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| author | Michael Niedermayer <michael@niedermayer.cc> | 2015-11-14 13:21:58 +0100 |
|---|---|---|
| committer | Carl Eugen Hoyos <cehoyos@ag.or.at> | 2015-12-06 14:15:11 +0100 |
| commit | 65f4425ad58072dcb5fbe6ce5d922de7f50a2c81 (patch) | |
| tree | 3ee73c429a1b8fa661f68f539be221d041768706 | |
| parent | d9593e075161b321afc639adeff9aca6f7d83da3 (diff) | |
| download | ffmpeg-65f4425ad58072dcb5fbe6ce5d922de7f50a2c81.tar.gz | |
avcodec/ffv1dec: Clear quant_table_count if its invalid
Fixes deallocation of corrupted pointer
Fixes: 343dfbe142a38b521ed069dc4ea7c03b/signal_sigsegv_421427_4074_ffb11959610278cd40dbc153464aa254.avi
No releases affected
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit e04126072e984f8db5db9da9303c89ae01f7d6bb)
Fixes ticket #5052.
| -rw-r--r-- | libavcodec/ffv1dec.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libavcodec/ffv1dec.c b/libavcodec/ffv1dec.c index a019f75549..ffba37f033 100644 --- a/libavcodec/ffv1dec.c +++ b/libavcodec/ffv1dec.c @@ -535,6 +535,7 @@ static int read_extra_header(FFV1Context *f) f->quant_table_count = get_symbol(c, state, 0); if (f->quant_table_count > (unsigned)MAX_QUANT_TABLES || !f->quant_table_count) { av_log(f->avctx, AV_LOG_ERROR, "quant table count %d is invalid\n", f->quant_table_count); + f->quant_table_count = 0; return AVERROR_INVALIDDATA; } |