Merge pull request Mbed-TLS#390 from pabuhler/coverity-scan-179781

bitvector of length zero is not valid
livepeer · Nov 29, 2017 · 03e237e · 03e237e
2 parents 8f38517 + b44764b
commit 03e237e
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/crypto/math/datatypes.c b/crypto/math/datatypes.c
@@ -328,9 +328,11 @@ int bitvector_alloc(bitvector_t *v, unsigned long length)
     l = length / bits_per_word * bytes_per_word;
 
     /* allocate memory, then set parameters */
-    if (l == 0)
+    if (l == 0) {
         v->word = NULL;
-    else {
+        v->length = 0;
+        return -1;
+    } else {
         v->word = (uint32_t *)srtp_crypto_alloc(l);
         if (v->word == NULL) {
             v->length = 0;