3.19.8-ckt10 -stable review patch.  If anyone has any objections, please let me 
know.

------------------

From: Ben Hutchings <b...@decadent.org.uk>

commit 0baa57d8dc32db78369d8b5176ef56c5e2e18ab3 upstream.

Compile-tested only.

Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
Signed-off-by: David S. Miller <da...@davemloft.net>
Reference: CVE-2015-7799
Signed-off-by: Kamal Mostafa <ka...@canonical.com>
---
 drivers/isdn/i4l/isdn_ppp.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/isdn/i4l/isdn_ppp.c b/drivers/isdn/i4l/isdn_ppp.c
index c4198fa..86f9abe 100644
--- a/drivers/isdn/i4l/isdn_ppp.c
+++ b/drivers/isdn/i4l/isdn_ppp.c
@@ -301,6 +301,8 @@ isdn_ppp_open(int min, struct file *file)
        is->compflags = 0;
 
        is->reset = isdn_ppp_ccp_reset_alloc(is);
+       if (!is->reset)
+               return -ENOMEM;
 
        is->lp = NULL;
        is->mp_seqno = 0;       /* MP sequence number */
@@ -320,6 +322,10 @@ isdn_ppp_open(int min, struct file *file)
         * VJ header compression init
         */
        is->slcomp = slhc_init(16, 16); /* not necessary for 2. link in bundle 
*/
+       if (!is->slcomp) {
+               isdn_ppp_ccp_reset_free(is);
+               return -ENOMEM;
+       }
 #endif
 #ifdef CONFIG_IPPP_FILTER
        is->pass_filter = NULL;
-- 
1.9.1

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