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| author | Ryan Harrison <rharrison@chromium.org> | 2017-08-31 11:57:14 -0400 |
|---|---|---|
| committer | Chromium commit bot <commit-bot@chromium.org> | 2017-08-31 17:06:29 +0000 |
| commit | bc0ca1ec9b157ab8773c9043725c7422f7c1a57c (patch) | |
| tree | c1e46db02a10e3377d597265dcf125b980c277b0 /core/fxcodec/jbig2/JBig2_SddProc.cpp | |
| parent | df064df7a08e008b3c8e4d56bb0b75da9f014147 (diff) | |
| download | pdfium-bc0ca1ec9b157ab8773c9043725c7422f7c1a57c.tar.xz | |
Prevent duplicate parses of same data, in the same recursive descent
When parsing if there is a loop in the data being parsed, the
recursions will just keep cycling until it exhausts memory and
crashes. This CL introduces a parsed set, which a reference to is
passed down the descent. If the data being parsed at a specific stage
of the descent is already in the parsed set, then the parse returns at
that point.
BUG=chromium:759224
Change-Id: I1dca73d81020099dec03fd49aaa44cdcdf38e17e
Reviewed-on: https://pdfium-review.googlesource.com/12470
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Diffstat (limited to 'core/fxcodec/jbig2/JBig2_SddProc.cpp')
0 files changed, 0 insertions, 0 deletions