In the Linux kernel, the following vulnerability has been resolved: virt/coco/sev-guest: Double-buffer messages The encryption algorithms read and write directly to shared unencrypted memory, which may leak information as well as permit the host to tamper with the message integrity. Instead, copy whole messages in or out as needed before doing any computation on them.
https://git.kernel.org/stable/c/c27dafc4aa50a29ec927b3aa84ac7b430071f682
https://git.kernel.org/stable/c/965006103a14703cc42043bbf9b5e0cdf7a468ad
https://git.kernel.org/stable/c/577a64725bfd77645986168e953d405067ee565b
https://git.kernel.org/stable/c/4b69c63f716cfda38e1210e65b68f67f6cee2ddf