FKIE_CVE-2024-41091

Vulnerability from fkie_nvd - Published: 2024-07-29 07:15 - Updated: 2026-06-17 07:47
Severity
7.1 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: tun: add missing verification for short frame The cited commit missed to check against the validity of the frame length in the tun_xdp_one() path, which could cause a corrupted skb to be sent downstack. Even before the skb is transmitted, the tun_xdp_one-->eth_type_trans() may access the Ethernet header although it can be less than ETH_HLEN. Once transmitted, this could either cause out-of-bound access beyond the actual length, or confuse the underlayer with incorrect or inconsistent header length in the skb metadata. In the alternative path, tun_get_user() already prohibits short frame which has the length less than Ethernet header size from being transmitted for IFF_TAP. This is to drop any frame shorter than the Ethernet header size just like how tun_get_user() does. CVE: CVE-2024-41091
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/049584807f1d797fc3078b68035450a9769eb5c3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/32b0aaba5dbc85816898167d9b5d45a22eae82e9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6100e0237204890269e3f934acfc50d35fd6f319Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8418f55302fa1d2eeb73e16e345167e545c598a5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a9d1c27e2ee3b0ea5d40c105d6e728fc114470bbPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d5ad89b7d01ed4e66fd04734fc63d6e78536692aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/049584807f1d797fc3078b68035450a9769eb5c3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/32b0aaba5dbc85816898167d9b5d45a22eae82e9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/589382f50b4a5d90d16d8bc9dcbc0e927a3e39b2Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/6100e0237204890269e3f934acfc50d35fd6f319Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/8418f55302fa1d2eeb73e16e345167e545c598a5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/a9d1c27e2ee3b0ea5d40c105d6e728fc114470bbPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ad6b3f622ccfb4bfedfa53b6ebd91c3d1d04f146Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d5ad89b7d01ed4e66fd04734fc63d6e78536692aPatch
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/net/tun.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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            },
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              "versionType": "git"
            },
            {
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              "version": "043d222f93ab8c76b56a3b315cd8692e35affb6c",
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            },
            {
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/tun.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.20"
            },
            {
              "lessThan": "4.20",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "5.4.281",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.223",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.164",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.102",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.43",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.9.*",
              "status": "unaffected",
              "version": "6.9.12",
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            },
            {
              "lessThanOrEqual": "6.10.*",
              "status": "unaffected",
              "version": "6.10.2",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.11",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
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          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ntun: add missing verification for short frame\n\nThe cited commit missed to check against the validity of the frame length\nin the tun_xdp_one() path, which could cause a corrupted skb to be sent\ndownstack. Even before the skb is transmitted, the\ntun_xdp_one--\u003eeth_type_trans() may access the Ethernet header although it\ncan be less than ETH_HLEN. Once transmitted, this could either cause\nout-of-bound access beyond the actual length, or confuse the underlayer\nwith incorrect or inconsistent header length in the skb metadata.\n\nIn the alternative path, tun_get_user() already prohibits short frame which\nhas the length less than Ethernet header size from being transmitted for\nIFF_TAP.\n\nThis is to drop any frame shorter than the Ethernet header size just like\nhow tun_get_user() does.\n\nCVE: CVE-2024-41091"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: tun: agrega verificaci\u00f3n faltante para marcos cortos La confirmaci\u00f3n citada no pudo verificar la validez de la longitud del marco en la ruta tun_xdp_one(), lo que podr\u00eda provocar que un skb da\u00f1ado se env\u00ede hacia abajo. Incluso antes de que se transmita el skb, tun_xdp_one--\u0026gt;eth_type_trans() puede acceder al encabezado de Ethernet aunque puede ser menor que ETH_HLEN. Una vez transmitido, esto podr\u00eda provocar un acceso fuera de los l\u00edmites m\u00e1s all\u00e1 de la longitud real o confundir la capa subyacente con una longitud de encabezado incorrecta o inconsistente en los metadatos de skb. En la ruta alternativa, tun_get_user() ya proh\u00edbe la transmisi\u00f3n de tramas cortas que tengan una longitud menor que el tama\u00f1o del encabezado Ethernet para IFF_TAP. Esto es para eliminar cualquier trama m\u00e1s corta que el tama\u00f1o del encabezado de Ethernet tal como lo hace tun_get_user(). CVE: CVE-2024-41091"
    }
  ],
  "id": "CVE-2024-41091",
  "lastModified": "2026-06-17T07:47:15.907",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.2,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-41091",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-09-10T16:24:56.109252Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-07-29T07:15:07.553",
  "references": [
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    },
    {
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  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        }
      ],
      "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

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.