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-rw-r--r--src/references.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/references.c b/src/references.c
index 5ba4b24..def4dd8 100644
--- a/src/references.c
+++ b/src/references.c
@@ -100,6 +100,9 @@ reference* reference_lookup(reference_map *map, chunk *label)
unsigned char *norm;
unsigned int hash;
+ if (label->len > MAX_LINK_LABEL_LENGTH)
+ return NULL;
+
if (map == NULL)
return NULL;