fkie_cve-2021-47602
Vulnerability from fkie_nvd
Published
2024-06-19 15:15
Modified
2024-11-21 06:36
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: mac80211: track only QoS data frames for admission control For admission control, obviously all of that only works for QoS data frames, otherwise we cannot even access the QoS field in the header. Syzbot reported (see below) an uninitialized value here due to a status of a non-QoS nullfunc packet, which isn't even long enough to contain the QoS header. Fix this to only do anything for QoS data packets.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387bPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625fPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/42d08e97b196479f593499e887a9ab81446a34b9Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/46b9e29db2012a4d2a40a26101862e002ccf387bPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/69f054d6642c8f6173724ce17e7ee3ff66b8f682Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d5e568c3a4ec2ddd23e7dc5ad5b0c64e4f22981aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/eed897a22230e3231a740eddd7d6d95ba476625fPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.16
linux linux_kernel 5.16
linux linux_kernel 5.16
linux linux_kernel 5.16
linux linux_kernel 5.16


To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmac80211: track only QoS data frames for admission control\n\nFor admission control, obviously all of that only works for\nQoS data frames, otherwise we cannot even access the QoS\nfield in the header.\n\nSyzbot reported (see below) an uninitialized value here due\nto a status of a non-QoS nullfunc packet, which isn\u0027t even\nlong enough to contain the QoS header.\n\nFix this to only do anything for QoS data packets."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: mac80211: rastrea solo frameworks de datos QoS para control de admisi\u00f3n. Para el control de admisi\u00f3n, obviamente todo eso solo funciona para frameworks de datos QoS; de lo contrario, ni siquiera podemos acceder al campo QoS en el encabezado. Syzbot inform\u00f3 (ver m\u00e1s abajo) un valor no inicializado aqu\u00ed debido al estado de un paquete nullfunc sin QoS, que ni siquiera es lo suficientemente largo para contener el encabezado de QoS. Solucione este problema para hacer algo \u00fanicamente con los paquetes de datos QoS."
    }
  ],
  "id": "CVE-2021-47602",
  "lastModified": "2024-11-21T06:36:38.737",
  "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"
      }
    ]
  },
  "published": "2024-06-19T15:15:54.760",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-824"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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