Fixes: null pointer dereference
Fixes: 555/clusterfuzz-testcase-5986646595993600
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/targets/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
av_freep(&m->s[i]);
}
av_freep(&m->s);
+ m->count_s = 0;
+ m->style_entries = 0;
}
}
static int decode_styl(const uint8_t *tsmb, MovTextContext *m, AVPacket *avpkt)
{
int i;
- m->style_entries = AV_RB16(tsmb);
+ int style_entries = AV_RB16(tsmb);
tsmb += 2;
// A single style record is of length 12 bytes.
- if (m->tracksize + m->size_var + 2 + m->style_entries * 12 > avpkt->size)
+ if (m->tracksize + m->size_var + 2 + style_entries * 12 > avpkt->size)
return -1;
+ m->style_entries = style_entries;
+
m->box_flags |= STYL_BOX;
for(i = 0; i < m->style_entries; i++) {
m->s_temp = av_malloc(sizeof(*m->s_temp));