aboutsummaryrefslogtreecommitdiffstats
path: root/meta/recipes-devtools/qemu/qemu/CVE-2021-3527-2.patch
diff options
context:
space:
mode:
Diffstat (limited to 'meta/recipes-devtools/qemu/qemu/CVE-2021-3527-2.patch')
-rw-r--r--meta/recipes-devtools/qemu/qemu/CVE-2021-3527-2.patch59
1 files changed, 59 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2021-3527-2.patch b/meta/recipes-devtools/qemu/qemu/CVE-2021-3527-2.patch
new file mode 100644
index 0000000000..6371aced12
--- /dev/null
+++ b/meta/recipes-devtools/qemu/qemu/CVE-2021-3527-2.patch
@@ -0,0 +1,59 @@
+From 7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986 Mon Sep 17 00:00:00 2001
+From: Gerd Hoffmann <kraxel@redhat.com>
+Date: Mon, 3 May 2021 15:29:12 +0200
+Subject: [PATCH] usb/redir: avoid dynamic stack allocation (CVE-2021-3527)
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Use autofree heap allocation instead.
+
+Fixes: 4f4321c11ff ("usb: use iovecs in USBPacket")
+Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
+Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
+Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
+Message-Id: <20210503132915.2335822-3-kraxel@redhat.com>
+
+Upstream-Status: Backport
+https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986
+CVE: CVE-2021-3527
+Signed-off-by: Chee Yang Lee <chee.yang.lee@intel.com>
+
+---
+ hw/usb/redirect.c | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c
+index 17f06f3417..6a75b0dc4a 100644
+--- a/hw/usb/redirect.c
++++ b/hw/usb/redirect.c
+@@ -620,7 +620,7 @@ static void usbredir_handle_iso_data(USBRedirDevice *dev, USBPacket *p,
+ .endpoint = ep,
+ .length = p->iov.size
+ };
+- uint8_t buf[p->iov.size];
++ g_autofree uint8_t *buf = g_malloc(p->iov.size);
+ /* No id, we look at the ep when receiving a status back */
+ usb_packet_copy(p, buf, p->iov.size);
+ usbredirparser_send_iso_packet(dev->parser, 0, &iso_packet,
+@@ -818,7 +818,7 @@ static void usbredir_handle_bulk_data(USBRedirDevice *dev, USBPacket *p,
+ usbredirparser_send_bulk_packet(dev->parser, p->id,
+ &bulk_packet, NULL, 0);
+ } else {
+- uint8_t buf[size];
++ g_autofree uint8_t *buf = g_malloc(size);
+ usb_packet_copy(p, buf, size);
+ usbredir_log_data(dev, "bulk data out:", buf, size);
+ usbredirparser_send_bulk_packet(dev->parser, p->id,
+@@ -923,7 +923,7 @@ static void usbredir_handle_interrupt_out_data(USBRedirDevice *dev,
+ USBPacket *p, uint8_t ep)
+ {
+ struct usb_redir_interrupt_packet_header interrupt_packet;
+- uint8_t buf[p->iov.size];
++ g_autofree uint8_t *buf = g_malloc(p->iov.size);
+
+ DPRINTF("interrupt-out ep %02X len %zd id %"PRIu64"\n", ep,
+ p->iov.size, p->id);
+--
+GitLab
+