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CVE-2015-7566 usb: visor: Crash on invalid USB dev descriptors (rhbz 1296466 1297517)

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This commit is contained in:
Josh Boyer 2016-01-12 13:12:57 -05:00
parent c40143140b
commit 0c2a2f5349
2 changed files with 40 additions and 0 deletions
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4
kernel.spec
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@ -627,6 +627,9 @@ Patch621: drm-udl-Use-unlocked-gem-unreferencing.patch
#rhbz 1083853
Patch622: PNP-Add-Broadwell-to-Intel-MCH-size-workaround.patch
#CVE-2015-7566 rhbz 1296466 1297517
Patch623: usb-serial-visor-fix-crash-on-detecting-device-witho.patch
# END OF PATCH DEFINITIONS
%endif
@ -2071,6 +2074,7 @@ fi
#
%changelog
* Tue Jan 12 2016 Josh Boyer <jwboyer@fedoraproject.org>
- CVE-2015-7566 usb: visor: Crash on invalid USB dev descriptors (rhbz 1296466 1297517)
- Fix backtrace from PNP conflict on Broadwell (rhbz 1083853)
* Mon Jan 11 2016 Laura Abbott <labbott@redhat.com> - 4.4.0-1

36
usb-serial-visor-fix-crash-on-detecting-device-witho.patch Normal file
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@ -0,0 +1,36 @@
From b2476fe4c16be5c2b7ee950e50677cfaa9ab9bae Mon Sep 17 00:00:00 2001
From: Vladis Dronov <vdronov@redhat.com>
Date: Tue, 12 Jan 2016 14:10:50 -0500
Subject: [PATCH] usb: serial: visor: fix crash on detecting device without
write_urbs
The visor driver crashes in clie_5_attach() when a specially crafted USB
device without bulk-out endpoint is detected. This fix adds a check that
the device has proper configuration expected by the driver.
Reported-by: Ralf Spenneberg <ralf@spenneberg.net>
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
---
drivers/usb/serial/visor.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index 60afb39eb73c..bbc90c059002 100644
--- a/drivers/usb/serial/visor.c
+++ b/drivers/usb/serial/visor.c
@@ -597,8 +597,10 @@ static int clie_5_attach(struct usb_serial *serial)
*/
/* some sanity check */
- if (serial->num_ports < 2)
- return -1;
+ if (serial->num_bulk_out < 2) {
+ dev_err(&serial->interface->dev, "missing bulk out endpoints\n");
+ return -ENODEV;
+ }
/* port 0 now uses the modified endpoint Address */
port = serial->port[0];
--
2.5.0