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| author | Dale Curtis <dalecurtis@chromium.org> | 2013-03-26 14:12:30 -0700 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-05-09 21:01:02 +0200 |
| commit | f8d5f3dff5d665234d50d5d91085eaf8644e5ff8 (patch) | |
| tree | e8046e4bbaaec314c47e4ba142038341a0a4fe80 | |
| parent | 298e03d1023daf4c7074e0d781b0cdd9d56d9f8f (diff) | |
| download | ffmpeg-f8d5f3dff5d665234d50d5d91085eaf8644e5ff8.tar.gz | |
Fix heap-buffer-overflow in matroska_parse_block
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit 81e85bc95cb1e4f8cc7b1ba71ec027c8791b55d1)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavformat/matroskadec.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/libavformat/matroskadec.c b/libavformat/matroskadec.c index 45c1638d85..f8cd81f2ba 100644 --- a/libavformat/matroskadec.c +++ b/libavformat/matroskadec.c @@ -1916,10 +1916,10 @@ static void matroska_clear_queue(MatroskaDemuxContext *matroska) } static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf, - int size, int type, + int* buf_size, int type, uint32_t **lace_buf, int *laces) { - int res = 0, n; + int res = 0, n, size = *buf_size; uint8_t *data = *buf; uint32_t *lace_size; @@ -2017,6 +2017,7 @@ static int matroska_parse_laces(MatroskaDemuxContext *matroska, uint8_t **buf, *buf = data; *lace_buf = lace_size; + *buf_size = size; return res; } @@ -2252,7 +2253,7 @@ static int matroska_parse_block(MatroskaDemuxContext *matroska, uint8_t *data, matroska->skip_to_keyframe = 0; } - res = matroska_parse_laces(matroska, &data, size, (flags & 0x06) >> 1, + res = matroska_parse_laces(matroska, &data, &size, (flags & 0x06) >> 1, &lace_size, &laces); if (res) |