Don't read/write after the string when the synthesis is slightly malformed

1 files changed, 1 insertions, 1 deletions

diff --git a/URPM.xs b/URPM.xs
index b0338b1..b7a6462 100644
--- a/URPM.xs
+++ b/URPM.xs
@@ -1759,7 +1759,7 @@ Pkg_filename(pkg)
   if (pkg->info) {
     char *eon;
 
-    if ((eon = strchr(pkg->info, '@')) != NULL) {
+    if ((eon = strchr(pkg->info, '@')) != NULL && strlen(eon) >= 3) {
 	char savbuf[4];
 	memcpy(savbuf, eon, 4); /* there should be at least epoch and size described so (@0@0 minimum) */
 	memcpy(eon, ".rpm", 4);