Integer underflow in the diag driver in the Qualcomm components in Android before 2016-08-05 on Nexus 5 and 7 (2013) devices allows attackers to gain privileges or obtain sensitive information via a crafted application, aka Android internal bug 28768146 and Qualcomm internal bug CR549470.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| http://source.android.com/security/bulletin/2016-08-01.html | vendor advisory |
| https://source.codeaurora.org/quic/la/kernel/msm-3.10/commit/?id=75eac48a48562f819f50eeff8369b296d89102d7 | issue tracking patch |
| http://www.securityfocus.com/bid/92219 | vdb entry |