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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Himadri Pandya <himadrispandya@gmail.com>,
	"David S . Miller" <davem@davemloft.net>,
	Sasha Levin <sashal@kernel.org>,
	linux-usb@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 5.4 17/43] net: usb: Fix uninit-was-stored issue in asix_read_phy_addr()
Date: Mon,  7 Sep 2020 12:33:03 -0400	[thread overview]
Message-ID: <20200907163329.1280888-17-sashal@kernel.org> (raw)
In-Reply-To: <20200907163329.1280888-1-sashal@kernel.org>

From: Himadri Pandya <himadrispandya@gmail.com>

[ Upstream commit a092b7233f0e000cc6f2c71a49e2ecc6f917a5fc ]

The buffer size is 2 Bytes and we expect to receive the same amount of
data. But sometimes we receive less data and run into uninit-was-stored
issue upon read. Hence modify the error check on the return value to match
with the buffer size as a prevention.

Reported-and-tested by: syzbot+a7e220df5a81d1ab400e@syzkaller.appspotmail.com
Signed-off-by: Himadri Pandya <himadrispandya@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/usb/asix_common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c
index e39f41efda3ec..7bc6e8f856fe0 100644
--- a/drivers/net/usb/asix_common.c
+++ b/drivers/net/usb/asix_common.c
@@ -296,7 +296,7 @@ int asix_read_phy_addr(struct usbnet *dev, int internal)
 
 	netdev_dbg(dev->net, "asix_get_phy_addr()\n");
 
-	if (ret < 0) {
+	if (ret < 2) {
 		netdev_err(dev->net, "Error reading PHYID register: %02x\n", ret);
 		goto out;
 	}
-- 
2.25.1


  parent reply	other threads:[~2020-09-07 16:58 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-09-07 16:32 [PATCH AUTOSEL 5.4 01/43] ARC: HSDK: wireup perf irq Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 02/43] dmaengine: acpi: Put the CSRT table after using it Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 03/43] netfilter: conntrack: allow sctp hearbeat after connection re-use Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 04/43] rxrpc: Keep the ACK serial in a var in rxrpc_input_ack() Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 05/43] drivers/net/wan/lapbether: Added needed_tailroom Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 06/43] NFC: st95hf: Fix memleak in st95hf_in_send_cmd Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 07/43] firestream: Fix memleak in fs_open Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 08/43] ALSA: hda: Fix 2 channel swapping for Tegra Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 09/43] ALSA: hda/tegra: Program WAKEEN register " Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 10/43] drivers/dma/dma-jz4780: Fix race condition between probe and irq handler Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 11/43] ibmvnic fix NULL tx_pools and rx_tools issue at do_reset Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 12/43] net: hns3: Fix for geneve tx checksum bug Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.4 13/43] xfs: fix off-by-one in inode alloc block reservation calculation Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 14/43] drivers/net/wan/lapbether: Set network_header before transmitting Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 15/43] cfg80211: regulatory: reject invalid hints Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 16/43] cfg80211: Adjust 6 GHz frequency to channel conversion Sasha Levin
2020-09-07 16:33 ` Sasha Levin [this message]
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 18/43] xfs: initialize the shortform attr header padding entry Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 19/43] irqchip/eznps: Fix build error for !ARC700 builds Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 20/43] nvmet-tcp: Fix NULL dereference when a connect data comes in h2cdata pdu Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 21/43] nvme-fabrics: don't check state NVME_CTRL_NEW for request acceptance Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 22/43] nvme: have nvme_wait_freeze_timeout return if it timed out Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 23/43] nvme-tcp: serialize controller teardown sequences Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 24/43] nvme-tcp: fix timeout handler Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 25/43] nvme-tcp: fix reset hang if controller died in the middle of a reset Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 26/43] nvme-rdma: serialize controller teardown sequences Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 27/43] nvme-rdma: fix timeout handler Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 28/43] nvme-rdma: fix reset hang if controller died in the middle of a reset Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 29/43] nvme-pci: cancel nvme device request before disabling Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 30/43] HID: quirks: Set INCREMENT_USAGE_ON_DUPLICATE for all Saitek X52 devices Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 31/43] HID: microsoft: Add rumble support for the 8bitdo SN30 Pro+ controller Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 32/43] drivers/net/wan/hdlc_cisco: Add hard_header_len Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 33/43] HID: elan: Fix memleak in elan_input_configured Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 34/43] ARC: [plat-hsdk]: Switch ethernet phy-mode to rgmii-id Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 35/43] cpufreq: intel_pstate: Refuse to turn off with HWP enabled Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 36/43] cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 37/43] net: usb: dm9601: Add USB ID of Keenetic Plus DSL Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 38/43] arm64/module: set trampoline section flags regardless of CONFIG_DYNAMIC_FTRACE Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 39/43] ALSA: hda: hdmi - add Rocketlake support Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 40/43] ALSA: hda: fix a runtime pm issue in SOF when integrated GPU is disabled Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 41/43] drm/amdgpu: Fix bug in reporting voltage for CIK Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 42/43] iommu/amd: Do not use IOMMUv2 functionality when SME is active Sasha Levin
2020-09-07 16:33 ` [PATCH AUTOSEL 5.4 43/43] gcov: Disable gcov build with GCC 10 Sasha Levin

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