1 files changed, 46 insertions, 0 deletions
diff --git a/app-emulation/qemu/files/qemu-2.8.0-CVE-2017-5931.patch b/app-emulation/qemu/files/qemu-2.8.0-CVE-2017-5931.patch
new file mode 100644
index 00000000000..f24d557c96d
--- /dev/null
+++ b/app-emulation/qemu/files/qemu-2.8.0-CVE-2017-5931.patch
@@ -0,0 +1,46 @@
+From a08aaff811fb194950f79711d2afe5a892ae03a4 Mon Sep 17 00:00:00 2001
+From: Gonglei <arei.gonglei@huawei.com>
+Date: Tue, 3 Jan 2017 14:50:03 +0800
+Subject: [PATCH] virtio-crypto: fix possible integer and heap overflow
+
+Because the 'size_t' type is 4 bytes in 32-bit platform, which
+is the same with 'int'. It's easy to make 'max_len' to zero when
+integer overflow and then cause heap overflow if 'max_len' is zero.
+
+Using uint_64 instead of size_t to avoid the integer overflow.
+
+Cc: qemu-stable@nongnu.org
+Reported-by: Li Qiang <liqiang6-s@360.cn>
+Signed-off-by: Gonglei <arei.gonglei@huawei.com>
+Tested-by: Li Qiang <liqiang6-s@360.cn>
+Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
+Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
+---
+ hw/virtio/virtio-crypto.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c
+index 2f2467e..c23e1ad 100644
+--- a/hw/virtio/virtio-crypto.c
++++ b/hw/virtio/virtio-crypto.c
+@@ -416,7 +416,7 @@ virtio_crypto_sym_op_helper(VirtIODevice *vdev,
+     uint32_t hash_start_src_offset = 0, len_to_hash = 0;
+     uint32_t cipher_start_src_offset = 0, len_to_cipher = 0;
+ 
+-    size_t max_len, curr_size = 0;
++    uint64_t max_len, curr_size = 0;
+     size_t s;
+ 
+     /* Plain cipher */
+@@ -441,7 +441,7 @@ virtio_crypto_sym_op_helper(VirtIODevice *vdev,
+         return NULL;
+     }
+ 
+-    max_len = iv_len + aad_len + src_len + dst_len + hash_result_len;
++    max_len = (uint64_t)iv_len + aad_len + src_len + dst_len + hash_result_len;
+     if (unlikely(max_len > vcrypto->conf.max_size)) {
+         virtio_error(vdev, "virtio-crypto too big length");
+         return NULL;
+-- 
+2.10.2
+