ffmpeg | branch: release/1.2 | Michael Niedermayer <michae...@gmx.at> | Fri Oct 3 16:08:32 2014 +0200| [f56095c4d7e5a76be8b114bcf427ab0becf0c635] | committer: Michael Niedermayer
avcodec/tiff: more completely check bpp/bppcount Fixes pixel format selection Fixes out of array accesses Fixes: asan_heap-oob_1766029_6_asan_heap-oob_20aa045_332_cov_1823216757_m2-d1d366d7965db766c19a66c7a2ccbb6b.tif Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michae...@gmx.at> (cherry picked from commit e1c0cfaa419aa5d320540d5a1b3f8fd9b82ab7e5) Signed-off-by: Michael Niedermayer <michae...@gmx.at> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f56095c4d7e5a76be8b114bcf427ab0becf0c635 --- libavcodec/tiff.c | 13 ++++++++++--- 1 file changed, 10 insertions(+), 3 deletions(-) diff --git a/libavcodec/tiff.c b/libavcodec/tiff.c index b43fda8..1456dad 100644 --- a/libavcodec/tiff.c +++ b/libavcodec/tiff.c @@ -716,13 +716,13 @@ static int tiff_decode_tag(TiffContext *s) s->height = value; break; case TIFF_BPP: - s->bppcount = count; - if (count > 4) { + if (count > 4U) { av_log(s->avctx, AV_LOG_ERROR, "This format is not supported (bpp=%d, %d components)\n", - s->bpp, count); + value, count); return AVERROR_INVALIDDATA; } + s->bppcount = count; if (count == 1) s->bpp = value; else { @@ -743,6 +743,13 @@ static int tiff_decode_tag(TiffContext *s) s->bpp = -1; } } + if (s->bpp > 64U) { + av_log(s->avctx, AV_LOG_ERROR, + "This format is not supported (bpp=%d, %d components)\n", + s->bpp, count); + s->bpp = 0; + return AVERROR_INVALIDDATA; + } break; case TIFF_SAMPLES_PER_PIXEL: if (count != 1) { _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
