From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Oliver Neukum <oneukum@suse.com>,
syzbot+76bb1d34ffa0adc03baa@syzkaller.appspotmail.com,
Johan Hovold <johan@kernel.org>, Jakub Kicinski <kuba@kernel.org>
Subject: [PATCH 4.14 06/25] usbnet: sanity check for maxpacket
Date: Mon, 1 Nov 2021 10:17:18 +0100 [thread overview]
Message-ID: <20211101082448.493704511@linuxfoundation.org> (raw)
In-Reply-To: <20211101082447.070493993@linuxfoundation.org>
From: Oliver Neukum <oneukum@suse.com>
commit 397430b50a363d8b7bdda00522123f82df6adc5e upstream.
maxpacket of 0 makes no sense and oopses as we need to divide
by it. Give up.
V2: fixed typo in log and stylistic issues
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Reported-by: syzbot+76bb1d34ffa0adc03baa@syzkaller.appspotmail.com
Reviewed-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20211021122944.21816-1-oneukum@suse.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/net/usb/usbnet.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -1788,6 +1788,10 @@ usbnet_probe (struct usb_interface *udev
if (!dev->rx_urb_size)
dev->rx_urb_size = dev->hard_mtu;
dev->maxpacket = usb_maxpacket (dev->udev, dev->out, 1);
+ if (dev->maxpacket == 0) {
+ /* that is a broken device */
+ goto out4;
+ }
/* let userspace know we have a random address */
if (ether_addr_equal(net->dev_addr, node_id))
next prev parent reply other threads:[~2021-11-01 9:23 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-01 9:17 [PATCH 4.14 00/25] 4.14.254-rc1 review Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 01/25] ARM: 9133/1: mm: proc-macros: ensure *_tlb_fns are 4B aligned Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 02/25] ARM: 9134/1: remove duplicate memcpy() definition Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 03/25] ARM: 9139/1: kprobes: fix arch_init_kprobes() prototype Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 04/25] powerpc/bpf: Fix BPF_MOD when imm == 1 Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 05/25] ARM: 8819/1: Remove -p from LDFLAGS Greg Kroah-Hartman
2021-11-01 9:17 ` Greg Kroah-Hartman [this message]
2021-11-01 9:17 ` [PATCH 4.14 07/25] usbnet: fix error return code in usbnet_probe() Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 08/25] ata: sata_mv: Fix the error handling of mv_chip_id() Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 09/25] nfc: port100: fix using -ERRNO as command type mask Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 10/25] Revert "net: mdiobus: Fix memory leak in __mdiobus_register" Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 11/25] ipv4: use siphash instead of Jenkins in fnhe_hashfun() Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 12/25] mmc: vub300: fix control-message timeouts Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 13/25] mmc: dw_mmc: exynos: fix the finding clock sample value Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 14/25] mmc: sdhci: Map more voltage level to SDHCI_POWER_330 Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 15/25] mmc: sdhci-esdhc-imx: clear the buffer_read_ready to reset standard tuning circuit Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 16/25] net: lan78xx: fix division by zero in send path Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 17/25] regmap: Fix possible double-free in regcache_rbtree_exit() Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 18/25] net: batman-adv: fix error handling Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 19/25] nios2: Make NIOS2_DTB_SOURCE_BOOL depend on !COMPILE_TEST Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 20/25] net: nxp: lpc_eth.c: avoid hang when bringing interface down Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 21/25] sctp: use init_tag from inithdr for ABORT chunk Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 22/25] sctp: fix the processing for COOKIE_ECHO chunk Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 23/25] sctp: add vtag check in sctp_sf_violation Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 24/25] sctp: add vtag check in sctp_sf_do_8_5_1_E_sa Greg Kroah-Hartman
2021-11-01 9:17 ` [PATCH 4.14 25/25] sctp: add vtag check in sctp_sf_ootb Greg Kroah-Hartman
2021-11-01 11:14 ` [PATCH 4.14 00/25] 4.14.254-rc1 review Naresh Kamboju
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