Commit 6887e412 authored by Michael Niedermayer's avatar Michael Niedermayer

avcodec/jpeg2000: Check sum of sizes of band->prec before allocating

Fixes: OOM
Fixes: 4810/clusterfuzz-testcase-minimized-6034253235093504

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpegSigned-off-by: 's avatarMichael Niedermayer <michael@niedermayer.cc>
parent a1f38c75
......@@ -541,6 +541,9 @@ int ff_jpeg2000_init_component(Jpeg2000Component *comp,
if (!reslevel->band)
return AVERROR(ENOMEM);
if (reslevel->num_precincts_x * (uint64_t)reslevel->num_precincts_y * reslevel->nbands > avctx->max_pixels / sizeof(*reslevel->band->prec))
return AVERROR(ENOMEM);
for (bandno = 0; bandno < reslevel->nbands; bandno++, gbandno++) {
ret = init_band(avctx, reslevel,
comp, codsty, qntsty,
......
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