oss-fuzz 42310: Fix validation of CFF CIDFont charstring length

ArtifexSoftware · Dec 16, 2021 · a78a6db · a78a6db
1 parent 1a3c64e
commit a78a6db
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/pdf/pdf_font1C.c b/pdf/pdf_font1C.c
@@ -437,7 +437,7 @@ pdfi_cff_cid_glyph_data(gs_font_base *pbfont, gs_glyph glyph, gs_glyph_data_t *p
     if (code >= 0) {
         pdfi_countup(glyphname);
         code = pdfi_dict_get_by_key(pdffont9->ctx, pdffont9->CharStrings, glyphname, (pdf_obj **) &charstring);
-        if (code >= 0 && charstring->length > 1) {
+        if (code >= 0 && charstring->length > gscidfont->cidata.FDBytes) {
             if (gscidfont->cidata.FDBytes == 0)
                 *pfidx = 0;
             else