From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
syzbot+4993e4a0e237f1b53747@syzkaller.appspotmail.com,
Phillip Potter <phil@philpotter.co.uk>,
"David S. Miller" <davem@davemloft.net>
Subject: [PATCH 4.19 04/15] net: usb: ax88179_178a: initialize local variables before use
Date: Wed, 5 May 2021 14:05:09 +0200 [thread overview]
Message-ID: <20210505120503.923736092@linuxfoundation.org> (raw)
In-Reply-To: <20210505120503.781531508@linuxfoundation.org>
From: Phillip Potter <phil@philpotter.co.uk>
commit bd78980be1a68d14524c51c4b4170782fada622b upstream.
Use memset to initialize local array in drivers/net/usb/ax88179_178a.c, and
also set a local u16 and u32 variable to 0. Fixes a KMSAN found uninit-value bug
reported by syzbot at:
https://syzkaller.appspot.com/bug?id=00371c73c72f72487c1d0bfe0cc9d00de339d5aa
Reported-by: syzbot+4993e4a0e237f1b53747@syzkaller.appspotmail.com
Signed-off-by: Phillip Potter <phil@philpotter.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/usb/ax88179_178a.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/usb/ax88179_178a.c
+++ b/drivers/net/usb/ax88179_178a.c
@@ -307,12 +307,12 @@ static int ax88179_read_cmd(struct usbne
int ret;
if (2 == size) {
- u16 buf;
+ u16 buf = 0;
ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0);
le16_to_cpus(&buf);
*((u16 *)data) = buf;
} else if (4 == size) {
- u32 buf;
+ u32 buf = 0;
ret = __ax88179_read_cmd(dev, cmd, value, index, size, &buf, 0);
le32_to_cpus(&buf);
*((u32 *)data) = buf;
next prev parent reply other threads:[~2021-05-05 12:06 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-05 12:05 [PATCH 4.19 00/15] 4.19.190-rc1 review Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 01/15] erofs: fix extended inode could cross boundary Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 02/15] ACPI: tables: x86: Reserve memory occupied by ACPI tables Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 03/15] ACPI: x86: Call acpi_boot_table_init() after acpi_table_upgrade() Greg Kroah-Hartman
2021-05-05 12:05 ` Greg Kroah-Hartman [this message]
2021-05-05 12:05 ` [PATCH 4.19 05/15] iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd() Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 06/15] mips: Do not include hi and lo in clobber list for R6 Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 07/15] bpf: Fix masking negation logic upon negative dst register Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 08/15] iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_gen2_enqueue_hcmd() Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 09/15] ALSA: usb-audio: Add MIDI quirk for Vox ToneLab EX Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 10/15] USB: Add LPM quirk for Lenovo ThinkPad USB-C Dock Gen2 Ethernet Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 11/15] USB: Add reset-resume quirk for WD19s Realtek Hub Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 12/15] ASoC: ak4458: Add MODULE_DEVICE_TABLE Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 13/15] ASoC: ak5558: " Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 14/15] platform/x86: thinkpad_acpi: Correct thermal sensor allocation Greg Kroah-Hartman
2021-05-05 12:05 ` [PATCH 4.19 15/15] ovl: allow upperdir inside lowerdir Greg Kroah-Hartman
2021-05-05 21:06 ` [PATCH 4.19 00/15] 4.19.190-rc1 review Shuah Khan
2021-05-06 1:46 ` Guenter Roeck
2021-05-06 1:47 ` Guenter Roeck
2021-05-06 2:02 ` Guenter Roeck
2021-05-06 9:39 ` Naresh Kamboju
2021-05-06 10:02 ` Sudip Mukherjee
2021-05-06 21:46 ` Pavel Machek
2021-05-07 1:06 ` Samuel Zou
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