webkitgtk: fix CVE-2022-46691

A memory consumption issue was addressed with improved memory handling.
This issue is fixed in Safari 16.2, tvOS 16.2, macOS Ventura 13.1, iOS
15.7.2 and iPadOS 15.7.2, iOS 16.2 and iPadOS 16.2, watchOS 9.2. Processing
maliciously crafted web content may lead to arbitrary code execution.

References:
https://nvd.nist.gov/vuln/detail/CVE-2022-46691
https://support.apple.com/en-us/HT213531

(From OE-Core rev: 15603261034610b6606df99996d065c254d8f8f9)

Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-sato/webkit/webkitgtk/CVE-2022-46691.patch

@@ -0,0 +1,43 @@
+From fd57a49d07c9c285780495344073350182fd7c7c Mon Sep 17 00:00:00 2001
+From: Yijia Huang <hyjorc1@gmail.com>
+Date: Mon, 10 Oct 2022 15:42:34 -0700
+Subject: [PATCH] [JSC] Should model BigInt with side effects
+ https://bugs.webkit.org/show_bug.cgi?id=246291 rdar://100494823
+
+Reviewed by Yusuke Suzuki.
+
+Operations with two BigInt operands have side effects,
+which should not be hoisted from loops.
+
+* Source/JavaScriptCore/dfg/DFGClobberize.cpp:
+(JSC::DFG::doesWrites):
+* Source/JavaScriptCore/dfg/DFGClobberize.h:
+(JSC::DFG::clobberize):
+
+Canonical link: https://commits.webkit.org/255368@main
+
+CVE: CVE-2022-46691
+
+Upstream-Status: Backport
+[https://github.com/WebKit/WebKit/commit/fd57a49d07c9c285780495344073350182fd7c7c]
+
+Signed-off-by: Yogita Urade <yogita.urade@windriver.com>
+---
+ Source/JavaScriptCore/dfg/DFGClobberize.h | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/Source/JavaScriptCore/dfg/DFGClobberize.h b/Source/JavaScriptCore/dfg/DFGClobberize.h
+index 0363ab20dcd8..4b1bcfea1fd7 100644
+--- a/Source/JavaScriptCore/dfg/DFGClobberize.h
++++ b/Source/JavaScriptCore/dfg/DFGClobberize.h
+@@ -811,6 +811,8 @@ void clobberize(Graph& graph, Node* node, const ReadFunctor& read, const WriteFu
+     case ValueBitRShift:
+         // FIXME: this use of single-argument isBinaryUseKind would prevent us from specializing (for example) for a HeapBigInt left-operand and a BigInt32 right-operand.
+         if (node->isBinaryUseKind(AnyBigIntUse) || node->isBinaryUseKind(BigInt32Use) || node->isBinaryUseKind(HeapBigIntUse)) {
++            read(World);
++            write(SideState);
+             def(PureValue(node));
+             return;
+         }
+--
+2.40.0

meta/recipes-sato/webkit/webkitgtk_2.36.8.bb

@@ -17,6 +17,7 @@ SRC_URI = "https://www.webkitgtk.org/releases/${BP}.tar.xz \
            file://0001-When-building-introspection-files-do-not-quote-CFLAG.patch \
            file://CVE-2022-32888.patch \
            file://CVE-2022-32923.patch \
+           file://CVE-2022-46691.patch \
            "
 SRC_URI[sha256sum] = "0ad9fb6bf28308fe3889faf184bd179d13ac1b46835d2136edbab2c133d00437"