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-rw-r--r--inet/inet6_opt.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/inet/inet6_opt.c b/inet/inet6_opt.c
index 83063d2259..ccf7af5f61 100644
--- a/inet/inet6_opt.c
+++ b/inet/inet6_opt.c
@@ -34,7 +34,7 @@ inet6_opt_init (void *extbuf, socklen_t extlen)
 {
   if (extbuf != NULL)
     {
-      if (extlen <= 0 || (extlen % 8) != 0)
+      if (extlen <= 0 || (extlen % 8) != 0 || extlen > 256 * 8)
 	return -1;
 
       /* Fill in the length in units of 8 octets.  */