Use after free issue occurs when command destructors access dynamically allocated response buffer which is already deallocated during previous command teardwon sequence in Snapdragon Auto, Snapdragon Compute, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Voice & Music, Snapdragon Wearables in APQ8098, MSM8909W, Nicobar, QCS405, QCS605, SDA845, SDM660, SDM670, SDM710, SDM845, SDX24, SM6150, SM7150, SM8150, SM8250, SXR2130
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
Link | Tags |
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https://www.qualcomm.com/company/product-security/bulletins/november-2019-bulletin | vendor advisory |