linux-kernel - [PATCH 1/3] usbip: only dump valid port status

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <4DF68151.4080109@freemail.hu>
Date:	Mon, 13 Jun 2011 23:29:53 +0200
From:	Németh Márton <nm127@...email.hu>
To:	Greg Kroah-Hartman <gregkh@...e.de>,
	Matt Mooney <mfm@...eddisk.com>,
	Max Vozeler <max@...terhof.net>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	usbip-devel@...ts.sourceforge.net, devel@...verdev.osuosl.org
CC:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/3] usbip: only dump valid port status

From: Márton Németh <nm127@...email.hu>

The wIndex parameter of vhci_hub_control() is always zero when the
request type is GetHubDescriptor, see drivers/usb/core/hub.c::get_hub_descriptor()
and Universal Serial Bus Specification revision 2.0 (April 27, 2000) Section
11.24.2.5 "Get Hub Descriptor". This means the variable rhport will not contain
any useful index. Only use valid rhport values.

Signed-off-by: Márton Németh <nm127@...email.hu>
---
 drivers/staging/usbip/vhci_hcd.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/staging/usbip/vhci_hcd.c b/drivers/staging/usbip/vhci_hcd.c
index 359b464..512a97f 100644
--- a/drivers/staging/usbip/vhci_hcd.c
+++ b/drivers/staging/usbip/vhci_hcd.c
@@ -464,8 +464,11 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,

 	if (usbip_dbg_flag_vhci_rh) {
 		pr_debug("port %d\n", rhport);
-		dump_port_status(prev_port_status[rhport]);
-		dump_port_status(dum->port_status[rhport]);
+		/* Only dump valid port status */
+		if (0 <= rhport) {
+			dump_port_status(prev_port_status[rhport]);
+			dump_port_status(dum->port_status[rhport]);
+		}
 	}
 	usbip_dbg_vhci_rh(" bye\n");

-- 
1.7.2.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/