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Mozilla Foundation Security Advisory 2011-44

Title: Use after free reading OGG headers
Impact: Critical
Announced: September 27, 2011
Reporter: sczimmer
Products: Firefox, Thunderbird, SeaMonkey

Fixed in: Firefox 7.0
  Thunderbird 7.0
  SeaMonkey 2.4


sczimmer reported that Firefox crashed when loading a particular .ogg file. This was due to a use-after-free condition and could potentially be exploited to install malware.

This vulnerability does not affect Firefox 3.6 or earlier.