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Description: OOB write in gif2tiff
Bug-Redhat: https://bugzilla.redhat.com/show_bug.cgi?id=996468
Index: tiff-4.0.3/tools/gif2tiff.c
===================================================================
--- tiff-4.0.3.orig/tools/gif2tiff.c 2013-08-24 11:17:13.546447901 -0400
+++ tiff-4.0.3/tools/gif2tiff.c 2013-08-24 11:17:13.546447901 -0400
@@ -400,6 +400,10 @@
}
if (oldcode == -1) {
+ if (code >= clear) {
+ fprintf(stderr, "bad input: code=%d is larger than clear=%d\n",code, clear);
+ return 0;
+ }
*(*fill)++ = suffix[code];
firstchar = oldcode = code;
return 1;
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