ttusb-dec: CVE-2014-8884

Fixes buffer overflow in ioctl.

Reference:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8884

Upstream fix:
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/
?id=482c6cb2dfb40838d67b0ba844b4b3d0af0f3d20

Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
Signed-off-by: Zhenhua Luo <zhenhua.luo@nxp.com>

2 files changed, 38 insertions, 0 deletions

diff --git a/recipes-kernel/linux/files/media-ttusb-dec-CVE-2014-8884.patch b/recipes-kernel/linux/files/media-ttusb-dec-CVE-2014-8884.patch
new file mode 100644
index 0000000..ae27944
--- /dev/null
+++ b/recipes-kernel/linux/files/media-ttusb-dec-CVE-2014-8884.patch
@@ -0,0 +1,37 @@
+commit 482c6cb2dfb40838d67b0ba844b4b3d0af0f3d20
+Author: Dan Carpenter <dan.carpenter@oracle.com>
+Date: Fri, 5 Sep 2014 09:09:28 -0300
+Subject: [media] ttusb-dec: buffer overflow in ioctl
+
+commit f2e323ec96077642d397bb1c355def536d489d16 upstream.
+
+We need to add a limit check here so we don't overflow the buffer.
+
+Fixes CVE-2014-8884
+Upstream-Status: Backport
+
+Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
+Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
+Signed-off-by: Jiri Slaby <jslaby@suse.cz>
+Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
+---
+ drivers/media/usb/ttusb-dec/ttusbdecfe.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/drivers/media/usb/ttusb-dec/ttusbdecfe.c b/drivers/media/usb/ttusb-dec/ttusbdecfe.c
+index 5c45c9d..9c29552 100644
+--- a/drivers/media/usb/ttusb-dec/ttusbdecfe.c
++++ b/drivers/media/usb/ttusb-dec/ttusbdecfe.c
+@@ -156,6 +156,9 @@ static int ttusbdecfe_dvbs_diseqc_send_master_cmd(struct dvb_frontend* fe, struc
+                   0x00, 0x00, 0x00, 0x00,
+                   0x00, 0x00 };
+ 
++       if (cmd->msg_len > sizeof(b) - 4)
++               return -EINVAL;
++
+        memcpy(&b[4], cmd->msg, cmd->msg_len);
+ 
+        state->config->send_command(fe, 0x72,
+-- 
+cgit v0.11.2
+
diff --git a/recipes-kernel/linux/linux-qoriq_3.12.bb b/recipes-kernel/linux/linux-qoriq_3.12.bb
index f078518..e89a289 100644
--- a/recipes-kernel/linux/linux-qoriq_3.12.bb
+++ b/recipes-kernel/linux/linux-qoriq_3.12.bb
@@ -34,6 +34,7 @@ SRC_URI = "git://git.freescale.com/ppc/sdk/linux.git;nobranch=1 \
     file://fs-isofs-CVE-2014-9420.patch \
     file://udp-CVE-2015-5364_CVE-2015-5366.patch \
     file://mm-CVE-2014-3122.patch \
+    file://media-ttusb-dec-CVE-2014-8884.patch \
 "
 SRCREV = "6619b8b55796cdf0cec04b66a71288edd3057229"