /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-\u003edownstream pointer\nand maintain the same ASPM Control configuration for all functions.\n\n[bhelgaas: commit log and comment]"
          }
        ],
        "id": "CVE-2023-53446",
        "lastModified": "2026-06-17T06:45:21.683",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            },
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 7.8,
                "baseSeverity": "HIGH",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 5.9,
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2023-53446",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-14T19:19:38.678315Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2025-09-18T16:15:48.940",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/4203722d51afe3d239e03f15cc73efdf023a7103"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/456d8aa37d0f56fc9e985e812496e861dcd6f2f2"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/666e7f9d60cee23077ea3e6331f6f8a19f7ea03f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7aecdd47910c51707696e8b0e045b9f88bd4230f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/7badf4d6f49a358a01ab072bbff88d3ee886c33b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/9856c0de49052174ab474113f4ba40c02aaee086"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/d51d2eeae4ce54d542909c4d9d07bf371a78592c"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          },
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-416"
              }
            ],
            "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T22:23:11+00:00",
      "cve": "CVE-2023-53446",
      "id": "CVE-2023-53446",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "170",
      "product_status:known_not_affected": "104",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-53446.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "cvssV3_1": {
                  "attackComplexity": "LOW",
                  "attackVector": "LOCAL",
                  "availabilityImpact": "HIGH",
                  "baseScore": 7.8,
                  "baseSeverity": "HIGH",
                  "confidentialityImpact": "HIGH",
                  "integrityImpact": "HIGH",
                  "privilegesRequired": "LOW",
                  "scope": "UNCHANGED",
                  "userInteraction": "NONE",
                  "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "version": "3.1"
                }
              },
              {
                "other": {
                  "content": {
                    "id": "CVE-2023-53446",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-01-14T19:19:38.678315Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "problemTypes": [
              {
                "descriptions": [
                  {
                    "cweId": "CWE-416",
                    "description": "CWE-416 Use After Free",
                    "lang": "en",
                    "type": "CWE"
                  }
                ]
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-01-14T19:19:33.416Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "drivers/pci/pcie/aspm.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "666e7f9d60cee23077ea3e6331f6f8a19f7ea03f",
                  "status": "affected",
                  "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                  "versionType": "git"
                },
                {
                  "lessThan": "7badf4d6f49a358a01ab072bbff88d3ee886c33b",
                  "status": "affected",
                  "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                  "versionType": "git"
                },
                {
                  "lessThan": "9856c0de49052174ab474113f4ba40c02aaee086",
                  "status": "affected",
                  "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                  "versionType": "git"
                },
                {
                  "lessThan": "7aecdd47910c51707696e8b0e045b9f88bd4230f",
                  "status": "affected",
                  "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                  "versionType": "git"
                },
                {
                  "lessThan": "d51d2eeae4ce54d542909c4d9d07bf371a78592c",
                  "status": "affected",
                  "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                  "versionType": "git"
                },
                {
                  "lessThan": "4203722d51afe3d239e03f15cc73efdf023a7103",
                  "status": "affected",
                  "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                  "versionType": "git"
                },
                {
                  "lessThan": "456d8aa37d0f56fc9e985e812496e861dcd6f2f2",
                  "status": "affected",
                  "version": "b5a0a9b59c8185aebcd9a717e2e6258b58c72c06",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "drivers/pci/pcie/aspm.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "4.11"
                },
                {
                  "lessThan": "4.11",
                  "status": "unaffected",
                  "version": "0",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.4.*",
                  "status": "unaffected",
                  "version": "5.4.251",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.10.*",
                  "status": "unaffected",
                  "version": "5.10.188",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "5.15.*",
                  "status": "unaffected",
                  "version": "5.15.121",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.1.*",
                  "status": "unaffected",
                  "version": "6.1.39",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.3.*",
                  "status": "unaffected",
                  "version": "6.3.13",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "6.4.*",
                  "status": "unaffected",
                  "version": "6.4.4",
                  "versionType": "semver"
                },
                {
                  "lessThanOrEqual": "*",
                  "status": "unaffected",
                  "version": "6.5",
                  "versionType": "original_commit_for_fix"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.251",
                      "versionStartIncluding": "4.11",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.188",
                      "versionStartIncluding": "4.11",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.121",
                      "versionStartIncluding": "4.11",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.39",
                      "versionStartIncluding": "4.11",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.3.13",
                      "versionStartIncluding": "4.11",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.4.4",
                      "versionStartIncluding": "4.11",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.5",
                      "versionStartIncluding": "4.11",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "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-\u003edownstream 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 \u003e /sys/bus/pci/devices/0000:03:00.0/remove\n  # echo powersave \u003e /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-\u003edownstream pointer\nand maintain the same ASPM Control configuration for all functions.\n\n[bhelgaas: commit log and comment]"
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T19:45:09.783Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/666e7f9d60cee23077ea3e6331f6f8a19f7ea03f"
            },
            {
              "url": "https://git.kernel.org/stable/c/7badf4d6f49a358a01ab072bbff88d3ee886c33b"
            },
            {
              "url": "https://git.kernel.org/stable/c/9856c0de49052174ab474113f4ba40c02aaee086"
            },
            {
              "url": "https://git.kernel.org/stable/c/7aecdd47910c51707696e8b0e045b9f88bd4230f"
            },
            {
              "url": "https://git.kernel.org/stable/c/d51d2eeae4ce54d542909c4d9d07bf371a78592c"
            },
            {
              "url": "https://git.kernel.org/stable/c/4203722d51afe3d239e03f15cc73efdf023a7103"
            },
            {
              "url": "https://git.kernel.org/stable/c/456d8aa37d0f56fc9e985e812496e861dcd6f2f2"
            }
          ],
          "title": "PCI/ASPM: Disable ASPM on MFD function removal to avoid use-after-free",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2023-53446",
        "datePublished": "2025-09-18T16:04:21.939Z",
        "dateReserved": "2025-09-17T14:54:09.753Z",
        "dateUpdated": "2026-05-11T19:45:09.783Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.