In the Linux Mali driver, when building with MALI_USE_CSF, the VFS read handler of the main Mali file descriptor (kbase_read()) never looks at its "count" parameter. This means that a simple userspace program that sets up a Mali file descriptor, then calls read(mali_fd, buf, 1), will see read() returning a higher length than requested, and out-of-bounds data in the userspace buffer will be clobbered.
3d801b6f86d2cf6dcafab0fab084495a709669823b168ea8d4eaa15c04e2a64cThe Mali driver frees GPU page tables before removing the higher-level PTEs pointing to those page tables (and, therefore, also before issuing the required flushes). This means a racing memory write instruction on the GPU can write to an attacker-controlled physical address.
b9314770c55b858e1768dc0c89581aba6dcd511b77abe5a7a6849771f7835386Arm Mali has an issue where a driver exposes physical addresses to unprivileged userspace.
0dd6b9f2ab5a6a54b712bd8da62800520f10d77e1129a4be99b021e528de767aOn Mali devices without the new CSF interface, IMPORTED_USER_BUF is released without flushing host-side VMAs, leading to a page use-after-free vulnerability.
51a2923bc823fc6d20b96117084be18b4a15d5a3f49b9f2dc2e04e3c069198a0
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