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 27/30] usbnet: sanity check for maxpacket
Date: Mon, 25 Oct 2021 21:14:47 +0200 [thread overview]
Message-ID: <20211025190928.836300328@linuxfoundation.org> (raw)
In-Reply-To: <20211025190922.089277904@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:[~2021-10-25 19:25 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-25 19:14 [PATCH 4.14 00/30] 4.14.253-rc1 review Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 01/30] btrfs: always wait on ordered extents at fsync time Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 02/30] ARM: dts: at91: sama5d2_som1_ek: disable ISC node by default Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 03/30] xtensa: xtfpga: use CONFIG_USE_OF instead of CONFIG_OF Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 04/30] xtensa: xtfpga: Try software restart before simulating CPU reset Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 05/30] NFSD: Keep existing listeners on portlist error Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 06/30] netfilter: ipvs: make global sysctl readonly in non-init netns Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 07/30] NIOS2: irqflags: rename a redefined register name Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 08/30] can: rcar_can: fix suspend/resume Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 09/30] can: peak_usb: pcan_usb_fd_decode_status(): fix back to ERROR_ACTIVE state notification Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 10/30] can: peak_pci: peak_pci_remove(): fix UAF Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 11/30] ocfs2: fix data corruption after conversion from inline format Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 12/30] ocfs2: mount fails with buffer overflow in strlen Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 13/30] elfcore: correct reference to CONFIG_UML Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 14/30] vfs: check fd has read access in kernel_read_file_from_fd() Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 15/30] ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 16/30] ASoC: DAPM: Fix missing kctl change notifications Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 17/30] nfc: nci: fix the UAF of rf_conn_info object Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 18/30] isdn: cpai: check ctr->cnr to avoid array index out of bound Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 19/30] netfilter: Kconfig: use default y instead of m for bool config option Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 20/30] btrfs: deal with errors when checking if a dir entry exists during log replay Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 21/30] net: stmmac: add support for dwmac 3.40a Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 22/30] ARM: dts: spear3xx: Fix gmac node Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 23/30] isdn: mISDN: Fix sleeping function called from invalid context Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 24/30] platform/x86: intel_scu_ipc: Update timeout value in comment Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 25/30] ALSA: hda: avoid write to STATESTS if controller is in reset Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 26/30] scsi: core: Fix shost->cmd_per_lun calculation in scsi_add_host_with_dma() Greg Kroah-Hartman
2021-10-25 19:14 ` Greg Kroah-Hartman [this message]
2021-10-25 19:14 ` [PATCH 4.14 28/30] net: mdiobus: Fix memory leak in __mdiobus_register Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 29/30] tracing: Have all levels of checks prevent recursion Greg Kroah-Hartman
2021-10-25 19:14 ` [PATCH 4.14 30/30] ARM: 9122/1: select HAVE_FUTEX_CMPXCHG Greg Kroah-Hartman
2021-10-26 9:20 ` [PATCH 4.14 00/30] 4.14.253-rc1 review Jon Hunter
2021-10-26 13:30 ` Naresh Kamboju
2021-10-26 19:15 ` Guenter Roeck
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