dns: fix name parsing issue leading to events

9 years ago · 26e67400ba
parent 884fddf035
commit 26e67400ba
1 changed files with 5 additions and 1 deletions
--- a/src/app-layer-dns-common.c
+++ b/src/app-layer-dns-common.c
@ -730,7 +730,11 @@ static uint16_t DNSResponseGetNameByOffset(const uint8_t * const input, const ui
        }
        qdata += length;

-        if ((uint64_t)((qdata + 1) - input) >= (uint64_t)input_len) {
+        /* if we're at the end of the input data, we're done */
+        if ((uint64_t)((qdata + 1) - input) == (uint64_t)input_len) {
+            break;
+        }
+        else if ((uint64_t)((qdata + 1) - input) > (uint64_t)input_len) {
            SCLogDebug("input buffer too small");
            goto insufficient_data;
        }