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Romain Izard authored
The IV buffer used during CCM operations is used twice, during both the hashing step and the ciphering step. When using a hardware accelerator that updates the contents of the IV buffer at the end of ciphering operations, the value will be modified. In the decryption case, the subsequent setup of the hashing algorithm will interpret the updated IV instead of the original value, which can lead to out-of-bounds writes. Reuse the idata buffer, only used in the hashing step, to preserve the IV's value during the ciphering step in the decryption case. Signed-off-by:
Romain Izard <romain.izard.pro@gmail.com> Reviewed-by:
Tudor Ambarus <tudor.ambarus@microchip.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au>
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