40 lines
1.3 KiB
Diff
40 lines
1.3 KiB
Diff
Copied from Debian
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Index: tiff/tools/gif2tiff.c
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===================================================================
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--- tiff.orig/tools/gif2tiff.c
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+++ tiff/tools/gif2tiff.c
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@@ -280,6 +280,10 @@ readgifimage(char* mode)
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fprintf(stderr, "no colormap present for image\n");
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return (0);
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}
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+ if (width == 0 || height == 0) {
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+ fprintf(stderr, "Invalid value of width or height\n");
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+ return(0);
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+ }
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if ((raster = (unsigned char*) _TIFFmalloc(width*height+EXTRAFUDGE)) == NULL) {
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fprintf(stderr, "not enough memory for image\n");
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return (0);
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@@ -404,6 +408,10 @@ process(register int code, unsigned char
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fprintf(stderr, "bad input: code=%d is larger than clear=%d\n",code, clear);
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return 0;
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}
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+ if (*fill >= raster + width*height) {
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+ fprintf(stderr, "raster full before eoi code\n");
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+ return 0;
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+ }
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*(*fill)++ = suffix[code];
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firstchar = oldcode = code;
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return 1;
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@@ -434,6 +442,10 @@ process(register int code, unsigned char
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}
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oldcode = incode;
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do {
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+ if (*fill >= raster + width*height) {
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+ fprintf(stderr, "raster full before eoi code\n");
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+ return 0;
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+ }
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*(*fill)++ = *--stackp;
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} while (stackp > stack);
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return 1;
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