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CVE-2017-8246 In function msm_pcm_playback_close() in all Android releases from CAF using the Linux kernel, prtd is assigned…

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.

Affected products and versions

Product Affected versions Fixed in
Android for MSM, Firefox OS for MSM, QRD Android Versions not published

References

Timeline

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