highperfocused/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

avcodec/ffv1dec: Fix integer overflow in read_quant_table()

Browse Source 
Fixes: runtime error: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int'
Fixes: 3361/clusterfuzz-testcase-minimized-5065842955911168

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit d00fc952b6c261dd8eb0f7552b9ccf985dbc2b20)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2017-09-18 17:26:09 +02:00
parent eb505747a7
commit 2ccc30217a
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/ffv1dec.c
View File

@ -480,7 +480,7 @@ static int read_quant_table(RangeCoder *c, int16_t *quant_table, int scale)
memset(state, 128, sizeof(state));
for (v = 0; i < 128; v++) {
unsigned len = get_symbol(c, state, 0) + 1;
unsigned len = get_symbol(c, state, 0) + 1U;
if (len > 128 - i)
return AVERROR_INVALIDDATA;