From RedHat: https://bugzilla.redhat.com/attachment.cgi?id=967280&action=diff --- jasper-1.900.1.orig/src/libjasper/jp2/jp2_dec.c 2014-12-11 14:06:44.000000000 +0100 +++ jasper-1.900.1/src/libjasper/jp2/jp2_dec.c 2014-12-11 14:06:26.000000000 +0100 @@ -386,6 +386,11 @@ jas_image_t *jp2_decode(jas_stream_t *in /* Determine the type of each component. */ if (dec->cdef) { for (i = 0; i < dec->numchans; ++i) { + /* Is the channel number reasonable? */ + if (dec->cdef->data.cdef.ents[i].channo >= dec->numchans) { + jas_eprintf("error: invalid channel number in CDEF box\n"); + goto error; + } jas_image_setcmpttype(dec->image, dec->chantocmptlut[dec->cdef->data.cdef.ents[i].channo], jp2_getct(jas_image_clrspc(dec->image),