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| author |   David S. Miller <davem@davemloft.net> | 2019-01-27 10:43:17 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-01-27 10:43:17 -0800 |
| commit | 1d68101367a92336e633d0c3681bf8c86644e124 (patch) | |
| tree | 8fdacef561481c25c71641b8fa91a5dfa0ba7f96 /drivers/input/misc/uinput.c | |
| parent | net: lmc: remove -I. header search path (diff) | |
| parent | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm (diff) | |
| download | linux-dev-1d68101367a92336e633d0c3681bf8c86644e124.tar.xz linux-dev-1d68101367a92336e633d0c3681bf8c86644e124.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'drivers/input/misc/uinput.c')
| -rw-r--r-- | drivers/input/misc/uinput.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c index 8ec483e8688b..26ec603fe220 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -39,6 +39,7 @@ #include <linux/init.h> #include <linux/fs.h> #include <linux/miscdevice.h> +#include <linux/overflow.h> #include <linux/input/mt.h> #include "../input-compat.h" @@ -405,7 +406,7 @@ static int uinput_open(struct inode *inode, struct file *file) static int uinput_validate_absinfo(struct input_dev *dev, unsigned int code, const struct input_absinfo *abs) { - int min, max; + int min, max, range; min = abs->minimum; max = abs->maximum; @@ -417,7 +418,7 @@ static int uinput_validate_absinfo(struct input_dev *dev, unsigned int code, return -EINVAL; } - if (abs->flat > max - min) { + if (!check_sub_overflow(max, min, &range) && abs->flat > range) { printk(KERN_DEBUG "%s: abs_flat #%02x out of range: %d (min:%d/max:%d)\n", UINPUT_NAME, code, abs->flat, min, max); |