1 files changed, 9 insertions, 1 deletions

diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 3c0998426b57..2082b1a88fb9 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1981,7 +1981,15 @@ static int do_proc_dointvec_conv(bool *negp, unsigned long *lvalp,
                                  int write, void *data)
 {
         if (write) {
-                *valp = *negp ? -*lvalp : *lvalp;
+                if (*negp) {
+                        if (*lvalp > (unsigned long) INT_MAX + 1)
+                                return -EINVAL;
+                        *valp = -*lvalp;
+                } else {
+                        if (*lvalp > (unsigned long) INT_MAX)
+                                return -EINVAL;
+                        *valp = *lvalp;
+                }
         } else {
                 int val = *valp;
                 if (val < 0) {