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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org,
	Benoit Camredon <benoit.camredon@airbus.com>,
	Jiri Kosina <jkosina@suse.cz>
Subject: [PATCH 4.4 20/27] HID: hid-cypress: validate length of report
Date: Fri, 13 Jan 2017 12:38:37 +0100	[thread overview]
Message-ID: <20170113113723.454006542@linuxfoundation.org> (raw)
In-Reply-To: <20170113113722.669106991@linuxfoundation.org>

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

commit 1ebb71143758f45dc0fa76e2f48429e13b16d110 upstream.

Make sure we have enough of a report structure to validate before
looking at it.

Reported-by: Benoit Camredon <benoit.camredon@airbus.com>
Tested-by: Benoit Camredon <benoit.camredon@airbus.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

---
 drivers/hid/hid-cypress.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/hid/hid-cypress.c
+++ b/drivers/hid/hid-cypress.c
@@ -39,6 +39,9 @@ static __u8 *cp_report_fixup(struct hid_
 	if (!(quirks & CP_RDESC_SWAPPED_MIN_MAX))
 		return rdesc;
 
+	if (*rsize < 4)
+		return rdesc;
+
 	for (i = 0; i < *rsize - 4; i++)
 		if (rdesc[i] == 0x29 && rdesc[i + 2] == 0x19) {
 			rdesc[i] = 0x19;

  parent reply	other threads:[~2017-01-13 11:42 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20170113113908epcas2p26894f438616da1bf9f7b6b31f735fedc@epcas2p2.samsung.com>
2017-01-13 11:38 ` [PATCH 4.4 00/27] 4.4.43-stable review Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 01/27] netvsc: reduce maximum GSO size Greg Kroah-Hartman
2017-02-09 19:37     ` Ben Hutchings
2017-02-09 19:37       ` Ben Hutchings
2017-02-10 21:15       ` Greg Kroah-Hartman
2017-02-10 21:15         ` Greg Kroah-Hartman
2017-02-10 21:41       ` Patch "[PATCH] netvsc: Set maximum GSO size in the right place" has been added to the 4.4-stable tree gregkh
2017-01-13 11:38   ` [PATCH 4.4 02/27] ser_gigaset: return -ENOMEM on error instead of success Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 03/27] net: vrf: Drop conntrack data after pass through VRF device on Tx Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 04/27] ipv6: handle -EFAULT from skb_copy_bits Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 05/27] net, sched: fix soft lockup in tc_classify Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 06/27] net: stmmac: Fix race between stmmac_drv_probe and stmmac_open Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 07/27] net/mlx5: Check FW limitations on log_max_qp before setting it Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 08/27] net/mlx5: Avoid shadowing numa_node Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 09/27] drop_monitor: add missing call to genlmsg_end Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 10/27] drop_monitor: consider inserted data in genlmsg_end Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 11/27] igmp: Make igmp group member RFC 3376 compliant Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 12/27] ipv4: Do not allow MAIN to be alias for new LOCAL w/ custom rules Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 13/27] r8152: split rtl8152_suspend function Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 14/27] r8152: fix rx issue for runtime suspend Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 15/27] gro: Enter slow-path if there is no tailroom Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 16/27] gro: use min_t() in skb_gro_reset_offset() Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 17/27] gro: Disable frag0 optimization on IPv6 ext headers Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 18/27] net: ipv4: Fix multipath selection with vrf Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 19/27] net: vrf: do not allow table id 0 Greg Kroah-Hartman
2017-01-13 11:38   ` Greg Kroah-Hartman [this message]
2017-01-13 11:38   ` [PATCH 4.4 21/27] ALSA: firewire-tascam: Fix to handle error from initialization of stream data Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 22/27] powerpc: Fix build warning on 32-bit PPC Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 23/27] ARM: zynq: Reserve correct amount of non-DMA RAM Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 24/27] ARM: OMAP4+: Fix bad fallthrough for cpuidle Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 26/27] ALSA: usb-audio: Add a quirk for Plantronics BT600 Greg Kroah-Hartman
2017-01-13 11:38   ` [PATCH 4.4 27/27] mm/init: fix zone boundary creation Greg Kroah-Hartman
2017-01-13 20:19   ` [PATCH 4.4 00/27] 4.4.43-stable review Guenter Roeck
2017-01-14  7:24     ` Greg Kroah-Hartman
2017-01-13 21:57   ` Shuah Khan

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