« Volver al listado

CVE-2024-47743

Estado: ModificadaMedia (5.5)—

In the Linux kernel, the following vulnerability has been resolved:

KEYS: prevent NULL pointer dereference in find_asymmetric_key()

In find_asymmetric_key(), if all NULLs are passed in the id_{0,1,2} arguments, the kernel will first emit WARN but then have an oops because id_2 gets dereferenced anyway.

Add the missing id_2 check and move WARN_ON() to the final else branch to avoid duplicate NULL checks.

Found by Linux Verification Center (linuxtesting.org) with Svace static analysis tool.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2024-47743",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-47743",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-21T12:58:56.209063Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360",
              "lessThan": "3322fa8f2aa40b0b3651034cd541647a600cc6c0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360",
              "lessThan": "a3765b497a4f5224cb2f7a6a2d3357d3066214ee",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360",
              "lessThan": "13b5b401ead95b5d8266f64904086c55b6024900",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360",
              "lessThan": "0d3b0706ada15c333e6f9faf19590ff715e45d1e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7d30198ee24f2ddcc4fefcd38a9b76bd8ab31360",
              "lessThan": "70fd1966c93bf3bfe3fe6d753eb3d83a76597eef",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "crypto/asymmetric_keys/asymmetric_type.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.17"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.17",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.1.113",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.54",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.10.13",
              "versionType": "semver",
              "lessThanOrEqual": "6.10.*"
            },
            {
              "status": "unaffected",
              "version": "6.11.2",
              "versionType": "semver",
              "lessThanOrEqual": "6.11.*"
            },
            {
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "crypto/asymmetric_keys/asymmetric_type.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2024-10-21T13:15:04.393",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0d3b0706ada15c333e6f9faf19590ff715e45d1e",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/13b5b401ead95b5d8266f64904086c55b6024900",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3322fa8f2aa40b0b3651034cd541647a600cc6c0",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/70fd1966c93bf3bfe3fe6d753eb3d83a76597eef",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a3765b497a4f5224cb2f7a6a2d3357d3066214ee",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nKEYS: prevent NULL pointer dereference in find_asymmetric_key()\n\nIn find_asymmetric_key(), if all NULLs are passed in the id_{0,1,2}\narguments, the kernel will first emit WARN but then have an oops\nbecause id_2 gets dereferenced anyway.\n\nAdd the missing id_2 check and move WARN_ON() to the final else branch\nto avoid duplicate NULL checks.\n\nFound by Linux Verification Center (linuxtesting.org) with Svace static\nanalysis tool."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: KEYS: evitar la desreferenciación de puntero NULL en find_ametric_key() En find_ametric_key(), si se pasan todos los NULL en los argumentos id_{0,1,2}, el kernel primero emitirá WARN pero luego tendrá un error porque id_2 se desreferencia de todos modos. Agregue la comprobación id_2 faltante y mueva WARN_ON() a la rama else final para evitar comprobaciones NULL duplicadas. Encontrado por Linux Verification Center (linuxtesting.org) con la herramienta de análisis estático Svace."
    }
  ],
  "lastModified": "2026-06-17T07:57:40.270",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "09358D68-A717-469E-B900-8002A642E29A",
              "versionEndExcluding": "6.1.113",
              "versionStartIncluding": "5.17"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "D448821D-C085-4CAF-88FA-2DDE7BE21976",
              "versionEndExcluding": "6.6.54",
              "versionStartIncluding": "6.2"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CE94BB8D-B0AB-4563-9ED7-A12122B56EBE",
              "versionEndExcluding": "6.10.13",
              "versionStartIncluding": "6.7"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AB755D26-97F4-43B6-8604-CD076811E181",
              "versionEndExcluding": "6.11.2",
              "versionStartIncluding": "6.11"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}