1 files changed, 44 insertions, 0 deletions
diff --git a/poky/meta/recipes-sato/webkit/webkitgtk/0001-webkitgtk-fix-CVE-2017-17821.patch b/poky/meta/recipes-sato/webkit/webkitgtk/0001-webkitgtk-fix-CVE-2017-17821.patch
new file mode 100644
index 000000000..a3f759927
--- /dev/null
+++ b/poky/meta/recipes-sato/webkit/webkitgtk/0001-webkitgtk-fix-CVE-2017-17821.patch
@@ -0,0 +1,44 @@
+Backport patch to fix CVE-2017-17821. Refer to
+https://security-tracker.debian.org/tracker/CVE-2017-17821.
+
+Upstream-Status: Backport [https://trac.webkit.org/changeset/232119/webkit]
+CVE: CVE-2017-17821
+
+Signed-off-by: Kai Kang <kai.kang@windriver.com>
+
+From 2a17b15297eb886b0bfb7d098ef607cfad6c3da0 Mon Sep 17 00:00:00 2001
+From: "mcatanzaro@igalia.com"
+ <mcatanzaro@igalia.com@268f45cc-cd09-0410-ab3c-d52691b4dbfc>
+Date: Wed, 23 May 2018 17:54:01 +0000
+Subject: [PATCH] Prohibit shrinking the FastBitVector
+ https://bugs.webkit.org/show_bug.cgi?id=181020
+
+Reviewed by Oliver Hunt.
+
+Prohibit shrinking the FastBitVector. It's not prepared for this and the current usage does
+not require it.
+
+* wtf/FastBitVector.cpp:
+(WTF::FastBitVectorWordOwner::resizeSlow):
+
+git-svn-id: http://svn.webkit.org/repository/webkit/trunk@232119 268f45cc-cd09-0410-ab3c-d52691b4dbfc
+---
+ Source/WTF/wtf/FastBitVector.cpp |  2 ++
+ 2 files changed, 15 insertions(+)
+
+diff --git a/Source/WTF/wtf/FastBitVector.cpp b/Source/WTF/wtf/FastBitVector.cpp
+index eed316975f4..8b019aaa3ed 100644
+--- a/Source/WTF/wtf/FastBitVector.cpp
++++ b/Source/WTF/wtf/FastBitVector.cpp
+@@ -42,6 +42,8 @@ void FastBitVectorWordOwner::setEqualsSlow(const FastBitVectorWordOwner& other)
+ void FastBitVectorWordOwner::resizeSlow(size_t numBits)
+ {
+     size_t newLength = fastBitVectorArrayLength(numBits);
++
++    RELEASE_ASSERT(newLength >= arrayLength());
+     
+     // Use fastCalloc instead of fastRealloc because we expect the common
+     // use case for this method to be initializing the size of the bitvector.
+-- 
+2.17.0
+