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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-05-31 12:49:50 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-06-01 23:32:28 +0200 |
| commit | 4b2248594c7faf1530c43e662c4b80655240b269 (patch) | |
| tree | 3367350103db262b55d11039c72a3eb4fb0df4d3 /libavcodec/jpeg2000dec.c | |
| parent | 01fd93e2aca48af5e615595dc92b8a3b467ea544 (diff) | |
avcodec/jpeg2000dec: clear pointer which become stale in get_ppt()
Fixes: use after free
Fixes: 22484/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-5671488765296640
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Gautam Ramakrishnan <gautamramk@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/jpeg2000dec.c')
| -rw-r--r-- | libavcodec/jpeg2000dec.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 65555424ed..b7766459c4 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -928,6 +928,7 @@ static int get_ppt(Jpeg2000DecoderContext *s, int n) tile->packed_headers = new; } else return AVERROR(ENOMEM); + memset(&tile->packed_headers_stream, 0, sizeof(tile->packed_headers_stream)); memcpy(tile->packed_headers + tile->packed_headers_size, s->g.buffer, n - 3); tile->packed_headers_size += n - 3; |