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| author | Alex Converse <alex.converse@gmail.com> | 2012-03-06 17:00:29 -0800 |
|---|---|---|
| committer | Alex Converse <alex.converse@gmail.com> | 2012-03-07 15:40:42 -0800 |
| commit | fd0be63049ed46660993d0550a4f0847a0b942ea (patch) | |
| tree | cfa710b8589d56784f7979b1ec7dfb7832d4ab70 /libavcodec/tiff.c | |
| parent | 94f1b11a6fdfc43e48ffa4d29ba48f6ec3ba39d1 (diff) | |
tiffdec: Prevent illegal memory access caused by recycled pointers.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Diffstat (limited to 'libavcodec/tiff.c')
| -rw-r--r-- | libavcodec/tiff.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index 0ff6ceb7cc..9ca91636a1 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -535,6 +535,8 @@ static int decode_frame(AVCodecContext *avctx, av_log(avctx, AV_LOG_ERROR, "The answer to life, universe and everything is not correct!\n"); return -1; } + // Reset these pointers so we can tell if they were set this frame + s->stripsizes = s->stripdata = NULL; /* parse image file directory */ off = tget_long(&buf, le); if (off >= UINT_MAX - 14 || end_buf - orig_buf < off + 14) { |