David King
parent
3988e47658
commit
2084a27ee8
199
cairo-1.15.12-CVE-2020-35492.patch
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199
cairo-1.15.12-CVE-2020-35492.patch
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From 40e9d1a0a69f01b55b4fa131bc253c7c09a0ae91 Mon Sep 17 00:00:00 2001
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From: Heiko Lewin <heiko.lewin@worldiety.de>
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Date: Tue, 15 Dec 2020 16:48:19 +0100
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Subject: [PATCH 1/2] Fix mask usage in image-compositor
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---
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src/cairo-image-compositor.c | 8 ++--
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test/Makefile.sources | 1 +
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test/bug-image-compositor.c | 39 ++++++++++++++++++++
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test/reference/bug-image-compositor.ref.png | Bin 0 -> 185 bytes
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4 files changed, 44 insertions(+), 4 deletions(-)
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create mode 100644 test/bug-image-compositor.c
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create mode 100644 test/reference/bug-image-compositor.ref.png
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diff --git a/src/cairo-image-compositor.c b/src/cairo-image-compositor.c
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index 122a8ca42..b20e2ec78 100644
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--- a/src/cairo-image-compositor.c
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+++ b/src/cairo-image-compositor.c
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@@ -2601,14 +2601,14 @@ _inplace_src_spans (void *abstract_renderer, int y, int h,
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unsigned num_spans)
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{
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cairo_image_span_renderer_t *r = abstract_renderer;
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- uint8_t *m;
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+ uint8_t *m, *base = (uint8_t*)pixman_image_get_data(r->mask);
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int x0;
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if (num_spans == 0)
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return CAIRO_STATUS_SUCCESS;
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x0 = spans[0].x;
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- m = r->_buf;
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+ m = base;
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do {
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int len = spans[1].x - spans[0].x;
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if (len >= r->u.composite.run_length && spans[0].coverage == 0xff) {
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@@ -2646,7 +2646,7 @@ _inplace_src_spans (void *abstract_renderer, int y, int h,
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spans[0].x, y,
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spans[1].x - spans[0].x, h);
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- m = r->_buf;
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+ m = base;
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x0 = spans[1].x;
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} else if (spans[0].coverage == 0x0) {
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if (spans[0].x != x0) {
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@@ -2675,7 +2675,7 @@ _inplace_src_spans (void *abstract_renderer, int y, int h,
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#endif
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}
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- m = r->_buf;
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+ m = base;
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x0 = spans[1].x;
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} else {
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*m++ = spans[0].coverage;
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diff --git a/test/Makefile.sources b/test/Makefile.sources
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index c47131faf..86fd53d15 100644
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--- a/test/Makefile.sources
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+++ b/test/Makefile.sources
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@@ -33,6 +33,7 @@ test_sources = \
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bug-source-cu.c \
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bug-extents.c \
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bug-seams.c \
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+ bug-image-compositor.c \
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caps.c \
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checkerboard.c \
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caps-joins.c \
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diff --git a/test/bug-image-compositor.c b/test/bug-image-compositor.c
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new file mode 100644
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index 000000000..fc4fd370b
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--- /dev/null
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+++ b/test/bug-image-compositor.c
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@@ -0,0 +1,39 @@
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+#include "cairo-test.h"
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+
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+static cairo_test_status_t
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+draw (cairo_t *cr, int width, int height)
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+{
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+ cairo_set_source_rgb (cr, 0., 0., 0.);
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+ cairo_paint (cr);
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+
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+ cairo_set_source_rgb (cr, 1., 1., 1.);
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+ cairo_set_line_width (cr, 1.);
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+
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+ cairo_pattern_t *p = cairo_pattern_create_linear (0, 0, width, height);
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+ cairo_pattern_add_color_stop_rgb (p, 0, 0.99, 1, 1);
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+ cairo_pattern_add_color_stop_rgb (p, 1, 1, 1, 1);
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+ cairo_set_source (cr, p);
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+
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+ cairo_move_to (cr, 0.5, -1);
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+ for (int i = 0; i < width; i+=3) {
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+ cairo_rel_line_to (cr, 2, 2);
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+ cairo_rel_line_to (cr, 1, -2);
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+ }
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+
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+ cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
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+ cairo_stroke (cr);
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+
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+ cairo_pattern_destroy(p);
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+
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+ return CAIRO_TEST_SUCCESS;
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+}
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+
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+
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+CAIRO_TEST (bug_image_compositor,
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+ "Crash in image-compositor",
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+ "stroke, stress", /* keywords */
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+ NULL, /* requirements */
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+ 10000, 1,
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+ NULL, draw)
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+
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+
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diff --git a/test/reference/bug-image-compositor.ref.png b/test/reference/bug-image-compositor.ref.png
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new file mode 100644
