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CVE-2017-8246

Quick assessment

Affected
Qualcomm, Inc. Android for MSM, Firefox OS for MSM, QRD Android
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Android是美国谷歌（Google）公司和开放手持设备联盟（简称OHA）共同开发的一套以Linux为基础的开源操作系统。ALSA PCM Playback Kernel Module是其中的一个音频播放内核模块。 Android中的ALSA PCM Playback Kernel Module的‘msm_pcm_playback_close()’函数存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。

AI Predicted 5.5 Difficulty: Moderate EPSS 0.17% · P7
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I. Basic Information for CVE-2017-8246

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Android ALSA PCM Playback Kernel Module 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Android是美国谷歌（Google）公司和开放手持设备联盟（简称OHA）共同开发的一套以Linux为基础的开源操作系统。ALSA PCM Playback Kernel Module是其中的一个音频播放内核模块。 Android中的ALSA PCM Playback Kernel Module的‘msm_pcm_playback_close()’函数存在安全漏洞。攻击者可利用该漏洞造成拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Qualcomm, Inc. Android for MSM, Firefox OS for MSM, QRD Android All Android releases from CAF using the Linux kernel -

II. Public POCs for CVE-2017-8246

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III. Intelligence Information for CVE-2017-8246

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Vendor Advisories for CVE-2017-8246 (1)

Other References for CVE-2017-8246 (1)

Same Patch Batch · Qualcomm, Inc. · 2017-05-12 · 3 CVEs total

CVE-2017-8244 Android 竞争条件漏洞
CVE-2017-8245 Android 缓冲区错误漏洞

IV. Related Vulnerabilities

Same product: Android for MSM, Firefox OS for MSM, QRD Android
Same vendor: Qualcomm, Inc.

V. Comments for CVE-2017-8246

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