Files
linux/crypto
Eric Biggers 1cb3948e99 crypto: pcbc - remove bogus memcpy()s with src == dest
commit 251b7aea34 upstream.

The memcpy()s in the PCBC implementation use walk->iv as both the source
and destination, which has undefined behavior.  These memcpy()'s are
actually unneeded, because walk->iv is already used to hold the previous
plaintext block XOR'd with the previous ciphertext block.  Thus,
walk->iv is already updated to its final value.

So remove the broken and unnecessary memcpy()s.

Fixes: 91652be5d1 ("[CRYPTO] pcbc: Add Propagated CBC template")
Cc: <stable@vger.kernel.org> # v2.6.21+
Cc: David Howells <dhowells@redhat.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Maxim Zhukov <mussitantesmortem@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-05-15 12:06:04 +09:00
..
2017-11-15 15:53:18 +01:00
2016-07-18 17:35:39 +08:00
2016-07-18 17:35:44 +08:00
2017-11-24 08:33:41 +01:00
2016-08-16 17:16:49 +08:00