virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-01-24 13:56:33 +02:00
Code Issues Releases Activity

avcodec/ffv1dec: Clear quant_table_count if its invalid

Browse Source 
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.
This commit is contained in:
Michael Niedermayer 2015-11-14 13:21:58 +01:00 committed by Carl Eugen Hoyos
parent 1c6243228c
commit ff3e717003
1 changed files with 1 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
libavcodec/ffv1dec.c
View File

@ -571,6 +571,7 @@ 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;
}