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index 0000000000000000000000000000000000000000..939f659d2c8620e9927a3a79f5e96fb639c418be
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GIT binary patch
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literal 185
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zcmeAS@N?(olHy`uVBq!ia0y~yP!|BQ89A7M<o7+wF+hqf$=lt9;Xep2*t>i(P$bXO
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z#WAE}&f8-f1se=_SPWL_NSx=C)BnJ0eBr6Z%1egFEOv(*t#+|{>X&v^RS7GQe(vez
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lf)$wgmAfM(p2Sx&&i!{gWy)N&qd=P(JYD@<);T3K0RWsgHuC@g
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literal 0
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HcmV?d00001
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--
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2.34.1
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From afc23bfdc3c2597b9fe0ee34b9b4bfa47fa03698 Mon Sep 17 00:00:00 2001
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From: Heiko Lewin <heiko.lewin@worldiety.de>
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Date: Tue, 15 Dec 2020 17:14:18 +0100
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Subject: [PATCH 2/2] Minor cleanups
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---
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test/bug-image-compositor.c | 33 ++++++++++++++++++++++++++++++---
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1 file changed, 30 insertions(+), 3 deletions(-)
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diff --git a/test/bug-image-compositor.c b/test/bug-image-compositor.c
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index fc4fd370b..304ea089c 100644
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--- a/test/bug-image-compositor.c
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+++ b/test/bug-image-compositor.c
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@@ -1,5 +1,34 @@
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+/*
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+ * Copyright © 2020 Uli Schlachter, Heiko Lewin
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+ *
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+ * Permission is hereby granted, free of charge, to any person
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+ * obtaining a copy of this software and associated documentation
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+ * files (the "Software"), to deal in the Software without
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+ * restriction, including without limitation the rights to use, copy,
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+ * modify, merge, publish, distribute, sublicense, and/or sell copies
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+ * of the Software, and to permit persons to whom the Software is
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+ * furnished to do so, subject to the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be
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+ * included in all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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+ * SOFTWARE.
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+ *
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+ * Author: Uli Schlachter <psychon@znc.in>
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+ * Author: Heiko Lewin <hlewin@gmx.de>
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+ */
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#include "cairo-test.h"
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+
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+/* This test reproduces an overflow of a mask-buffer in cairo-image-compositor.c */
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+
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static cairo_test_status_t
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draw (cairo_t *cr, int width, int height)
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{
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@@ -13,6 +42,7 @@ draw (cairo_t *cr, int width, int height)
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cairo_pattern_add_color_stop_rgb (p, 0, 0.99, 1, 1);
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cairo_pattern_add_color_stop_rgb (p, 1, 1, 1, 1);
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cairo_set_source (cr, p);
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+ cairo_pattern_destroy(p);
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cairo_move_to (cr, 0.5, -1);
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for (int i = 0; i < width; i+=3) {
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@@ -23,8 +53,6 @@ draw (cairo_t *cr, int width, int height)
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cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
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cairo_stroke (cr);
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- cairo_pattern_destroy(p);
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-
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return CAIRO_TEST_SUCCESS;
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}
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@@ -36,4 +64,3 @@ CAIRO_TEST (bug_image_compositor,
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10000, 1,
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NULL, draw)
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-
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--
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2.34.1
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13
cairo.spec
13
cairo.spec
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Name: cairo
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Version: 1.17.4
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Release: 5%{?dist}
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Release: 6%{?dist}
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Summary: A 2D graphics library
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License: LGPLv2 or MPLv1.1
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@ -26,6 +26,11 @@ Patch4: 0001-Set-default-LCD-filter-to-FreeType-s-default.patch
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# Fix generating PDF font names
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# https://gitlab.freedesktop.org/cairo/cairo/-/merge_requests/125
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Patch5: 125.patch
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# https://bugzilla.redhat.com/show_bug.cgi?id=1911486
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Patch6: cairo-1.15.12-CVE-2020-35492.patch
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# For Patch6.
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BuildRequires: autoconf automake gettext-devel libtool
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BuildRequires: gcc
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BuildRequires: pkgconfig
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@ -97,9 +102,10 @@ This package contains tools for working with the cairo graphics library.
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* cairo-trace: Record cairo library calls for later playback
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%prep
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%autosetup -p1
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%autosetup -S git
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%build
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autoreconf --force --install
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%configure --disable-static \
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--enable-xlib \
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--enable-ft \
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@ -177,6 +183,9 @@ find $RPM_BUILD_ROOT -name '*.la' -delete
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%{_libdir}/cairo/
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%changelog
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* Mon Feb 21 2022 David King <amigadave@amigadave.com> - 1.17.4-6
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- Fix CVE-2020-35492 (#1911486)
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* Mon Aug 09 2021 Mohan Boddu <mboddu@redhat.com> - 1.17.4-5
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- Rebuilt for IMA sigs, glibc 2.34, aarch64 flags
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Related: rhbz#1991688
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