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-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20180115123407.061068842@linuxfoundation.org>
Date:   Mon, 15 Jan 2018 13:34:29 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Ben Hutchings <ben.hutchings@...ethink.co.uk>,
        Mathias Nyman <mathias.nyman@...el.com>
Subject: [PATCH 4.9 30/96] xhci: Fix ring leak in failure path of xhci_alloc_virt_device()

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <ben.hutchings@...ethink.co.uk>

This is a stable-only fix for the backport of commit 5d9b70f7d52e
("xhci: Don't add a virt_dev to the devs array before it's fully
allocated").

In branches that predate commit c5628a2af83a ("xhci: remove endpoint
ring cache") there is an additional failure path in
xhci_alloc_virt_device() where ring cache allocation fails, in
which case we need to free the ring allocated for endpoint 0.

Signed-off-by: Ben Hutchings <ben.hutchings@...ethink.co.uk>
Cc: Mathias Nyman <mathias.nyman@...el.com>
---
This is build-tested only.

Ben.

 drivers/usb/host/xhci-mem.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -1086,7 +1086,8 @@ int xhci_alloc_virt_device(struct xhci_h
 
 	return 1;
 fail:
-
+	if (dev->eps[0].ring)
+		xhci_ring_free(xhci, dev->eps[0].ring);
 	if (dev->in_ctx)
 		xhci_free_container_ctx(xhci, dev->in_ctx);
 	if (dev->out_ctx)


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