4.19-stable review patch. If anyone has any objections, please let me know.
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From: Dmitry Eremin-Solenikov dbaryshkov@gmail.com
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@gmail.com Cc: stable@vger.kernel.org Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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;