diff options
Diffstat (limited to 'crypto/rsa-pkcs1pad.c')
-rw-r--r-- | crypto/rsa-pkcs1pad.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/crypto/rsa-pkcs1pad.c b/crypto/rsa-pkcs1pad.c index 0aa489711ec4..9cbafaf6dd85 100644 --- a/crypto/rsa-pkcs1pad.c +++ b/crypto/rsa-pkcs1pad.c @@ -475,6 +475,8 @@ static int pkcs1pad_verify_complete(struct akcipher_request *req, int err) pos++; if (digest_info) { + if (digest_info->size > dst_len - pos) + goto done; if (crypto_memneq(out_buf + pos, digest_info->data, digest_info->size)) goto done; @@ -494,7 +496,7 @@ static int pkcs1pad_verify_complete(struct akcipher_request *req, int err) sg_nents_for_len(req->src, req->src_len + req->dst_len), req_ctx->out_buf + ctx->key_size, - req->dst_len, ctx->key_size); + req->dst_len, req->src_len); /* Do the actual verification step. */ if (memcmp(req_ctx->out_buf + ctx->key_size, out_buf + pos, req->dst_len) != 0) @@ -537,7 +539,7 @@ static int pkcs1pad_verify(struct akcipher_request *req) if (WARN_ON(req->dst) || WARN_ON(!req->dst_len) || - !ctx->key_size || req->src_len < ctx->key_size) + !ctx->key_size || req->src_len != ctx->key_size) return -EINVAL; req_ctx->out_buf = kmalloc(ctx->key_size + req->dst_len, GFP_KERNEL); |