Multiple integer overflows in drivers/crypto/msm/qcedev.c in the Qualcomm cryptographic engine driver in Android before 2016-10-05 on Nexus 5X, Nexus 6, Nexus 6P, and Android One devices allow attackers to gain privileges via a crafted application, aka Android internal bug 29999665 and Qualcomm internal bug CR 1046507.
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://www.securityfocus.com/bid/93327 | vdb entry |
| http://source.android.com/security/bulletin/2016-10-01.html | vendor advisory |
| https://source.codeaurora.org/quic/la/kernel/msm-3.18/commit/?id=5f69ccf3b011c1d14a1b1b00dbaacf74307c9132 | third party advisory patch |