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-rw-r--r--src/signal/sigaction.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/src/signal/sigaction.c b/src/signal/sigaction.c
index ab23a6f2..6eca06f1 100644
--- a/src/signal/sigaction.c
+++ b/src/signal/sigaction.c
@@ -17,10 +17,6 @@ void __get_handler_set(sigset_t *set)
 int __libc_sigaction(int sig, const struct sigaction *restrict sa, struct sigaction *restrict old)
 {
 	struct k_sigaction ksa, ksa_old;
-	if (sig >= (unsigned)_NSIG) {
-		errno = EINVAL;
-		return -1;
-	}
 	if (sa) {
 		if ((uintptr_t)sa->sa_handler > 1UL) {
 			a_or_l(handler_set+(sig-1)/(8*sizeof(long)),
@@ -57,7 +53,7 @@ int __libc_sigaction(int sig, const struct sigaction *restrict sa, struct sigact
 
 int __sigaction(int sig, const struct sigaction *restrict sa, struct sigaction *restrict old)
 {
-	if (sig-32U < 3) {
+	if (sig-32U < 3 || sig-1U >= _NSIG-1) {
 		errno = EINVAL;
 		return -1;
 	}