Re: [PATCH] Bluetooth: stop proccessing malicious adv data

[Marcel Holtmann]

Hi Pavel,

> Syzbot reported slab-out-of-bounds read in hci_le_adv_report_evt(). The
> problem was in missing validaion check.
> 
> We should check if data is not malicious and we can read next data block.
> If we won't check ptr validness, code can read a way beyond skb->end and
> it can cause problems, of course.
> 
> Fixes: e95beb414168 ("Bluetooth: hci_le_adv_report_evt code refactoring")
> Reported-and-tested-by: syzbot+e3fcb9c4f3c2a931dc40@xxxxxxxxxxxxxxxxxxxxxxxxx
> Signed-off-by: Pavel Skripkin <paskripkin@xxxxxxxxx>
> ---
> net/bluetooth/hci_event.c | 8 +++++++-
> 1 file changed, 7 insertions(+), 1 deletion(-)

patch has been applied to bluetooth-next tree.

Regards

Marcel