libxml2: security fix CVE-2015-8035

(From OE-Core rev: 495eaf5039596ac0fab7684cfc867569710eb0f4)

Signed-off-by: Armin Kuster <akuster@mvista.com>
Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 39 insertions, 0 deletions

diff --git a/meta/recipes-core/libxml/libxml2.inc b/meta/recipes-core/libxml/libxml2.inc
index 56a99e8b6d..365d5bc7a6 100644
--- a/meta/recipes-core/libxml/libxml2.inc
+++ b/meta/recipes-core/libxml/libxml2.inc
@@ -28,6 +28,7 @@ SRC_URI = "ftp://xmlsoft.org/libxml2/libxml2-${PV}.tar.gz;name=libtar \
            file://CVE-2015-8317-Fail-parsing-early-on-if-encoding-conversion-failed.patch \
            file://CVE-2015-7942-Another-variation-of-overflow-in-Conditional-section.patch \
            file://CVE-2015-7942-2-Fix-an-error-in-previous-Conditional-section-patch.patch \
+           file://0001-CVE-2015-8035-Fix-XZ-compression-support-loop.patch \
           "
 
 BINCONFIG = "${bindir}/xml2-config"
diff --git a/meta/recipes-core/libxml/libxml2/0001-CVE-2015-8035-Fix-XZ-compression-support-loop.patch b/meta/recipes-core/libxml/libxml2/0001-CVE-2015-8035-Fix-XZ-compression-support-loop.patch
new file mode 100644
index 0000000000..7107355706
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/0001-CVE-2015-8035-Fix-XZ-compression-support-loop.patch
@@ -0,0 +1,38 @@
+From f0709e3ca8f8947f2d91ed34e92e38a4c23eae63 Mon Sep 17 00:00:00 2001
+From: Daniel Veillard <veillard@redhat.com>
+Date: Tue, 3 Nov 2015 15:31:25 +0800
+Subject: [PATCH] CVE-2015-8035 Fix XZ compression support loop
+
+For https://bugzilla.gnome.org/show_bug.cgi?id=757466
+DoS when parsing specially crafted XML document if XZ support
+is compiled in (which wasn't the case for 2.9.2 and master since
+Nov 2013, fixed in next commit !)
+
+Upstream-Status: Backport
+
+CVE-2015-8035
+
+Signed-off-by: Armin Kuster <akuster@mvista.com>
+
+---
+ xzlib.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/xzlib.c b/xzlib.c
+index 0dcb9f4..1fab546 100644
+--- a/xzlib.c
++++ b/xzlib.c
+@@ -581,6 +581,10 @@ xz_decomp(xz_statep state)
+             xz_error(state, LZMA_DATA_ERROR, "compressed data error");
+             return -1;
+         }
++        if (ret == LZMA_PROG_ERROR) {
++            xz_error(state, LZMA_PROG_ERROR, "compression error");
++            return -1;
++        }
+     } while (strm->avail_out && ret != LZMA_STREAM_END);
+ 
+     /* update available output and crc check value */
+-- 
+2.3.5
+