diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index a6c17d354d9b2508538f4ae71c3ad29e40369e9b..3b9f4698140107825622c11ebc511b5e60859ae4 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -2638,7 +2638,16 @@ static int do_proc_dointvec_minmax_conv(bool *negp, unsigned long *lvalp,
 {
 	struct do_proc_dointvec_minmax_conv_param *param = data;
 	if (write) {
-		int val = *negp ? -*lvalp : *lvalp;
+		int val;
+		if (*negp) {
+			if (*lvalp > (unsigned long) INT_MAX + 1)
+				return -EINVAL;
+			val = -*lvalp;
+		} else {
+			if (*lvalp > (unsigned long) INT_MAX)
+				return -EINVAL;
+			val = *lvalp;
+		}
 		if ((param->min && *param->min > val) ||
 		    (param->max && *param->max < val))
 			return -EINVAL;