File usb-hid-avoid-dynamic-stack-allocation.patch of Package qemu.30221

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File usb-hid-avoid-dynamic-stack-allocation.patch of Package qemu.30221

From: Gerd Hoffmann <kraxel@redhat.com>
Date: Mon, 3 May 2021 15:29:11 +0200
Subject: usb/hid: avoid dynamic stack allocation
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Git-commit: 3f67e2e7f135b8be4117f3c2960e78d894feaa03
References: bsc#1186012, CVE-2021-3527

Use autofree heap allocation instead.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210503132915.2335822-2-kraxel@redhat.com>
Signed-off-by: Jose R Ziviani <jose.ziviani@suse.com>
---
 hw/usb/dev-hid.c   | 2 +-
 hw/usb/dev-wacom.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/usb/dev-hid.c b/hw/usb/dev-hid.c
index 88492f26e64682f73978fa0358b7..7f5762adb252a31f4c2f7b18bb60 100644
--- a/hw/usb/dev-hid.c
+++ b/hw/usb/dev-hid.c
@@ -667,7 +667,7 @@ static void usb_hid_handle_data(USBDevice *dev, USBPacket *p)
 {
     USBHIDState *us = USB_HID(dev);
     HIDState *hs = &us->hid;
-    uint8_t buf[p->iov.size];
+    g_autofree uint8_t *buf = g_malloc(p->iov.size);
     int len = 0;
 
     switch (p->pid) {
diff --git a/hw/usb/dev-wacom.c b/hw/usb/dev-wacom.c
index 8ed57b3b44444ad0e07e65ae0929..022e44a758e3d458f0159c3b874e 100644
--- a/hw/usb/dev-wacom.c
+++ b/hw/usb/dev-wacom.c
@@ -306,7 +306,7 @@ static void usb_wacom_handle_control(USBDevice *dev, USBPacket *p,
 static void usb_wacom_handle_data(USBDevice *dev, USBPacket *p)
 {
     USBWacomState *s = (USBWacomState *) dev;
-    uint8_t buf[p->iov.size];
+    g_autofree uint8_t *buf = g_malloc(p->iov.size);
     int len = 0;
 
     switch (p->pid) {

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File usb-hid-avoid-dynamic-stack-allocation.patch of Package qemu.30221

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