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

avformat/flvdec: Check for nesting depth in amf_parse_object()

Browse Source 
Fixes: out of array access
Fixes: 29202/clusterfuzz-testcase-minimized-ffmpeg_dem_KUX_fuzzer-5112845840809984

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 074e204b42)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2021-01-23 21:20:57 +01:00
parent e4bae4cb70
commit 01cd33e59f
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
libavformat/flvdec.c
View File

@ -39,6 +39,8 @@
#define VALIDATE_INDEX_TS_THRESH 2500
#define MAX_DEPTH 16 ///< arbitrary limit to prevent unbounded recursion
typedef struct FLVContext {
const AVClass *class; ///< Class for private options.
int trust_metadata; ///< configure streams according onMetaData
@ -393,6 +395,9 @@ static int amf_parse_object(AVFormatContext *s, AVStream *astream,
char str_val[1024];
double num_val;
if (depth > MAX_DEPTH)
return AVERROR_PATCHWELCOME;
num_val = 0;
ioc = s->pb;
if (avio_feof(ioc))