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Encoder: grow buffer size in opj_tcd_code_block_enc_allocate_data() to avoid write heap buffer overflow in opj_mqc_flush (#982)

This commit is contained in:
Even Rouault 2017-08-14 17:20:37 +02:00
parent 0b4c3ce75d
commit afb308b9cc
2 changed files with 7 additions and 2 deletions
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7
src/lib/openjp2/tcd.c
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@ -1187,8 +1187,11 @@ static OPJ_BOOL opj_tcd_code_block_enc_allocate_data(opj_tcd_cblk_enc_t *
{
OPJ_UINT32 l_data_size;
/* The +1 is needed for https://github.com/uclouvain/openjpeg/issues/835 */
l_data_size = 1 + (OPJ_UINT32)((p_code_block->x1 - p_code_block->x0) *
/* +1 is needed for https://github.com/uclouvain/openjpeg/issues/835 */
/* and actually +2 required for https://github.com/uclouvain/openjpeg/issues/982 */
/* TODO: is there a theoretical upper-bound for the compressed code */
/* block size ? */
l_data_size = 2 + (OPJ_UINT32)((p_code_block->x1 - p_code_block->x0) *
(p_code_block->y1 - p_code_block->y0) * (OPJ_INT32)sizeof(OPJ_UINT32));
if (l_data_size > p_code_block->data_size) {

2
tests/nonregression/test_suite.ctest.in
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@ -169,6 +169,8 @@ opj_compress -i @INPUT_NR_PATH@/Bretagne2.ppm -o @TEMP_PATH@/Bretagne2_empty_ban
# Same rate as Bretagne2_4.j2k
opj_compress -i @INPUT_NR_PATH@/Bretagne2.ppm -o @TEMP_PATH@/Bretagne2_empty_band_r800.j2k -t 2591,1943 -n 2 -r 800
opj_compress -i @INPUT_NR_PATH@/issue982.bmp -o @TEMP_PATH@/issue982.j2k -n 1
# DECODER TEST SUITE
opj_decompress -i @INPUT_NR_PATH@/Bretagne2.j2k -o @TEMP_PATH@/Bretagne2.j2k.pgx
opj_decompress -i @INPUT_NR_PATH@/_00042.j2k -o @TEMP_PATH@/_00042.j2k.pgx