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Avoid out-of-bounds write overflow due to uint32 overflow computation on images with huge dimensions. Credit to Google Autofuzz project for providing test case

This commit is contained in:
Even Rouault 2018-02-11 13:31:04 +01:00
parent d96d2b9a25
commit da5e897232
1 changed files with 6 additions and 0 deletions
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6
src/lib/openjp2/tcd.c
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@ -1067,6 +1067,12 @@ static INLINE OPJ_BOOL opj_tcd_init_tile(opj_tcd_t *p_tcd, OPJ_UINT32 p_tile_no,
l_nb_code_blocks = l_current_precinct->cw * l_current_precinct->ch;
/*fprintf(stderr, "\t\t\t\t precinct_cw = %d x recinct_ch = %d\n",l_current_precinct->cw, l_current_precinct->ch); */
if ((((OPJ_UINT32) - 1) / (OPJ_UINT32)sizeof_block) <
l_nb_code_blocks) {
opj_event_msg(manager, EVT_ERROR,
"Size of code block data exceeds system limits\n");
return OPJ_FALSE;
}
l_nb_code_blocks_size = l_nb_code_blocks * (OPJ_UINT32)sizeof_block;
if (!l_current_precinct->cblks.blocks && (l_nb_code_blocks > 0U)) {