[FFmpeg-trac] #8227(undetermined:closed): A double-free bug in the source file libavfilter/lavfutils.c

[FFmpeg]

#8227: A double-free bug in the source file libavfilter/lavfutils.c
-------------------------------------+-------------------------------------
             Reporter:  wurongxin    |                    Owner:
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:  invalid
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by mkver):

 * status:  new => closed
 * resolution:   => invalid
 * component:  avfilter => undetermined


Comment:

 Using av_packet_unref() after av_packet_unref() is safe, because
 av_packet_free_side_data uses av_freep(), i.e. it not only frees the side-
 data, but also resets the pointer to said side data (and the counter for
 the number of side-data elements).

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Ticket URL: <https://trac.ffmpeg.org/ticket/8227#comment:1>
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