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FKIE_CVE-2024-35827

Vulnerability from fkie_nvd - Published: 2024-05-17 14:15 - Updated: 2026-08-04 11:17
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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: io_uring/net: fix overflow check in io_recvmsg_mshot_prep() The "controllen" variable is type size_t (unsigned long). Casting it to int could lead to an integer underflow. The check_add_overflow() function considers the type of the destination which is type int. If we add two positive values and the result cannot fit in an integer then that's counted as an overflow. However, if we cast "controllen" to an int and it turns negative, then negative values *can* fit into an int type so there is no overflow. Good: 100 + (unsigned long)-4 = 96 <-- overflow Bad: 100 + (int)-4 = 96 <-- no overflow I deleted the cast of the sizeof() as well. That's not a bug but the cast is unnecessary.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0c8c74bb59e7d77554016efc34c2d10376985e5ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/59a534690ecc3af72c6ab121aeac1237a4adae66Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/868ec868616438df487b9e2baa5a99f8662cc47cPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8ede3db5061bb1fe28e2c9683329aafa89d2b1b4Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b6563ad0d599110bd5cf8f56c47d279c3ed796fePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/0c8c74bb59e7d77554016efc34c2d10376985e5ePatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/59a534690ecc3af72c6ab121aeac1237a4adae66Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/868ec868616438df487b9e2baa5a99f8662cc47cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8ede3db5061bb1fe28e2c9683329aafa89d2b1b4Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/b6563ad0d599110bd5cf8f56c47d279c3ed796fePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "io_uring/net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "868ec868616438df487b9e2baa5a99f8662cc47c",
              "status": "affected",
              "version": "9b0fc3c054ff2eb13753104884f1045b5bb3a627",
              "versionType": "git"
            },
            {
              "lessThan": "59a534690ecc3af72c6ab121aeac1237a4adae66",
              "status": "affected",
              "version": "9b0fc3c054ff2eb13753104884f1045b5bb3a627",
              "versionType": "git"
            },
            {
              "lessThan": "0c8c74bb59e7d77554016efc34c2d10376985e5e",
              "status": "affected",
              "version": "9b0fc3c054ff2eb13753104884f1045b5bb3a627",
              "versionType": "git"
            },
            {
              "lessThan": "b6563ad0d599110bd5cf8f56c47d279c3ed796fe",
              "status": "affected",
              "version": "9b0fc3c054ff2eb13753104884f1045b5bb3a627",
              "versionType": "git"
            },
            {
              "lessThan": "8ede3db5061bb1fe28e2c9683329aafa89d2b1b4",
              "status": "affected",
              "version": "9b0fc3c054ff2eb13753104884f1045b5bb3a627",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "io_uring/net.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.23",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.7.*",
              "status": "unaffected",
              "version": "6.7.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.8.*",
              "status": "unaffected",
              "version": "6.8.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.9",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A32E0BAB-1526-4AF3-8BD5-C68B497F3C47",
              "versionEndExcluding": "6.1.83",
              "versionStartIncluding": "6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E00814DC-0BA7-431A-9926-80FEB4A96C68",
              "versionEndExcluding": "6.6.23",
              "versionStartIncluding": "6.2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "9B95D3A6-E162-47D5-ABFC-F3FA74FA7CFD",
              "versionEndExcluding": "6.7.11",
              "versionStartIncluding": "6.7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "543A75FF-25B8-4046-A514-1EA8EDD87AB1",
              "versionEndExcluding": "6.8.2",
              "versionStartIncluding": "6.8",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring/net: fix overflow check in io_recvmsg_mshot_prep()\n\nThe \"controllen\" variable is type size_t (unsigned long).  Casting it\nto int could lead to an integer underflow.\n\nThe check_add_overflow() function considers the type of the destination\nwhich is type int.  If we add two positive values and the result cannot\nfit in an integer then that\u0027s counted as an overflow.\n\nHowever, if we cast \"controllen\" to an int and it turns negative, then\nnegative values *can* fit into an int type so there is no overflow.\n\nGood: 100 + (unsigned long)-4 = 96  \u003c-- overflow\n Bad: 100 + (int)-4 = 96 \u003c-- no overflow\n\nI deleted the cast of the sizeof() as well.  That\u0027s not a bug but the\ncast is unnecessary."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: io_uring/net: corregida la comprobaci\u00f3n de desbordamiento en io_recvmsg_mshot_prep() La variable \"controllen\" es de tipo size_t (largo sin firmar). Convertirlo a int podr\u00eda provocar un desbordamiento de n\u00fameros enteros. La funci\u00f3n check_add_overflow() considera el tipo de destino que es de tipo int. Si sumamos dos valores positivos y el resultado no cabe en un n\u00famero entero, entonces se cuenta como un desbordamiento. Sin embargo, si convertimos \"controllen\" en un int y se vuelve negativo, entonces los valores negativos *pueden* caber en un tipo int para que no haya desbordamiento. Bueno: 100 + (unsigned long)-4 = 96 \u0026lt;-- overflow Malo: 100 + (int)-4 = 96 \u0026lt;-- no overflow Tambi\u00e9n elimin\u00e9 el cast de sizeof(). Eso no es un error, pero el cast es innecesario."
    }
  ],
  "id": "CVE-2024-35827",
  "lastModified": "2026-08-04T11:17:56.653",
  "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": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      },
      {
        "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-2024-35827",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-05-17T15:12:59.146861Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-05-17T14:15:18.670",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0c8c74bb59e7d77554016efc34c2d10376985e5e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/59a534690ecc3af72c6ab121aeac1237a4adae66"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/868ec868616438df487b9e2baa5a99f8662cc47c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8ede3db5061bb1fe28e2c9683329aafa89d2b1b4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b6563ad0d599110bd5cf8f56c47d279c3ed796fe"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/0c8c74bb59e7d77554016efc34c2d10376985e5e"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/59a534690ecc3af72c6ab121aeac1237a4adae66"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/868ec868616438df487b9e2baa5a99f8662cc47c"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/8ede3db5061bb1fe28e2c9683329aafa89d2b1b4"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b6563ad0d599110bd5cf8f56c47d279c3ed796fe"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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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

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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.


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.