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| author | Sebastian Rasmussen <sebras@gmail.com> | 2017-12-11 14:09:15 +0100 |
|---|---|---|
| committer | Sebastian Rasmussen <sebras@gmail.com> | 2017-12-13 21:38:26 +0100 |
| commit | 55c3f68d638ac1263a386e0aaa004bb6e8bde731 (patch) | |
| tree | 27fd12c9cea4acc2718674b47cda3c029c490e11 /source/pdf/pdf-repair.c | |
| parent | c7a470081787cb85e6997dd611f24bfb280d55c2 (diff) | |
| download | mupdf-55c3f68d638ac1263a386e0aaa004bb6e8bde731.tar.xz | |
Bugs 698804/698810/698811: Keep PDF object numbers below limit.
This ensures that:
* xref tables with objects pointers do not grow out of bounds.
* other readers, e.g. Adobe Acrobat can parse PDFs written by mupdf.
Diffstat (limited to 'source/pdf/pdf-repair.c')
| -rw-r--r-- | source/pdf/pdf-repair.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/source/pdf/pdf-repair.c b/source/pdf/pdf-repair.c index ca149bd3..0c29758e 100644 --- a/source/pdf/pdf-repair.c +++ b/source/pdf/pdf-repair.c @@ -6,9 +6,6 @@ /* Scan file for objects and reconstruct xref table */ -/* Define in PDF 1.7 to be 8388607, but mupdf is more lenient. */ -#define MAX_OBJECT_NUMBER (10 << 20) - struct entry { int num; @@ -436,7 +433,7 @@ pdf_repair_xref(fz_context *ctx, pdf_document *doc) break; } - if (num <= 0 || num > MAX_OBJECT_NUMBER) + if (num <= 0 || num > PDF_MAX_OBJECT_NUMBER) { fz_warn(ctx, "ignoring object with invalid object number (%d %d R)", num, gen); goto have_next_token; |