FKIE_CVE-2024-46761

Vulnerability from fkie_nvd - Published: 2024-09-18 08:15 - Updated: 2026-06-17 07:55
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv The hotplug driver for powerpc (pci/hotplug/pnv_php.c) causes a kernel crash when we try to hot-unplug/disable the PCIe switch/bridge from the PHB. The crash occurs because although the MSI data structure has been released during disable/hot-unplug path and it has been assigned with NULL, still during unregistration the code was again trying to explicitly disable the MSI which causes the NULL pointer dereference and kernel crash. The patch fixes the check during unregistration path to prevent invoking pci_disable_msi/msix() since its data structure is already freed.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/335e35b748527f0c06ded9eebb65387f60647fdaPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/438d522227374042b5c8798f8ce83bbe479dca4dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4eb4085c1346d19d4a05c55246eb93e74e671048Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b82d4d5c736f4fd2ed224c35f554f50d1953d21ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bc1faed19db95abf0933b104910a3fb01b138f59Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/bfc44075b19740d372f989f21dd03168bfda0689Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c0d8094dc740cfacf3775bbc6a1c4720459e8de4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c4c681999d385e28f84808bbf3a85ea8e982da55Patch
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/hotplug/pnv_php.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "status": "affected",
              "version": "49f4b08e61547a5ccd2db551d994c4503efe5666",
              "versionType": "git"
            },
            {
              "lessThan": "c4c681999d385e28f84808bbf3a85ea8e982da55",
              "status": "affected",
              "version": "49f4b08e61547a5ccd2db551d994c4503efe5666",
              "versionType": "git"
            },
            {
              "lessThan": "bc1faed19db95abf0933b104910a3fb01b138f59",
              "status": "affected",
              "version": "49f4b08e61547a5ccd2db551d994c4503efe5666",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "49f4b08e61547a5ccd2db551d994c4503efe5666",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "49f4b08e61547a5ccd2db551d994c4503efe5666",
              "versionType": "git"
            },
            {
              "lessThan": "b82d4d5c736f4fd2ed224c35f554f50d1953d21e",
              "status": "affected",
              "version": "49f4b08e61547a5ccd2db551d994c4503efe5666",
              "versionType": "git"
            },
            {
              "lessThan": "bfc44075b19740d372f989f21dd03168bfda0689",
              "status": "affected",
              "version": "49f4b08e61547a5ccd2db551d994c4503efe5666",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "49f4b08e61547a5ccd2db551d994c4503efe5666",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "1fb738a3dc1304250c755e5e31715137c1c44c50",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "bc4c9766324a7e9fda48de58691796430c8511bf",
              "versionType": "git"
            },
            {
              "lessThan": "4.10",
              "status": "affected",
              "version": "4.9.14",
              "versionType": "semver"
            },
            {
              "lessThan": "4.11",
              "status": "affected",
              "version": "4.10.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/hotplug/pnv_php.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": "4.19.*",
              "status": "unaffected",
              "version": "4.19.322",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.284",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.226",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.167",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "29162FB8-5FA4-4DC4-86CE-5EB0CAEEF2F3",
              "versionEndExcluding": "4.19.322",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6265A402-9C3C-438F-BFC5-4194B2568B85",
              "versionEndExcluding": "5.4.284",
              "versionStartIncluding": "4.20",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "864FC17C-501A-4823-A643-6F35D65D8A97",
              "versionEndExcluding": "5.10.226",
              "versionStartIncluding": "5.5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "043405A4-25FE-45D4-A7BB-2A0C3B7D17C1",
              "versionEndExcluding": "5.15.167",
              "versionStartIncluding": "5.11",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "6B1A95FC-7E7E-428B-BB59-F76640C652AE",
              "versionEndExcluding": "6.1.110",
              "versionStartIncluding": "5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E4529134-BAC4-4776-840B-304009E181A0",
              "versionEndExcluding": "6.6.51",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "ACDEE48C-137A-4731-90D0-A675865E1BED",
              "versionEndExcluding": "6.10.10",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npci/hotplug/pnv_php: Fix hotplug driver crash on Powernv\n\nThe hotplug driver for powerpc (pci/hotplug/pnv_php.c) causes a kernel\ncrash when we try to hot-unplug/disable the PCIe switch/bridge from\nthe PHB.\n\nThe crash occurs because although the MSI data structure has been\nreleased during disable/hot-unplug path and it has been assigned\nwith NULL, still during unregistration the code was again trying to\nexplicitly disable the MSI which causes the NULL pointer dereference and\nkernel crash.\n\nThe patch fixes the check during unregistration path to prevent invoking\npci_disable_msi/msix() since its data structure is already freed."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: pci/hotplug/pnv_php: Se soluciona el fallo del controlador hotplug en Powernv El controlador hotplug para powerpc (pci/hotplug/pnv_php.c) provoca un fallo del kernel cuando intentamos desconectar/deshabilitar en caliente el conmutador/puente PCIe del PHB. El fallo se produce porque, aunque la estructura de datos MSI se ha liberado durante la ruta de deshabilitaci\u00f3n/desconexi\u00f3n en caliente y se le ha asignado NULL, a\u00fan durante la anulaci\u00f3n del registro el c\u00f3digo estaba intentando de nuevo deshabilitar expl\u00edcitamente el MSI, lo que provoca la desreferencia del puntero NULL y el fallo del kernel. El parche corrige la comprobaci\u00f3n durante la ruta de anulaci\u00f3n del registro para evitar invocar pci_disable_msi/msix() ya que su estructura de datos ya est\u00e1 liberada."
    }
  ],
  "id": "CVE-2024-46761",
  "lastModified": "2026-06-17T07:55:52.727",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-46761",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-29T14:43:48.967345Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-09-18T08:15:04.517",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/335e35b748527f0c06ded9eebb65387f60647fda"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/438d522227374042b5c8798f8ce83bbe479dca4d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/4eb4085c1346d19d4a05c55246eb93e74e671048"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b82d4d5c736f4fd2ed224c35f554f50d1953d21e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/bc1faed19db95abf0933b104910a3fb01b138f59"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/bfc44075b19740d372f989f21dd03168bfda0689"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c0d8094dc740cfacf3775bbc6a1c4720459e8de4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/c4c681999d385e28f84808bbf3a85ea8e982da55"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • 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.
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  • 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.



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