Use-After-Free Vulnerability in Tegra ADMA Driver by NVIDIA

CVE-2025-71162

What is CVE-2025-71162?

A use-after-free vulnerability exists in the Tegra ADMA driver, primarily impacting audio streams during termination, particularly under XRUN conditions. This flaw arises when the DMA buffer is freed prematurely while still being accessed by a scheduled tasklet. Specifically, the DMA transfer completion triggers an interrupt that schedules a tasklet; if audio playback is stopped before the tasklet executes, the buffer may be accessed after it's been freed. Proper synchronization methods, including marking descriptors as terminated rather than freeing them outright and implementing callbacks for tasklet management, are critical to mitigate this issue.

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