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Bluetooth: Properly check L2CAP config option output buffer length
authorBen Seri <ben@armis.com>
Sat, 9 Sep 2017 21:15:59 +0000 (23:15 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 13 Sep 2017 21:13:36 +0000 (14:13 -0700)
commit6300c8bfafe032187f3cbaa43dbf7d306650c5ed
tree74dcc10aea9898d7c5503b8714992148cba2e7d6tree | snapshot
parent03bea515b9a2f2a48d46a5a4bcc69be264afb6afcommit | diff
Bluetooth: Properly check L2CAP config option output buffer length

commit e860d2c904d1a9f38a24eb44c9f34b8f915a6ea3 upstream.

Validate the output buffer length for L2CAP config requests and responses
to avoid overflowing the stack buffer used for building the option blocks.

Signed-off-by: Ben Seri <ben@armis.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
net/bluetooth/l2cap_core.c diff | blob | history
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