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

RDMA/umem: Fix truncation for block sizes >= 4G

When the iommu is used the linearization of the mapping can give a single
block that is very large split across multiple SG entries.

When __rdma_block_iter_next() reassembles the split SG entries it is
overflowing the 32 bit stack values and computed the wrong DMA addresses
for blocks after the truncation.

Use the right types to hold DMA addresses.

https://git.kernel.org/stable/c/15fe76e23615f502d051ef0768f86babaf08746c

https://git.kernel.org/stable/c/2ff4b7817e5b78070c30f5fb5e678e452a2628b3

https://git.kernel.org/stable/c/8fe0231adebe086c8a459c790944ac026cd99c6e

https://git.kernel.org/stable/c/ac1aad8e1281534ce936c250f68084fc79c5469e

https://git.kernel.org/stable/c/afd35fec9297195b759078745549c2671223f24f

https://git.kernel.org/stable/c/baf8685bcf56dc1efb44b8f6a57c42516e549068

https://git.kernel.org/stable/c/cc644d5608e3b0dadc970bd6e6aa26b91ea07d0f

https://git.kernel.org/stable/c/dee2a49adeeb2a5e16a3fc858fa21b841c519802

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