diff options
Diffstat (limited to 'meta/recipes-graphics/freetype/freetype/0001-sfnt-Fix-heap-buffer-overflow-59308.patch')
-rw-r--r-- | meta/recipes-graphics/freetype/freetype/0001-sfnt-Fix-heap-buffer-overflow-59308.patch | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/meta/recipes-graphics/freetype/freetype/0001-sfnt-Fix-heap-buffer-overflow-59308.patch b/meta/recipes-graphics/freetype/freetype/0001-sfnt-Fix-heap-buffer-overflow-59308.patch new file mode 100644 index 0000000000..fa8a29b798 --- /dev/null +++ b/meta/recipes-graphics/freetype/freetype/0001-sfnt-Fix-heap-buffer-overflow-59308.patch | |||
@@ -0,0 +1,51 @@ | |||
1 | From a3bab162b2ae616074c8877a04556932998aeacd Mon Sep 17 00:00:00 2001 | ||
2 | From: Werner Lemberg <wl@gnu.org> | ||
3 | Date: Mon, 19 Oct 2020 23:45:28 +0200 | ||
4 | Subject: [PATCH] [sfnt] Fix heap buffer overflow (#59308). | ||
5 | |||
6 | This is CVE-2020-15999. | ||
7 | |||
8 | * src/sfnt/pngshim.c (Load_SBit_Png): Test bitmap size earlier. | ||
9 | |||
10 | Upstream-Status: Backport [https://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=a3bab162b2ae616074c8877a04556932998aeacd] | ||
11 | |||
12 | Signed-off-by: Diego Santa Cruz <Diego.SantaCruz@spinetix.com> | ||
13 | --- | ||
14 | src/sfnt/pngshim.c | 14 +++++++------- | ||
15 | 1 file changed, 7 insertions(+), 7 deletions(-) | ||
16 | |||
17 | diff --git a/src/sfnt/pngshim.c b/src/sfnt/pngshim.c | ||
18 | index 2e64e5846..f55016122 100644 | ||
19 | --- a/src/sfnt/pngshim.c | ||
20 | +++ b/src/sfnt/pngshim.c | ||
21 | @@ -332,6 +332,13 @@ | ||
22 | |||
23 | if ( populate_map_and_metrics ) | ||
24 | { | ||
25 | + /* reject too large bitmaps similarly to the rasterizer */ | ||
26 | + if ( imgHeight > 0x7FFF || imgWidth > 0x7FFF ) | ||
27 | + { | ||
28 | + error = FT_THROW( Array_Too_Large ); | ||
29 | + goto DestroyExit; | ||
30 | + } | ||
31 | + | ||
32 | metrics->width = (FT_UShort)imgWidth; | ||
33 | metrics->height = (FT_UShort)imgHeight; | ||
34 | |||
35 | @@ -340,13 +347,6 @@ | ||
36 | map->pixel_mode = FT_PIXEL_MODE_BGRA; | ||
37 | map->pitch = (int)( map->width * 4 ); | ||
38 | map->num_grays = 256; | ||
39 | - | ||
40 | - /* reject too large bitmaps similarly to the rasterizer */ | ||
41 | - if ( map->rows > 0x7FFF || map->width > 0x7FFF ) | ||
42 | - { | ||
43 | - error = FT_THROW( Array_Too_Large ); | ||
44 | - goto DestroyExit; | ||
45 | - } | ||
46 | } | ||
47 | |||
48 | /* convert palette/gray image to rgb */ | ||
49 | -- | ||
50 | 2.18.4 | ||
51 | |||