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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 5.8 22/53] net: usb: Fix uninit-was-stored issue in asix_read_phy_addr()
Date: Mon, 7 Sep 2020 12:31:48 -0400 [thread overview]
Message-ID: <20200907163220.1280412-22-sashal@kernel.org> (raw)
In-Reply-To: <20200907163220.1280412-1-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
next prev parent reply other threads:[~2020-09-07 17:10 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200907163220.1280412-1-sashal@kernel.org>
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 04/53] netfilter: conntrack: allow sctp hearbeat after connection re-use Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 05/53] rxrpc: Keep the ACK serial in a var in rxrpc_input_ack() Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 06/53] netfilter: nft_set_rbtree: Detect partial overlap with start endpoint match Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 07/53] drivers/net/wan/lapbether: Added needed_tailroom Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 08/53] NFC: st95hf: Fix memleak in st95hf_in_send_cmd Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 09/53] firestream: Fix memleak in fs_open Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 14/53] ibmvnic fix NULL tx_pools and rx_tools issue at do_reset Sasha Levin
2020-09-07 21:10 ` Jakub Kicinski
2020-09-07 22:24 ` Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 15/53] net: hns3: Fix for geneve tx checksum bug Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 17/53] drivers/net/wan/lapbether: Set network_header before transmitting Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 18/53] wireless: fix wrong 160/80+80 MHz setting Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 19/53] cfg80211: regulatory: reject invalid hints Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 20/53] mac80211: reduce packet loss event false positives Sasha Levin
2020-09-07 16:31 ` [PATCH AUTOSEL 5.8 21/53] cfg80211: Adjust 6 GHz frequency to channel conversion Sasha Levin
2020-09-07 16:31 ` Sasha Levin [this message]
2020-09-07 16:32 ` [PATCH AUTOSEL 5.8 39/53] drivers/net/wan/hdlc_cisco: Add hard_header_len Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.8 44/53] net: usb: dm9601: Add USB ID of Keenetic Plus DSL Sasha Levin
2020-09-07 16:32 ` [PATCH AUTOSEL 5.8 49/53] drivers/net/wan/hdlc: Change the default of hard_header_len to 0 Sasha Levin
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