In the video driver function set_output_buffers(), binfo can be accessed after being freed in a failure scenario in all Android releases from CAF (Android for MSM, Firefox OS for MSM, QRD Android) using the Linux Kernel.
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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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.codeaurora.org/security-bulletin/2018/05/11/may-2018-code-aurora-security-bulletin-2 | third party advisory patch |
https://source.android.com/security/bulletin/pixel/2018-05-01 | third party advisory |