third_party/libopenjpeg20/0009-opj_pi_next.patch - Issue 1590593002: Merge to XFA: openjpeg: Fix potential bad precno value in opj_pi_next* functions.

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Side by Side Diff: third_party/libopenjpeg20/0009-opj_pi_next.patch

Issue 1590593002: Merge to XFA: openjpeg: Fix potential bad precno value in opj_pi_next* functions. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@xfa

Patch Set: Created 4 years, 11 months ago

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	1 diff --git a/third_party/libopenjpeg20/pi.c b/third_party/libopenjpeg20/pi.c

	2 index 06f1e41..462e07c 100644

	3 --- a/third_party/libopenjpeg20/pi.c

	4 +++ b/third_party/libopenjpeg20/pi.c

	5 @@ -377,6 +377,9 @@ if (!pi->tp_on){

	6 prcj = opj_int_floordivpow2(opj_int_ceil div(pi->y, (OPJ_INT32)(comp->dy << levelno)), (OPJ_INT32)res->pdy)

	7 - opj_int_floordivpow2(try0, (O PJ_INT32)res->pdy);

	8 pi->precno = (OPJ_UINT32)(prci + prcj * (OPJ_INT32)res->pw);

	9 + if (pi->precno >= res->pw * res->ph) {

	10 + return OPJ_FALSE;

	11 + }

	12 for (pi->layno = pi->poc.layno0; pi->lay no < pi->poc.layno1; pi->layno++) {

	13 index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;

	14 if (!pi->include[index]) {

	15 @@ -458,6 +461,9 @@ static OPJ_BOOL opj_pi_next_pcrl(opj_pi_iterator_t * pi) {

	16 prcj = opj_int_floordivpow2(opj_int_ceil div(pi->y, (OPJ_INT32)(comp->dy << levelno)), (OPJ_INT32)res->pdy)

	17 - opj_int_floordivpow2(try0, (O PJ_INT32)res->pdy);

	18 pi->precno = (OPJ_UINT32)(prci + prcj * (OPJ_INT32)res->pw);

	19 + if (pi->precno >= res->pw * res->ph) {

	20 + return OPJ_FALSE;

	21 + }

	22 for (pi->layno = pi->poc.layno0; pi->lay no < pi->poc.layno1; pi->layno++) {

	23 index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;

	24 if (!pi->include[index]) {

	25 @@ -537,6 +543,9 @@ static OPJ_BOOL opj_pi_next_cprl(opj_pi_iterator_t * pi) {

	26 prcj = opj_int_floordivpow2(opj_int_ceil div(pi->y, (OPJ_INT32)(comp->dy << levelno)), (OPJ_INT32)res->pdy)

	27 - opj_int_floordivpow2(try0, (O PJ_INT32)res->pdy);

	28 pi->precno = (OPJ_UINT32)(prci + prcj * (OPJ_INT32)res->pw);

	29 + if (pi->precno >= res->pw * res->ph) {

	30 + return OPJ_FALSE;

	31 + }

	32 for (pi->layno = pi->poc.layno0; pi->lay no < pi->poc.layno1; pi->layno++) {

	33 index = pi->layno * pi->step_l + pi->resno * pi->step_r + pi->compno * pi->step_c + pi->precno * pi->step_p;

	34 if (!pi->include[index]) {

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