| Package | Affected versions | Patched versions |
|---|---|---|
| firefox | < 45.7.0< 51.0 | 45.7.051.0 |
| thunderbird | < 45.7.0 | 45.7.0 |
A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory. This vulnerability affects Thunderbird < 45.7, Firefox ESR < 45.7, and Firefox < 51.
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