A flaw was found in the QEMU virtual crypto device while handling data encryption/decryption requests in virtio_crypto_handle_sym_req. There is no check for the value of `src_len` and `dst_len` in virtio_crypto_sym_op_helper, potentially leading to a heap buffer overflow when the two values differ.
https://security.netapp.com/advisory/ntap-20230831-0008/
https://lists.debian.org/debian-lts-announce/2023/10/msg00006.html