fkie_cve-2021-46991
Vulnerability from fkie_nvd
Published
2024-02-28 09:15
Modified
2024-12-06 15:27
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: i40e: Fix use-after-free in i40e_client_subtask() Currently the call to i40e_client_del_instance frees the object pf->cinst, however pf->cinst->lan_info is being accessed after the free. Fix this by adding the missing return. Addresses-Coverity: ("Read from pointer after free")
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1fd5d262e7442192ac7611ff1597a36c5b044323Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/38318f23a7ef86a8b1862e5e8078c4de121960c3Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4ebc10aa7cd17fd9857dedac69600465c9dd16d1Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/829a713450b8fb127cbabfc1244c1d8179ec5107Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/c1322eaeb8af0d8985b5cc5fa759140fa0e57b84Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d718c15a2bf9ae082d5ae4d177fb19ef23cb4132Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "matchCriteriaId": "F677F1C8-2451-43EC-9555-E283697C189E",
              "versionEndExcluding": "4.19.191",
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              "vulnerable": true
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          "negate": false,
          "operator": "OR"
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      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ni40e: Fix use-after-free in i40e_client_subtask()\n\nCurrently the call to i40e_client_del_instance frees the object\npf-\u003ecinst, however pf-\u003ecinst-\u003elan_info is being accessed after\nthe free. Fix this by adding the missing return.\n\nAddresses-Coverity: (\"Read from pointer after free\")"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: i40e: Se corrige use-after-free en i40e_client_subtask() Actualmente la llamada a i40e_client_del_instance libera el objeto pf-\u0026gt;cinst, sin embargo se accede a pf-\u0026gt;cinst-\u0026gt;lan_info despu\u00e9s de gratis. Solucione este problema agregando la declaraci\u00f3n que falta. Direcciones-Cobertura: (\"Leer desde el puntero despu\u00e9s de estar libre\")"
    }
  ],
  "id": "CVE-2021-46991",
  "lastModified": "2024-12-06T15:27:56.500",
  "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": "nvd@nist.gov",
        "type": "Primary"
      }
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  "published": "2024-02-28T09:15:37.787",
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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