mirrors/librempeg
1
0
Fork 0
mirror of https://github.com/librempeg/librempeg synced 2024-11-23 11:39:47 +00:00
Code Issues Packages Projects Releases Wiki Activity

avcodec/pgssubdec: Check for duplicate display segments

Browse Source 
In such a duplication the previous gets overwritten and leaks

Fixes: memleak
Fixes: 12510/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_PGSSUB_fuzzer-5694439226343424

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-01-29 01:06:01 +01:00
parent b429c86d84
commit e35c3d887b
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
libavcodec/pgssubdec.c
View File

@ -676,6 +676,11 @@ static int decode(AVCodecContext *avctx, void *data, int *data_size,
*/
break;
case DISPLAY_SEGMENT:
if (*data_size) {
av_log(avctx, AV_LOG_ERROR, "Duplicate display segment\n");
ret = AVERROR_INVALIDDATA;
break;
}
ret = display_end_segment(avctx, data, buf, segment_length);
if (ret >= 0)
*data_size = ret;