[tbb-bugs] #30541 [Applications/Tor Browser]: webgl readPixels FP entropy

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#30541: webgl readPixels FP entropy
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 Reporter:  Thorin                               |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Very High                            |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  tbb-fingerprinting,                  |  Actual Points:
  TorBrowserTeam201905R, GeorgKoppen201905       |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by mcs):

 r=brade, r=mcs

 The patch from comment:5 looks correct and seems to work (we tested it on
 a macOS 10.13.6 system).
 I don't know if this change will break a lot of WebGL sites; my hope is
 not too many.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/30541#comment:11>
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