virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-01-13 21:28:01 +02:00
Code Issues Releases Activity

Fix invalid reads in VC1 decoder

Browse Source 
Patch discussed and taken from https://roundup.ffmpeg.org/issue2584
(cherry picked from commit 2bbec1eda4)
This commit is contained in:
Reimar Döffinger 2011-02-19 11:33:01 +01:00 committed by Michael Niedermayer
parent 0cfcbf217f
commit c614d32e22
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/vc1dec.c
View File

@ -1376,7 +1376,7 @@ static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value,
if (index != vc1_ac_sizes[codingset] - 1) { if (index != vc1_ac_sizes[codingset] - 1) {
run = vc1_index_decode_table[codingset][index][0]; run = vc1_index_decode_table[codingset][index][0];
level = vc1_index_decode_table[codingset][index][1]; level = vc1_index_decode_table[codingset][index][1];
lst = index >= vc1_last_decode_table[codingset]; lst = index >= vc1_last_decode_table[codingset] || get_bits_left(gb) < 0;
if(get_bits1(gb)) if(get_bits1(gb))
level = -level; level = -level;
} else { } else {