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[trunk] check possible overflow on size in opj_t2_read_packet_data 

Update issue 390
Labels: Priority-Critical
Should be rechecked with ASan and pdfium
This commit is contained in:
Antonin Descampe 2014-09-30 10:07:09 +00:00
parent 1acfa211ae
commit 45f33cdbd6
1 changed files with 6 additions and 0 deletions
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6
src/lib/openjp2/t2.c
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@ -1157,6 +1157,12 @@ OPJ_BOOL opj_t2_read_packet_data( opj_t2_t* p_t2,
};
#endif /* USE_JPWL */
/* Check possible overflow on size */
if ((l_cblk->data_current_size + l_seg->newlen) < l_cblk->data_current_size) {
fprintf(stderr, "read: segment too long (%d) with current size (%d > %d) for codeblock %d (p=%d, b=%d, r=%d, c=%d)\n",
l_seg->newlen, l_cblk->data_current_size, 0xFFFFFFFF - l_seg->newlen, cblkno, p_pi->precno, bandno, p_pi->resno, p_pi->compno);
return OPJ_FALSE;
}
/* Check if the cblk->data have allocated enough memory */
if ((l_cblk->data_current_size + l_seg->newlen) > l_cblk->data_max_size) {
OPJ_BYTE* new_cblk_data = (OPJ_BYTE*) opj_realloc(l_cblk->data, l_cblk->data_current_size + l_seg->newlen);