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https://gitlab.alpinelinux.org/alpine/aports.git
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24 lines
912 B
Diff
24 lines
912 B
Diff
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# HG changeset patch
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# User Bob Friesenhahn <bfriesen@GraphicsMagick.org>
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# Date 1505397055 18000
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# Node ID a0e598438aa970f237fa9b35edce0728cc144f29
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# Parent cadd4b0522fa8b6b6e8ea6a5a9b4a5baebc1b011
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MAT: Fix under-sized allocation leading to heap overflow.
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diff -r cadd4b0522fa -r a0e598438aa9 coders/mat.c
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--- a/coders/mat.c Wed Sep 13 10:28:42 2017 -0400
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+++ b/coders/mat.c Thu Sep 14 08:50:55 2017 -0500
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@@ -1050,9 +1050,10 @@
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}
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/* ----- Load raster data ----- */
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- BImgBuff = MagickAllocateMemory(unsigned char *,(size_t) (ldblk)); /* Ldblk was set in the check phase */
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+ BImgBuff = MagickAllocateArray(unsigned char *,(size_t) (ldblk),sizeof(double)); /* Ldblk was set in the check phase */
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if (BImgBuff == NULL)
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goto NoMemory;
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+ (void) memset(BImgBuff,0,ldblk*sizeof(double));
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if (CellType==miDOUBLE) /* Find Min and Max Values for floats */
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{
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