On Sun, 8 Apr 2018 03:29:44 +0200 Michael Niedermayer <mich...@niedermayer.cc> wrote:
> Limits based on 3GPP TS 26.245 V14.0.0 > Fixes: Timeout > Fixes: > 6377/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_MOVTEXT_fuzzer-5175929115508736 > > Found-by: continuous fuzzing process > https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- > libavcodec/movtextdec.c | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/libavcodec/movtextdec.c b/libavcodec/movtextdec.c > index 89ac791602..c38c5edce6 100644 > --- a/libavcodec/movtextdec.c > +++ b/libavcodec/movtextdec.c > @@ -299,6 +299,14 @@ static int decode_styl(const uint8_t *tsmb, > MovTextContext *m, AVPacket *avpkt) m->s_temp->style_start = > AV_RB16(tsmb); tsmb += 2; > m->s_temp->style_end = AV_RB16(tsmb); > + > + if ( m->s_temp->style_end < m->s_temp->style_start > + || (m->count_s && m->s_temp->style_start < > m->s[m->count_s - 1]->style_end)) { > + av_freep(&m->s_temp); > + mov_text_cleanup(m); > + return AVERROR(ENOMEM); > + } > + > tsmb += 2; > m->s_temp->style_fontID = AV_RB16(tsmb); > tsmb += 2; LGTM. --phil _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
