1 files changed, 1 insertions, 1 deletions

diff --git a/shell/ash.c b/shell/ash.c
index 9681111cc..22c726043 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -12967,7 +12967,7 @@ trapcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
         exitcode = 0;
         while (*ap) {
                 signo = get_signum(*ap);
-                if (signo < 0) {
+                if (signo < 0 || signo >= NSIG) {
                         /* Mimic bash message exactly */
                         ash_msg("%s: invalid signal specification", *ap);
                         exitcode = 1;