1 files changed, 51 insertions, 0 deletions
diff --git a/meta/recipes-devtools/qemu/qemu/CVE-2018-17963.patch b/meta/recipes-devtools/qemu/qemu/CVE-2018-17963.patch
new file mode 100644
index 0000000000..054cdc8674
--- /dev/null
+++ b/meta/recipes-devtools/qemu/qemu/CVE-2018-17963.patch
@@ -0,0 +1,51 @@
+From e5ff72a8005dd1d9c0f63f8a9cc4298df5bb7551 Mon Sep 17 00:00:00 2001
+From: Changqing Li <changqing.li@windriver.com>
+Date: Mon, 15 Oct 2018 16:39:46 +0800
+Subject: [PATCH] pcnet: fix possible buffer overflow
+
+In pcnet_receive(), we try to assign size_ to size which converts from
+size_t to integer. This will cause troubles when size_ is greater
+INT_MAX, this will lead a negative value in size and it can then pass
+the check of size < MIN_BUF_SIZE which may lead out of bound access
+for both buf and buf1.
+
+Fixing by converting the type of size to size_t.
+
+CC: address@hidden
+Reported-by: Daniel Shapira <address@hidden>
+Reviewed-by: Michael S. Tsirkin <address@hidden>
+Signed-off-by: Jason Wang <address@hidden>
+
+Upstream-Status: Backport [https://lists.gnu.org/archive/html/qemu-devel/2018-09/msg03268.html]
+
+CVE: CVE-2018-17963
+
+Signed-off-by: Changqing Li <changqing.li@windriver.com>
+---
+ hw/net/pcnet.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/hw/net/pcnet.c b/hw/net/pcnet.c
+index 0c44554..d9ba04b 100644
+--- a/hw/net/pcnet.c
++++ b/hw/net/pcnet.c
+@@ -988,14 +988,14 @@ ssize_t pcnet_receive(NetClientState *nc, const uint8_t *buf, size_t size_)
+     uint8_t buf1[60];
+     int remaining;
+     int crc_err = 0;
+-    int size = size_;
++    size_t size = size_;
+ 
+     if (CSR_DRX(s) || CSR_STOP(s) || CSR_SPND(s) || !size ||
+         (CSR_LOOP(s) && !s->looptest)) {
+         return -1;
+     }
+ #ifdef PCNET_DEBUG
+-    printf("pcnet_receive size=%d\n", size);
++    printf("pcnet_receive size=%zu\n", size);
+ #endif
+ 
+     /* if too small buffer, then expand it */
+-- 
+2.7.4
+