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cairo.21072
cairo-fix-infinite-loop-bsc1122321-CVE-2019-646...
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File cairo-fix-infinite-loop-bsc1122321-CVE-2019-6462.patch of Package cairo.21072
commit ab2c5ee21e5f3d3ee4b3f67cfcd5811a4f99c3a0 Author: Heiko Lewin <hlewin@gmx.de> Date: Sun Aug 1 11:16:03 2021 +0000 _arc_max_angle_for_tolerance_normalized: fix infinite loop diff --git a/src/cairo-arc.c b/src/cairo-arc.c index 390397bae..1c891d1a0 100644 --- a/src/cairo-arc.c +++ b/src/cairo-arc.c @@ -90,16 +90,18 @@ _arc_max_angle_for_tolerance_normalized (double tolerance) { M_PI / 11.0, 9.81410988043554039085e-09 }, }; int table_size = ARRAY_LENGTH (table); + const int max_segments = 1000; /* this value is chosen arbitrarily. this gives an error of about 1.74909e-20 */ for (i = 0; i < table_size; i++) if (table[i].error < tolerance) return table[i].angle; ++i; + do { angle = M_PI / i++; error = _arc_error_normalized (angle); - } while (error > tolerance); + } while (error > tolerance && i < max_segments); return angle; }
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