Improper validation of event buffer extracted from FW response can lead to integer overflow, which will allow to pass the length check and eventually will lead to buffer overwrite when event data is copied to context buffer in Snapdragon Auto, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music in MDM9607, Nicobar, QCA6574AU, QCN7605, QCS405, QCS605, SDM660, SDM845, SDX55, SM6150, SM7150, SM8150, SM8250, SXR1130, SXR2130
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 |
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https://www.qualcomm.com/company/product-security/bulletins/december-2019-bulletin | patch vendor advisory |