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harfbuzz.25193
harfbuzz-CVE-2022-33068.patch
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File harfbuzz-CVE-2022-33068.patch of Package harfbuzz.25193
From 62e803b36173fd096d7ad460dd1d1db9be542593 Mon Sep 17 00:00:00 2001 From: Behdad Esfahbod <behdad@behdad.org> Date: Wed, 1 Jun 2022 07:38:21 -0600 Subject: [PATCH] [sbix] Limit glyph extents Fixes https://github.com/harfbuzz/harfbuzz/issues/3557 --- src/hb-ot-color-sbix-table.hh | 6 ++++++ test/fuzzing/fonts/sbix-extents.ttf | Bin 0 -> 582 bytes 2 files changed, 6 insertions(+) create mode 100644 test/fuzzing/fonts/sbix-extents.ttf diff --git a/src/hb-ot-color-sbix-table.hh b/src/hb-ot-color-sbix-table.hh index 9741ebd45..6efae43cd 100644 --- a/src/hb-ot-color-sbix-table.hh +++ b/src/hb-ot-color-sbix-table.hh @@ -298,6 +298,12 @@ struct sbix const PNGHeader &png = *blob->as<PNGHeader>(); + if (png.IHDR.height >= 65536 | png.IHDR.width >= 65536) + { + hb_blob_destroy (blob); + return false; + } + extents->x_bearing = x_offset; extents->y_bearing = png.IHDR.height + y_offset; extents->width = png.IHDR.width;
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