4.20-stable review patch. If anyone has any objections, please let me know.
------------------
From: Dmitry Eremin-Solenikov <dbaryshkov@xxxxxxxxx>
commit fa4600734b74f74d9169c3015946d4722f8bcf79 upstream.
crypto_cfb_decrypt_segment() incorrectly XOR'ed generated keystream with
IV, rather than with data stream, resulting in incorrect decryption.
Test vectors will be added in the next patch.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
crypto/cfb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/crypto/cfb.c
+++ b/crypto/cfb.c
@@ -144,7 +144,7 @@ static int crypto_cfb_decrypt_segment(st
do {
crypto_cfb_encrypt_one(tfm, iv, dst);
- crypto_xor(dst, iv, bsize);
+ crypto_xor(dst, src, bsize);
iv = src;
src += bsize;
