While processing fragments, when the fragment count becomes very large, an integer overflow leading to a buffer overflow can occur in Android releases from CAF using the linux kernel (Android for MSM, Firefox OS for MSM, QRD Android) before security patch level 2018-06-05.
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 |
|---|---|
| https://www.codeaurora.org/security-bulletin/2018/07/02/july-2018-code-aurora-security-bulletin | third party advisory patch |
| https://source.android.com/security/bulletin/pixel/2018-06-01#qualcomm-components | vendor advisory |
| https://source.codeaurora.org/quic/la/platform/vendor/qcom-opensource/wlan/qcacld-2.0/commit/?id=cf1c43ce8840021d2907afaa6c514e6971d7ebac | third party advisory patch |