diff options
| -rw-r--r-- | crypto/xcbc.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/crypto/xcbc.c b/crypto/xcbc.c index 86727403e5ab..2feb0f239c38 100644 --- a/crypto/xcbc.c +++ b/crypto/xcbc.c @@ -124,6 +124,11 @@ static int crypto_xcbc_digest_update2(struct hash_desc *pdesc, unsigned int offset = sg[i].offset; unsigned int slen = sg[i].length; + if (unlikely(slen > nbytes)) + slen = nbytes; + + nbytes -= slen; + while (slen > 0) { unsigned int len = min(slen, ((unsigned int)(PAGE_SIZE)) - offset); char *p = crypto_kmap(pg, 0) + offset; @@ -177,7 +182,6 @@ static int crypto_xcbc_digest_update2(struct hash_desc *pdesc, offset = 0; pg++; } - nbytes-=sg[i].length; i++; } while (nbytes>0); |