package/libraw: fix CVE-2023-1729

A flaw was found in LibRaw. A heap-buffer-overflow in raw2image_ex()
caused by a maliciously crafted file may lead to an application crash.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit bc4110b0739f07436cb8c0ff837b7284835fb9b8)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libraw/0001-do-not-set-shrink-flag-for-3-4-component-images.patch

@@ -0,0 +1,24 @@
+From 477e0719ffc07190c89b4f3d12d51b1292e75828 Mon Sep 17 00:00:00 2001
+From: Alex Tutubalin <lexa@lexa.ru>
+Date: Sat, 14 Jan 2023 18:32:59 +0300
+Subject: [PATCH] do not set shrink flag for 3/4 component images
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Upstream: https://github.com/LibRaw/LibRaw/commit/477e0719ffc07190c89b4f3d12d51b1292e75828
+---
+ src/preprocessing/raw2image.cpp | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/src/preprocessing/raw2image.cpp b/src/preprocessing/raw2image.cpp
+index e65e2ad7..702cf290 100644
+--- a/src/preprocessing/raw2image.cpp
++++ b/src/preprocessing/raw2image.cpp
+@@ -43,6 +43,8 @@ void LibRaw::raw2image_start()
+ 
+   // adjust for half mode!
+   IO.shrink =
++	  !imgdata.rawdata.color4_image && !imgdata.rawdata.color3_image &&
++	  !imgdata.rawdata.float4_image && !imgdata.rawdata.float3_image &&
+       P1.filters &&
+       (O.half_size || ((O.threshold || O.aber[0] != 1 || O.aber[2] != 1)));
+ 

package/libraw/libraw.mk

@@ -18,6 +18,9 @@ LIBRAW_DEPENDENCIES = host-pkgconf
 LIBRAW_CXXFLAGS = $(TARGET_CXXFLAGS)
 LIBRAW_CONF_ENV = CXXFLAGS="$(LIBRAW_CXXFLAGS)"
 
+# 0001-do-not-set-shrink-flag-for-3-4-component-images.patch
+LIBRAW_IGNORE_CVES += 0001-do-not-set-shrink-flag-for-3-4-component-images.patch
+
 ifeq ($(BR2_PACKAGE_JASPER),y)
 LIBRAW_CONF_OPTS += --enable-jasper
 LIBRAW_DEPENDENCIES += jasper