In the Linux kernel, the following vulnerability has been resolved:

misc: fastrpc: fix DMA address corruption due to find_vma misuse

fastrpc_get_args() uses find_vma() to look up the VMA for a user-provided
pointer and compute a DMA address offset. When the address falls in a gap
before the returned VMA, (ptr & PAGE_MASK) - vma->vm_start underflows,
corrupting the DMA address sent to the DSP.

Replace find_vma() with vma_lookup(), which returns NULL when the address
is not contained within any VMA.

https://git.kernel.org/stable/c/2d0f47e27c1fa718b29c69aa7c96a2c5161bc2c2

https://git.kernel.org/stable/c/464c6ad2aa16e1e1df9d559289199356493d1e00

https://git.kernel.org/stable/c/53e06f8a3c2b085c31bf1284e2ebcb8036e99625

https://git.kernel.org/stable/c/708c17b52c60fe7a57e73b495bdee50f58feb48c

https://git.kernel.org/stable/c/7ba7b30ddb04646d4d638f4d8c4718a304bbbddd

https://git.kernel.org/stable/c/d3e26df2e8eb361e6bef096b2fd565476a1f14c4

https://git.kernel.org/stable/c/e69e306a4cccb40a73511350cb280825a556ce3c

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