fkie_cve-2022-49026
Vulnerability from fkie_nvd
Published
2024-10-21 20:15
Modified
2024-10-24 03:49
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: e100: Fix possible use after free in e100_xmit_prepare In e100_xmit_prepare(), if we can't map the skb, then return -ENOMEM, so e100_xmit_frame() will return NETDEV_TX_BUSY and the upper layer will resend the skb. But the skb is already freed, which will cause UAF bug when the upper layer resends the skb. Remove the harmful free.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/45605c75c52c7ae7bfe902214343aabcfe5ba0ffPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9fc27d22cdb9b1fcd754599d216a8992fed280cdPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b46f6144ab89d3d757ead940759c505091626a7dPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b775f37d943966f6f77dca402f5a9dedce502c25Patch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1
linux linux_kernel 6.1


To clipboard 

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              "versionEndExcluding": "5.10.158",
              "versionStartIncluding": "4.3",
              "vulnerable": true
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ne100: Fix possible use after free in e100_xmit_prepare\n\nIn e100_xmit_prepare(), if we can\u0027t map the skb, then return -ENOMEM, so\ne100_xmit_frame() will return NETDEV_TX_BUSY and the upper layer will\nresend the skb. But the skb is already freed, which will cause UAF bug\nwhen the upper layer resends the skb.\n\nRemove the harmful free."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: e100: Se corrige el posible use after free en e100_xmit_prepare En e100_xmit_prepare(), si no podemos mapear el skb, entonces devolvemos -ENOMEM, por lo que e100_xmit_frame() devolver\u00e1 NETDEV_TX_BUSY y la capa superior reenviar\u00e1 el skb. Pero el skb ya est\u00e1 liberado, lo que provocar\u00e1 un error UAF cuando la capa superior reenv\u00ede el skb. Elimine la liberaci\u00f3n da\u00f1ina."
    }
  ],
  "id": "CVE-2022-49026",
  "lastModified": "2024-10-24T03:49:21.780",
  "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"
      }
    ]
  },
  "published": "2024-10-21T20:15:13.490",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/45605c75c52c7ae7bfe902214343aabcfe5ba0ff"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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