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authorochang <ochang@chromium.org>2016-05-20 09:54:24 -0700
committerCommit bot <commit-bot@chromium.org>2016-05-20 09:54:24 -0700
commit3cbb6fbcc7077d94161ec95b7bc1421671317c65 (patch)
treeed4082fde34f3f41ee31587552e202a129ff2c2f
parent788ac38e25fc6c000b36ec1722764673e192dea3 (diff)
downloadpdfium-chromium/2747.tar.xz
openjpeg: Prevent a buffer overflow in opj_j2k_read_SPCod_SPCoc.chromium/2747chromium/2746chromium/2745chromium/2744
BUG=chromium:613160 Review-Url: https://codereview.chromium.org/2001663002
-rw-r--r--third_party/libopenjpeg20/0015-read_SPCod_SPCoc_overflow.patch15
-rw-r--r--third_party/libopenjpeg20/README.pdfium1
-rw-r--r--third_party/libopenjpeg20/j2k.c4
3 files changed, 19 insertions, 1 deletions
diff --git a/third_party/libopenjpeg20/0015-read_SPCod_SPCoc_overflow.patch b/third_party/libopenjpeg20/0015-read_SPCod_SPCoc_overflow.patch
new file mode 100644
index 0000000000..56f0cf0e8e
--- /dev/null
+++ b/third_party/libopenjpeg20/0015-read_SPCod_SPCoc_overflow.patch
@@ -0,0 +1,15 @@
+diff --git a/third_party/libopenjpeg20/j2k.c b/third_party/libopenjpeg20/j2k.c
+index 9056feb..c7aa8db 100644
+--- a/third_party/libopenjpeg20/j2k.c
++++ b/third_party/libopenjpeg20/j2k.c
+@@ -8744,7 +8744,9 @@ static OPJ_BOOL opj_j2k_read_SPCod_SPCoc( opj_j2k_t *p_j2k,
+ p_j2k->m_specific_param.m_decoder.m_default_tcp;
+
+ /* precondition again */
+- assert(compno < p_j2k->m_private_image->numcomps);
++ if (compno >= p_j2k->m_private_image->numcomps) {
++ return OPJ_FALSE;
++ }
+
+ l_tccp = &l_tcp->tccps[compno];
+ l_current_ptr = p_header_data;
diff --git a/third_party/libopenjpeg20/README.pdfium b/third_party/libopenjpeg20/README.pdfium
index 82a3754482..559f1c1d11 100644
--- a/third_party/libopenjpeg20/README.pdfium
+++ b/third_party/libopenjpeg20/README.pdfium
@@ -24,4 +24,5 @@ Local Modifications:
0012-mct_sse.patch: Don't use SSE intrinsics in 32-bit builds.
0013-attrib_fix.patch: Don't needlessly redefine __attribute__, https://github.com/uclouvain/openjpeg/issues/727
0014-opj_jp2_read_ihdr_leak.patch: Memory leak in opj_jp2_read_ihdr().
+0015-read_SPCod_SPCoc_overflow.patch: Prevent a buffer overflow in opj_j2k_read_SPCod_SPCoc.
TODO(thestig): List all the other patches.
diff --git a/third_party/libopenjpeg20/j2k.c b/third_party/libopenjpeg20/j2k.c
index 9056feb29a..c7aa8db222 100644
--- a/third_party/libopenjpeg20/j2k.c
+++ b/third_party/libopenjpeg20/j2k.c
@@ -8744,7 +8744,9 @@ static OPJ_BOOL opj_j2k_read_SPCod_SPCoc( opj_j2k_t *p_j2k,
p_j2k->m_specific_param.m_decoder.m_default_tcp;
/* precondition again */
- assert(compno < p_j2k->m_private_image->numcomps);
+ if (compno >= p_j2k->m_private_image->numcomps) {
+ return OPJ_FALSE;
+ }
l_tccp = &l_tcp->tccps[compno];
l_current_ptr = p_header_data;