In all Qualcomm products with Android releases from CAF using the Linux kernel, in audio_aio_ion_lookup_vaddr, the buffer length, which is user input, ends up being used to validate if the buffer is fully within the valid region. If the buffer length is large enough then the address + length operation could overflow and produce a result far below the valid region.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://source.android.com/security/bulletin/2017-09-01 | patch vendor advisory |
| http://www.securityfocus.com/bid/100658 | vdb entry third party advisory |