diff options
| -rw-r--r-- | kernel/sysctl.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/kernel/sysctl.c b/kernel/sysctl.c index 3a1744fed2b..0deed82a615 100644 --- a/kernel/sysctl.c +++ b/kernel/sysctl.c @@ -2620,6 +2620,10 @@ static int deprecated_sysctl_warning(struct __sysctl_args *args) int name[CTL_MAXNAME]; int i; + /* Check args->nlen. */ + if (args->nlen < 0 || args->nlen > CTL_MAXNAME) + return -ENOTDIR; + /* Read in the sysctl name for better debug message logging */ for (i = 0; i < args->nlen; i++) if (get_user(name[i], args->name + i)) |