kernel-net-ppp: CVE-2015-8569

Fixes an information leak from getsockname.

References:
===========
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8569
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2015-8569

Reference to the upstream fixes:
===============================
https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/
patch/?id=f167b6f4244fbc8d05fcc385b1bf8e70729c9e7c

Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
Signed-off-by: Tudor Florea <tudor.florea@enea.com>

3 files changed, 48 insertions, 0 deletions

diff --git a/recipes-kernel/linux/linux-hierofalcon/net-ppp-CVE-2015-8569.patch b/recipes-kernel/linux/linux-hierofalcon/net-ppp-CVE-2015-8569.patch
new file mode 100644
index 0000000..0efaa09
--- /dev/null
+++ b/recipes-kernel/linux/linux-hierofalcon/net-ppp-CVE-2015-8569.patch
@@ -0,0 +1,46 @@
+From f167b6f4244fbc8d05fcc385b1bf8e70729c9e7c Mon Sep 17 00:00:00 2001
+From: WANG Cong <xiyou.wangcong@gmail.com>
+Date: Mon, 14 Dec 2015 13:48:36 -0800
+Subject: pptp: verify sockaddr_len in pptp_bind() and pptp_connect()
+
+[ Upstream commit 09ccfd238e5a0e670d8178cf50180ea81ae09ae1 ]
+
+CVE: CVE-2015-8569
+Upstream-Status: Backport
+
+Reported-by: Dmitry Vyukov <dvyukov@gmail.com>
+Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+Signed-off-by: Sona Sarmadi <sona.sarmadi@enea.com>
+---
+ drivers/net/ppp/pptp.c | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
+index e3bfbd4d..0bacabf 100644
+--- a/drivers/net/ppp/pptp.c
++++ b/drivers/net/ppp/pptp.c
+@@ -420,6 +420,9 @@ static int pptp_bind(struct socket *sock, struct sockaddr *uservaddr,
+        struct pptp_opt *opt = &po->proto.pptp;
+        int error = 0;
+ 
++       if (sockaddr_len < sizeof(struct sockaddr_pppox))
++               return -EINVAL;
++
+        lock_sock(sk);
+ 
+        opt->src_addr = sp->sa_addr.pptp;
+@@ -441,6 +444,9 @@ static int pptp_connect(struct socket *sock, struct sockaddr *uservaddr,
+        struct flowi4 fl4;
+        int error = 0;
+ 
++       if (sockaddr_len < sizeof(struct sockaddr_pppox))
++               return -EINVAL;
++
+        if (sp->sa_protocol != PX_PROTO_PPTP)
+                return -EINVAL;
+ 
+-- 
+cgit v0.12
+
diff --git a/recipes-kernel/linux/linux-hierofalcon_3.19.bb b/recipes-kernel/linux/linux-hierofalcon_3.19.bb
index 5419b62..5c24d8e 100644
--- a/recipes-kernel/linux/linux-hierofalcon_3.19.bb
+++ b/recipes-kernel/linux/linux-hierofalcon_3.19.bb
@@ -37,6 +37,7 @@ SRC_URI = "git://git.yoctoproject.org/linux-yocto-3.19;branch="standard/qemuarm6
            file://ALSA-CVE-2016-2546.patch \
            file://Btrfs-CVE-2015-8374.patch \
            file://ALSA-CVE-2016-2384.patch \
+           file://net-ppp-CVE-2015-8569.patch \
            "
 
 S = "${WORKDIR}/git"
diff --git a/recipes-kernel/linux/linux-hierofalcon_4.1.bb b/recipes-kernel/linux/linux-hierofalcon_4.1.bb
index 39c40dd..9a0f2d7 100644
--- a/recipes-kernel/linux/linux-hierofalcon_4.1.bb
+++ b/recipes-kernel/linux/linux-hierofalcon_4.1.bb
@@ -38,6 +38,7 @@ SRC_URI = "git://git.yoctoproject.org/linux-yocto-4.1;branch="standard/qemuarm64
            file://ALSA-CVE-2016-2546.patch \
            file://Btrfs-CVE-2015-8374.patch \
            file://ALSA-CVE-2016-2384.patch \
+           file://net-ppp-CVE-2015-8569.patch \
            "
 
 S = "${WORKDIR}/git"