CVE-2024-46761 (GCVE-0-2024-46761)

Vulnerability from cvelistv5 – Published: 2024-09-18 07:12 – Updated: 2026-05-23 15:53
VLAI
Title
pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv
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.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-29 14:43 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 49f4b08e61547a5ccd2db551d994c4503efe5666 , < 4eb4085c1346d19d4a05c55246eb93e74e671048 (git)
Affected: 49f4b08e61547a5ccd2db551d994c4503efe5666 , < c4c681999d385e28f84808bbf3a85ea8e982da55 (git)
Affected: 49f4b08e61547a5ccd2db551d994c4503efe5666 , < bc1faed19db95abf0933b104910a3fb01b138f59 (git)
Affected: 49f4b08e61547a5ccd2db551d994c4503efe5666 , < c0d8094dc740cfacf3775bbc6a1c4720459e8de4 (git)
Affected: 49f4b08e61547a5ccd2db551d994c4503efe5666 , < 438d522227374042b5c8798f8ce83bbe479dca4d (git)
Affected: 49f4b08e61547a5ccd2db551d994c4503efe5666 , < b82d4d5c736f4fd2ed224c35f554f50d1953d21e (git)
Affected: 49f4b08e61547a5ccd2db551d994c4503efe5666 , < bfc44075b19740d372f989f21dd03168bfda0689 (git)
Affected: 49f4b08e61547a5ccd2db551d994c4503efe5666 , < 335e35b748527f0c06ded9eebb65387f60647fda (git)
Affected: 1fb738a3dc1304250c755e5e31715137c1c44c50 (git)
Affected: bc4c9766324a7e9fda48de58691796430c8511bf (git)
Affected: 4.9.14 , < 4.10 (semver)
Affected: 4.10.2 , < 4.11 (semver)
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Linux Linux Affected: 4.11
Unaffected: 0 , < 4.11 (semver)
Unaffected: 4.19.322 , ≤ 4.19.* (semver)
Unaffected: 5.4.284 , ≤ 5.4.* (semver)
Unaffected: 5.10.226 , ≤ 5.10.* (semver)
Unaffected: 5.15.167 , ≤ 5.15.* (semver)
Unaffected: 6.1.110 , ≤ 6.1.* (semver)
Unaffected: 6.6.51 , ≤ 6.6.* (semver)
Unaffected: 6.10.10 , ≤ 6.10.* (semver)
Unaffected: 6.11 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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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 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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-28T08:06:36+00:00",
      "cve": "CVE-2024-46761",
      "id": "CVE-2024-46761",
      "initial_release_date": "2024-09-18T00:00:00+00:00",
      "product_status:fixed": "305",
      "product_status:known_affected": "70",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: pci/hotplug/pnv_php: Fix hotplug driver crash on Powernv",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-46761.json",
      "version": "3"
    },
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freed.\"}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"4.19.322\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.4.284\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.10.226\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"5.15.167\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"6.1.110\", \"versionStartIncluding\": \"4.11\"}, {\"criteria\": \"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\", \"vulnerable\": true, 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      "cveMetadata": "{\"cveId\": \"CVE-2024-46761\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-05-23T15:53:31.338Z\", \"dateReserved\": \"2024-09-11T15:12:18.272Z\", \"assignerOrgId\": \"416baaa9-dc9f-4396-8d5f-8c081fb06d67\", \"datePublished\": \"2024-09-18T07:12:20.852Z\", \"assignerShortName\": \"Linux\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.