import CS pixman-0.38.4-4.el8

SOURCES/0001-Avoid-integer-overflow-leading-to-out-of-bounds-writ.patch

@@ -0,0 +1,29 @@
+From a1f88e842e0216a5b4df1ab023caebe33c101395 Mon Sep 17 00:00:00 2001
+From: Matt Turner <mattst88@gmail.com>
+Date: Wed, 2 Nov 2022 12:07:32 -0400
+Subject: [PATCH] Avoid integer overflow leading to out-of-bounds write
+
+Thanks to Maddie Stone and Google's Project Zero for discovering this
+issue, providing a proof-of-concept, and a great analysis.
+
+Closes: https://gitlab.freedesktop.org/pixman/pixman/-/issues/63
+---
+ pixman/pixman-trap.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/pixman/pixman-trap.c b/pixman/pixman-trap.c
+index 91766fd..7560405 100644
+--- a/pixman/pixman-trap.c
++++ b/pixman/pixman-trap.c
+@@ -74,7 +74,7 @@ pixman_sample_floor_y (pixman_fixed_t y,
+ 
+     if (f < Y_FRAC_FIRST (n))
+     {
+-	if (pixman_fixed_to_int (i) == 0x8000)
++	if (pixman_fixed_to_int (i) == 0xffff8000)
+ 	{
+ 	    f = 0; /* saturate */
+ 	}
+-- 
+2.41.0
+

SOURCES/0001-Fix-bilinear-filter-computation-in-wide-pipeline.patch

@@ -0,0 +1,84 @@
+From 8256c235d9b3854d039242356905eca854a890ba Mon Sep 17 00:00:00 2001
+From: Basile Clement <basile-pixman@clement.pm>
+Date: Tue, 9 Apr 2019 23:16:13 +0200
+Subject: [PATCH] Fix bilinear filter computation in wide pipeline
+
+The recently introduced wide pipeline for filters has a typo which
+causes it to improperly compute bilinear interpolation positions,
+causing various glitches when enabled.
+
+This patch uses the proper computation for bilinear interpolation in the
+wide pipeline.  It also makes related `if` statements conformant to the
+CODING_STYLE:
+
+* If a substatement spans multiple lines, then there must be braces
+  around it.
+
+* If one substatement of an if statement has braces, then the other
+  must too.
+
+Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
+---
+ pixman/pixman-bits-image.c | 9 +++++++++
+ pixman/pixman-inlines.h    | 2 +-
+ 2 files changed, 10 insertions(+), 1 deletion(-)
+
+diff --git a/pixman/pixman-bits-image.c b/pixman/pixman-bits-image.c
+index 564789e..7bc2ba8 100644
+--- a/pixman/pixman-bits-image.c
++++ b/pixman/pixman-bits-image.c
+@@ -432,29 +432,38 @@ bits_image_fetch_pixel_filtered (bits_image_t  *image,
+ 
+     case PIXMAN_FILTER_CONVOLUTION:
+ 	if (wide)
++	{
+ 	    bits_image_fetch_pixel_convolution (image, x, y,
+ 						get_pixel, out,
+ 						accum_float,
+ 						reduce_float);
++	}
+ 	else
++	{
+ 	    bits_image_fetch_pixel_convolution (image, x, y,
+ 						get_pixel, out,
+ 						accum_32, reduce_32);
++	}
+ 	break;
+ 
+     case PIXMAN_FILTER_SEPARABLE_CONVOLUTION:
+ 	if (wide)
++	{
+ 	    bits_image_fetch_pixel_separable_convolution (image, x, y,
+ 							  get_pixel, out,
+ 							  accum_float,
+ 							  reduce_float);
++	}
+ 	else
++	{
+ 	    bits_image_fetch_pixel_separable_convolution (image, x, y,
+ 							  get_pixel, out,
+ 							  accum_32, reduce_32);
++	}
+         break;
+ 
+     default:
++	assert (0);
+         break;
+     }
+ }
+diff --git a/pixman/pixman-inlines.h b/pixman/pixman-inlines.h
+index 332e208..f785910 100644
+--- a/pixman/pixman-inlines.h
++++ b/pixman/pixman-inlines.h
+@@ -231,7 +231,7 @@ bilinear_interpolation_float (argb_t tl, argb_t tr,
+     argb_t r;
+ 
+     distxy = distx * disty;
+-    distxiy = distx - (1.f - distxy);
++    distxiy = distx * (1.f - disty);
+     distixy = (1.f - distx) * disty;
+     distixiy = (1.f - distx) * (1.f - disty);
+ 
+-- 
+2.37.1
+

SPECS/pixman.spec

@@ -3,7 +3,7 @@
 
 Name:           pixman
 Version:        0.38.4
-Release:        2%{?dist}
+Release:        4%{?dist}
 Summary:        Pixel manipulation library
 
 Group:          System Environment/Libraries
@@ -17,6 +17,8 @@ Source0:        https://xorg.freedesktop.org/archive/individual/lib/%{name}-%{ve
 Source1:        make-pixman-snapshot.sh
 
 Patch0: 0001-Initialize-temporary-buffers-in-general_composite_re.patch
+Patch1: 0001-Fix-bilinear-filter-computation-in-wide-pipeline.patch
+Patch2: 0001-Avoid-integer-overflow-leading-to-out-of-bounds-writ.patch
 
 BuildRequires:  automake autoconf libtool
 BuildRequires:  gcc
@@ -68,6 +70,12 @@ make check %{?_smp_mflags} V=1
 %{_libdir}/pkgconfig/pixman-1.pc
 
 %changelog
+* Wed Oct 04 2023 José Expósito <jexposit@redhat.com> - 0.38.4-4
+- Backport fix for CVE-2022-44638
+
+* Sat Sep 03 2022 Benjamin Gilbert <bgilbert@backtick.net> - 0.38.4-3
+- Fix bilinear filter computation in wide pipeline
+
 * Tue Feb 22 2022 Adam Jackson <ajax@redhat.com> - 0.38.4-2
 - Backport the pixman part of cairo CVE-2020-35492