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authorHongxu Jia <hongxu.jia@windriver.com>2018-08-17 15:22:41 +0800
committerRichard Purdie <richard.purdie@linuxfoundation.org>2018-08-20 11:59:44 +0100
commitb91b276696fb5e0b633b73be408bd750ac4e28ce (patch)
treedd69217a9c7a21c74596ddd4bbc6de016e8f232e /meta/recipes-core/libxml
parente6264f433d93b658624d26dfe2403b27d2b41556 (diff)
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libxml2: fix CVE-2018-9251 and CVE-2018-14567
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-core/libxml')
-rw-r--r--meta/recipes-core/libxml/libxml2/0001-Fix-infinite-loop-in-LZMA-decompression.patch55
-rw-r--r--meta/recipes-core/libxml/libxml2_2.9.8.bb1
2 files changed, 56 insertions, 0 deletions
diff --git a/meta/recipes-core/libxml/libxml2/0001-Fix-infinite-loop-in-LZMA-decompression.patch b/meta/recipes-core/libxml/libxml2/0001-Fix-infinite-loop-in-LZMA-decompression.patch
new file mode 100644
index 0000000000..16c229574c
--- /dev/null
+++ b/meta/recipes-core/libxml/libxml2/0001-Fix-infinite-loop-in-LZMA-decompression.patch
@@ -0,0 +1,55 @@
+From 28a9dc642ffd759df1e48be247a114f440a6c16e Mon Sep 17 00:00:00 2001
+From: Nick Wellnhofer <wellnhofer@aevum.de>
+Date: Mon, 30 Jul 2018 13:14:11 +0200
+Subject: [PATCH] Fix infinite loop in LZMA decompression
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Check the liblzma error code more thoroughly to avoid infinite loops.
+
+Closes: https://gitlab.gnome.org/GNOME/libxml2/issues/13
+Closes: https://bugzilla.gnome.org/show_bug.cgi?id=794914
+
+This is CVE-2018-9251 and CVE-2018-14567.
+
+Thanks to Dongliang Mu and Simon W├Ârner for the reports.
+
+CVE: CVE-2018-9251
+CVE: CVE-2018-14567
+Upstream-Status: Backport [https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74]
+Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
+---
+ xzlib.c | 9 +++++++++
+ 1 file changed, 9 insertions(+)
+
+diff --git a/xzlib.c b/xzlib.c
+index a839169..0ba88cf 100644
+--- a/xzlib.c
++++ b/xzlib.c
+@@ -562,6 +562,10 @@ xz_decomp(xz_statep state)
+ "internal error: inflate stream corrupt");
+ return -1;
+ }
++ /*
++ * FIXME: Remapping a couple of error codes and falling through
++ * to the LZMA error handling looks fragile.
++ */
+ if (ret == Z_MEM_ERROR)
+ ret = LZMA_MEM_ERROR;
+ if (ret == Z_DATA_ERROR)
+@@ -587,6 +591,11 @@ xz_decomp(xz_statep state)
+ xz_error(state, LZMA_PROG_ERROR, "compression error");
+ return -1;
+ }
++ if ((state->how != GZIP) &&
++ (ret != LZMA_OK) && (ret != LZMA_STREAM_END)) {
++ xz_error(state, ret, "lzma error");
++ return -1;
++ }
+ } while (strm->avail_out && ret != LZMA_STREAM_END);
+
+ /* update available output and crc check value */
+--
+2.7.4
+
diff --git a/meta/recipes-core/libxml/libxml2_2.9.8.bb b/meta/recipes-core/libxml/libxml2_2.9.8.bb
index 4ebd2ef383..f01cb2cd34 100644
--- a/meta/recipes-core/libxml/libxml2_2.9.8.bb
+++ b/meta/recipes-core/libxml/libxml2_2.9.8.bb
@@ -22,6 +22,7 @@ SRC_URI = "http://www.xmlsoft.org/sources/libxml2-${PV}.tar.gz;name=libtar \
file://fix-execution-of-ptests.patch \
file://fix-CVE-2017-8872.patch \
file://fix-CVE-2018-14404.patch \
+ file://0001-Fix-infinite-loop-in-LZMA-decompression.patch \
"
SRC_URI[libtar.md5sum] = "b786e353e2aa1b872d70d5d1ca0c740d"