Bluetooth: Fix slab-out-of-bounds read in hci_le_direct_adv_report_evt()

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commit f7e0e8b2f1 upstream.

`num_reports` is not being properly checked. A malformed event packet with
a large `num_reports` number makes hci_le_direct_adv_report_evt() read out
of bounds. Fix it.

Cc: stable@vger.kernel.org
Fixes: 2f010b5588 ("Bluetooth: Add support for handling LE Direct Advertising Report events")
Reported-and-tested-by: syzbot+24ebd650e20bd263ca01@syzkaller.appspotmail.com
Link: https://syzkaller.appspot.com/bug?extid=24ebd650e20bd263ca01
Signed-off-by: Peilin Ye <yepeilin.cs@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Peilin Ye 2020-09-09 03:17:00 -04:00 • committed by Greg Kroah-Hartman

parent c2c9944b56

commit b260e4a688

1 changed files with 5 additions and 7 deletions

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net/bluetooth/hci_event.c

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