From: Junjie Cao <junjie.cao@linux.dev>
To: qemu-devel@nongnu.org
Cc: thuth@redhat.com, kraxel@redhat.com, philmd@oss.qualcomm.com,
marcandre.lureau@redhat.com, junjie.cao@linux.dev
Subject: [PATCH v2 0/2] usb-host: validate and release configuration descriptors
Date: Mon, 5 Oct 2026 00:46:24 -0500 [thread overview]
Message-ID: <20261005054626.131577-1-junjie.cao@linux.dev> (raw)
The libusb host backend reads interface numbers from the active
configuration descriptor while opening a device. An out-of-range number
can index past USBDevice.altsetting. The backend also leaves an allocated
descriptor behind on endpoint parse and interface claim failures.
Changes in v2:
- Use g_autoptr for configuration descriptors in usb_host_ep_update() and
usb_host_claim_interfaces() (Marc-André).
- Collected tags from Marc-André.
v1: https://lore.kernel.org/qemu-devel/20261004042722.6937-1-junjie.cao@linux.dev/
Junjie Cao (2):
usb-host: validate interface number before indexing altsetting
usb-host: free configuration descriptors on error paths
hw/usb/host-libusb.c | 18 ++++++++++++------
1 file changed, 12 insertions(+), 6 deletions(-)
base-commit: d7a65d1793d691d356a56833620f7d1e6f5d653b
--
2.43.0
next reply other threads:[~2026-10-05 5:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-05 5:46 Junjie Cao [this message]
2026-10-05 5:46 ` [PATCH v2 1/2] usb-host: validate interface number before indexing altsetting Junjie Cao
2026-10-05 5:46 ` [PATCH v2 2/2] usb-host: free configuration descriptors on error paths Junjie Cao
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