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Potential overflow when precision is larger than 32 #781

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boxerab opened this issue May 7, 2016 · 2 comments
Closed

Potential overflow when precision is larger than 32 #781

boxerab opened this issue May 7, 2016 · 2 comments
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bug Priority-Critical
Milestone
OPJ v2.1.3

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@boxerab
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boxerab commented May 7, 2016

The JPEG 2000 standard allows up to 38 bit precision.

There are many places in the code of the form

(1 << image->comps[3].prec)

which will overflow for large precision.
@malaterre malaterre added this to the OPJ v2.1.2 milestone Sep 20, 2016
@detonin detonin modified the milestones: OPJ v2.1.2, OPJ v2.1.3 Sep 29, 2016
@boxerab boxerab closed this as completed Dec 28, 2016
@boxerab
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boxerab commented Dec 29, 2016

Happy Holidays

@boxerab boxerab reopened this Dec 29, 2016
@rouault
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rouault commented Jul 30, 2017

Precision limited now to 31 bit per e03e947

@rouault rouault closed this as completed Jul 30, 2017
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@boxerab @malaterre @detonin @rouault @mayeut