ffmpeg | branch: release/5.1 | Michael Niedermayer <[email protected]> | Tue Jun 20 00:13:43 2023 +0200| [55a00e464c4c13a466f97a2d984c09f2cc538505] | committer: Michael Niedermayer
avcodec/huffyuvdec: avoid undefined behavior with get_vlc2() failure Fixes: left shift of negative value -1 Fixes: 59889/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HUFFYUV_fuzzer-5472742275940352 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> (cherry picked from commit 90647a9249aee8c0ef6c0bced3558ada9643f5b6) Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=55a00e464c4c13a466f97a2d984c09f2cc538505 --- libavcodec/huffyuvdec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavcodec/huffyuvdec.c b/libavcodec/huffyuvdec.c index 6862376c44..2785da60e7 100644 --- a/libavcodec/huffyuvdec.c +++ b/libavcodec/huffyuvdec.c @@ -716,7 +716,7 @@ static void decode_plane_bitstream(HYuvContext *s, int width, int plane) } } if( width&1 && get_bits_left(&s->gb)>0 ) { - int dst = get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2; + int dst = (unsigned)get_vlc2(&s->gb, s->vlc[plane].table, VLC_BITS, 3)<<2; s->temp16[0][width-1] = dst + get_bits(&s->gb, 2); } } _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
