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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2012-03-02 16:33:33 -0500 |
|---|---|---|
| committer | Reinhard Tartler <siretart@tauware.de> | 2012-04-01 18:33:27 +0200 |
| commit | c932844882f315928688c704fd9cdcb7eee37d17 (patch) | |
| tree | 1e22e8bbc584a3dc9c8e6901ecc5aa0c2b3471b9 | |
| parent | 433aaeb2f1cf679f254f5f1c7220b4100bc89c68 (diff) | |
| download | ffmpeg-c932844882f315928688c704fd9cdcb7eee37d17.tar.gz | |
wmaenc: require a large enough output buffer to prevent overwrites
The maximum theoretical frame size is around 17000 bytes. Although in
practice it will generally be much smaller, we require a larger buffer
just to be safe.
CC: libav-stable@libav.org
(cherry picked from commit dfc4fdedf8cfc56a505579b1f2c1c5efbce4b97e)
Signed-off-by: Reinhard Tartler <siretart@tauware.de>
| -rw-r--r-- | libavcodec/wmaenc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/wmaenc.c b/libavcodec/wmaenc.c index 3cdb4a0b9b..a002c32b5d 100644 --- a/libavcodec/wmaenc.c +++ b/libavcodec/wmaenc.c @@ -355,6 +355,11 @@ static int encode_superframe(AVCodecContext *avctx, } } + if (buf_size < 2 * MAX_CODED_SUPERFRAME_SIZE) { + av_log(avctx, AV_LOG_ERROR, "output buffer size is too small\n"); + return AVERROR(EINVAL); + } + #if 1 total_gain= 128; for(i=64; i; i>>=1){ |