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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Denis Kirjanov <kda@linux-powerpc.org>,
	syzbot+3499a83b2d062ae409d4@syzkaller.appspotmail.com,
	"David S . Miller" <davem@davemloft.net>,
	Sasha Levin <sashal@kernel.org>,
	linux-usb@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.14 22/44] net: usb: pegasus: fix improper read if get_registers() fail
Date: Tue, 13 Aug 2019 22:18:11 -0400
Message-ID: <20190814021834.16662-22-sashal@kernel.org> (raw)
In-Reply-To: <20190814021834.16662-1-sashal@kernel.org>

From: Denis Kirjanov <kda@linux-powerpc.org>

[ Upstream commit 224c04973db1125fcebefffd86115f99f50f8277 ]

get_registers() may fail with -ENOMEM and in this
case we can read a garbage from the status variable tmp.

Reported-by: syzbot+3499a83b2d062ae409d4@syzkaller.appspotmail.com
Signed-off-by: Denis Kirjanov <kda@linux-powerpc.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/pegasus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/usb/pegasus.c b/drivers/net/usb/pegasus.c
index 6514c86f043ee..5435c34dfcc76 100644
--- a/drivers/net/usb/pegasus.c
+++ b/drivers/net/usb/pegasus.c
@@ -285,7 +285,7 @@ static void mdio_write(struct net_device *dev, int phy_id, int loc, int val)
 static int read_eprom_word(pegasus_t *pegasus, __u8 index, __u16 *retdata)
 {
 	int i;
-	__u8 tmp;
+	__u8 tmp = 0;
 	__le16 retdatai;
 	int ret;
 
-- 
2.20.1


  parent reply index

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-14  2:17 [PATCH AUTOSEL 4.14 01/44] iio: adc: max9611: Fix misuse of GENMASK macro Sasha Levin
2019-08-14  2:17 ` [PATCH AUTOSEL 4.14 02/44] HID: Add 044f:b320 ThrustMaster, Inc. 2 in 1 DT Sasha Levin
2019-08-14  2:17 ` [PATCH AUTOSEL 4.14 03/44] MIPS: kernel: only use i8253 clocksource with periodic clockevent Sasha Levin
2019-08-14  2:17 ` [PATCH AUTOSEL 4.14 04/44] mips: fix cacheinfo Sasha Levin
2019-08-14  2:17 ` [PATCH AUTOSEL 4.14 05/44] netfilter: ebtables: fix a memory leak bug in compat Sasha Levin
2019-08-14  2:17 ` [PATCH AUTOSEL 4.14 06/44] ASoC: dapm: Fix handling of custom_stop_condition on DAPM graph walks Sasha Levin
2019-08-14  2:17 ` [PATCH AUTOSEL 4.14 07/44] bonding: Force slave speed check after link state recovery for 802.3ad Sasha Levin
2019-08-14  2:17 ` [PATCH AUTOSEL 4.14 08/44] can: dev: call netif_carrier_off() in register_candev() Sasha Levin
2019-08-14  2:17 ` [PATCH AUTOSEL 4.14 09/44] ASoC: Fail card instantiation if DAI format setup fails Sasha Levin
2019-08-14  2:17 ` [PATCH AUTOSEL 4.14 10/44] st21nfca_connectivity_event_received: null check the allocation Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 11/44] st_nci_hci_connectivity_event_received: " Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 12/44] ASoC: ti: davinci-mcasp: Correct slot_width posed constraint Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 13/44] net: usb: qmi_wwan: Add the BroadMobi BM818 card Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 14/44] qed: RDMA - Fix the hw_ver returned in device attributes Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 15/44] isdn: mISDN: hfcsusb: Fix possible null-pointer dereferences in start_isoc_chain() Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 16/44] netfilter: ipset: Fix rename concurrency with listing Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 17/44] netfilter: ebtables: also count base chain policies Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 18/44] driver core: Fix use-after-free and double free on glue directory Sasha Levin
2019-08-14  7:37   ` Greg Kroah-Hartman
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 19/44] isdn: hfcsusb: Fix mISDN driver crash caused by transfer buffer on the stack Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 20/44] perf bench numa: Fix cpu0 binding Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 21/44] Input: kbtab - sanity check for endpoint type Sasha Levin
2019-08-14  2:18 ` Sasha Levin [this message]
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 23/44] can: sja1000: force the string buffer NULL-terminated Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 24/44] can: peak_usb: " Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 25/44] net/ethernet/qlogic/qed: " Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 26/44] NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim() Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 27/44] HID: holtek: test for sanity of intfdata Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 28/44] HID: input: fix a4tech horizontal wheel custom usage Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 29/44] SMB3: Kernel oops mounting a encryptData share with CONFIG_DEBUG_VIRTUAL Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 30/44] HID: hiddev: avoid opening a disconnected device Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 31/44] HID: hiddev: do cleanup in failure of opening a device Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 32/44] Input: iforce - add sanity checks Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 33/44] net: cxgb3_main: Fix a resource leak in a error path in 'init_one()' Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 34/44] net: hisilicon: make hip04_tx_reclaim non-reentrant Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 35/44] net: hisilicon: fix hip04-xmit never return TX_BUSY Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 36/44] net: hisilicon: Fix dma_map_single failed on arm64 Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 37/44] libata: have ata_scsi_rw_xlat() fail invalid passthrough requests Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 38/44] libata: add SG safety checks in SFF pio transfers Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 39/44] x86/lib/cpu: Address missing prototypes warning Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 40/44] drm/vmwgfx: fix memory leak when too many retries have occurred Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 41/44] perf ftrace: Fix failure to set cpumask when only one cpu is present Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 42/44] perf cpumap: Fix writing to illegal memory in handling cpumap mask Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 43/44] perf pmu-events: Fix missing "cpu_clk_unhalted.core" event Sasha Levin
2019-08-14  2:18 ` [PATCH AUTOSEL 4.14 44/44] selftests: kvm: Adding config fragments Sasha Levin

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