From: Gilad Ben-Yossef gilad@benyossef.com
commit 7a4be6c113c1f721818d1e3722a9015fe393295c upstream.
In case of AEAD decryption verifcation error we were using the wrong value to zero out the plaintext buffer leaving the end of the buffer with the false plaintext.
Signed-off-by: Gilad Ben-Yossef gilad@benyossef.com Fixes: ff27e85a85bb ("crypto: ccree - add AEAD support") CC: stable@vger.kernel.org # v4.17+ Signed-off-by: Herbert Xu herbert@gondor.apana.org.au Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/crypto/ccree/cc_aead.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/crypto/ccree/cc_aead.c +++ b/drivers/crypto/ccree/cc_aead.c @@ -236,7 +236,7 @@ static void cc_aead_complete(struct devi /* In case of payload authentication failure, MUST NOT * revealed the decrypted message --> zero its memory. */ - cc_zero_sgl(areq->dst, areq_ctx->cryptlen); + cc_zero_sgl(areq->dst, areq->cryptlen); err = -EBADMSG; } } else { /*ENCRYPT*/