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| author | Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> | 2015-12-19 12:02:56 +0100 |
|---|---|---|
| committer | Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com> | 2015-12-20 13:39:41 +0100 |
| commit | 174ec7d744d3e45bdb74c4c568f7bc5f689d4304 (patch) | |
| tree | 576220b8e3b9a4f5b1fc18a651155ac1740a5a92 /libavformat/avisynth.c | |
| parent | 778c8de40f2c8d8bdbdf9a52306c59b6a425d401 (diff) | |
| download | ffmpeg-174ec7d744d3e45bdb74c4c568f7bc5f689d4304.tar.gz | |
nutdec: reject negative value_len in read_sm_data
If it is negative, it can cause the byte position to move backwards in
avio_skip, which in turn makes sm_size negative and thus size larger
than the size of the packet buffer, causing invalid writes in avio_read.
Also fix potential overflow of avio_tell(bc) + value_len.
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
(cherry picked from commit ce10f572c12b0d172c72d31d8c979afce602bf0c)
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Diffstat (limited to 'libavformat/avisynth.c')
0 files changed, 0 insertions, 0 deletions