MSRC_CVE-2017-8246

Vulnerability from csaf_microsoft - Published: 2017-05-02 00:00 - Updated: 2020-09-25 00:00
Summary
In function msm_pcm_playback_close() in all Android releases from CAF using the Linux kernel prtd is assigned substream->runtime->private_data. Later prtd is freed. However prtd is not sanitized and set to NULL resulting in a dangling pointer. There are other functions that access the same memory (substream->runtime->private_data) with a NULL check such as msm_pcm_volume_ctl_put() which means this freed memory could be used.

Notes

Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
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{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
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      "tlp": {
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        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
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    "references": [
      {
        "category": "self",
        "summary": "CVE-2017-8246 In function msm_pcm_playback_close() in all Android releases from CAF using the Linux kernel prtd is assigned substream-\u003eruntime-\u003eprivate_data. Later prtd is freed. However prtd is not sanitized and set to NULL resulting in a dangling pointer. There are other functions that access the same memory (substream-\u003eruntime-\u003eprivate_data) with a NULL check such as msm_pcm_volume_ctl_put() which means this freed memory could be used. - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2017/msrc_cve-2017-8246.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "In function msm_pcm_playback_close() in all Android releases from CAF using the Linux kernel prtd is assigned substream-\u003eruntime-\u003eprivate_data. Later prtd is freed. However prtd is not sanitized and set to NULL resulting in a dangling pointer. There are other functions that access the same memory (substream-\u003eruntime-\u003eprivate_data) with a NULL check such as msm_pcm_volume_ctl_put() which means this freed memory could be used.",
    "tracking": {
      "current_release_date": "2020-09-25T00:00:00.000Z",
      "generator": {
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  "product_tree": {
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  },
  "vulnerabilities": [
    {
      "cve": "CVE-2017-8246",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "notes": [
        {
          "category": "general",
          "text": "qualcomm",
          "title": "Assigning CNA"
        }
      ],
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        "known_affected": [
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      "references": [
        {
          "category": "self",
          "summary": "CVE-2017-8246 In function msm_pcm_playback_close() in all Android releases from CAF using the Linux kernel prtd is assigned substream-\u003eruntime-\u003eprivate_data. Later prtd is freed. However prtd is not sanitized and set to NULL resulting in a dangling pointer. There are other functions that access the same memory (substream-\u003eruntime-\u003eprivate_data) with a NULL check such as msm_pcm_volume_ctl_put() which means this freed memory could be used. - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2017/msrc_cve-2017-8246.json"
        }
      ],
      "remediations": [
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          "category": "vendor_fix",
          "date": "2020-09-25T00:00:00.000Z",
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            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "temporalScore": 7.8,
            "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"
          },
          "products": [
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          ]
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      ],
      "title": "In function msm_pcm_playback_close() in all Android releases from CAF using the Linux kernel prtd is assigned substream-\u003eruntime-\u003eprivate_data. Later prtd is freed. However prtd is not sanitized and set to NULL resulting in a dangling pointer. There are other functions that access the same memory (substream-\u003eruntime-\u003eprivate_data) with a NULL check such as msm_pcm_volume_ctl_put() which means this freed memory could be used."
    }
  ]
}


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