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authorTom Sepez <tsepez@chromium.org>2015-01-26 16:51:21 -0800
committerTom Sepez <tsepez@chromium.org>2015-01-26 16:51:21 -0800
commita03932372b0906a340a6e3860c87e45f9ec79042 (patch)
treebb92376fc72a8b30e76a09aec332141eeae58634 /.gitignore
parentfa370ac5cf6472f0ec0c9ecf62d1f9dd20ebfa42 (diff)
downloadpdfium-a03932372b0906a340a6e3860c87e45f9ec79042.tar.xz
Fix infinite recursion in CPDF_Parser::ParseIndirectObjectAt().
A suitably corrupted file can cause the parser(s) to repeatedly re-read sections of the file at increasing parser recursion depth until the stack is exhausted. There is supposed to be a check for this based upon the parser "level", but not all call paths pass or update the level as required. Much as I hate per-class statics, this introduces one to track the depth so that the check is enforced no matter how screwy the call path might be that leads the parser to re-enter itself. This is more palatable than trying to find all these paths and fix them. We know this is OK since there is only one thread in here modifying the static. BUG=451830 R=thestig@chromium.org Review URL: https://codereview.chromium.org/875263002
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