ffmpeg | branch: release/6.0 | Michael Niedermayer <mich...@niedermayer.cc> | Wed Jan 11 18:59:16 2023 +0100| [8e478e0cb17158126571f40fb945ab807d6284ed] | committer: Michael Niedermayer
avcodec/utils: allocate a line more for VC1 and WMV3 Fixes: out of array read on 32bit Fixes: 54857/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VC1_fuzzer-5840588224462848 The chroma MC code reads over the currently allocated frame. Alternative fixes would be allocating a few bytes more at the end instead of a whole line extra or to adjust the threshold where the edge emu code is activated Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> (cherry picked from commit 01636a63d452c592ece35af6f72bb7affcad58f2) Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8e478e0cb17158126571f40fb945ab807d6284ed --- libavcodec/utils.c | 1 + 1 file changed, 1 insertion(+) diff --git a/libavcodec/utils.c b/libavcodec/utils.c index 3b58c8a2ed..701bebe337 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -323,6 +323,7 @@ void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, *width = FFALIGN(*width, w_align); *height = FFALIGN(*height, h_align); if (s->codec_id == AV_CODEC_ID_H264 || s->lowres || + s->codec_id == AV_CODEC_ID_VC1 || s->codec_id == AV_CODEC_ID_WMV3 || s->codec_id == AV_CODEC_ID_VP5 || s->codec_id == AV_CODEC_ID_VP6 || s->codec_id == AV_CODEC_ID_VP6F || s->codec_id == AV_CODEC_ID_VP6A ) { _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email ffmpeg-cvslog-requ...@ffmpeg.org with subject "unsubscribe".
