Message ID | 1724766547-24435-1-git-send-email-george.kennedy@oracle.com (mailing list archive) |
---|---|
State | Mainlined |
Commit | 99d3bf5f7377d42f8be60a6b9cb60fb0be34dceb |
Headers | show |
Series | Backport request to fix a WARNING in input_mt_init_slots | expand |
On Tue, Aug 27, 2024 at 08:49:07AM -0500, George Kennedy wrote: > Hello, > > We have seen a WARNING message while fuzzing with syzkaller. Then don't run syzkaller :) Now queued up, thanks. greg k-h
diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c index 14b53dac1253bf..6b04a674f832a0 100644 --- a/drivers/input/input-mt.c +++ b/drivers/input/input-mt.c @@ -46,6 +46,9 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots, return 0; if (mt) return mt->num_slots != num_slots ? -EINVAL : 0; + /* Arbitrary limit for avoiding too large memory allocation. */ + if (num_slots > 1024) + return -EINVAL; mt = kzalloc(struct_size(mt, slots, num_slots), GFP_KERNEL); if (!mt)