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-rw-r--r--third_party/libpng16/0003-check-errors-in-set-pcal.patch47
-rw-r--r--third_party/libpng16/README.pdfium1
-rw-r--r--third_party/libpng16/pngset.c22
3 files changed, 65 insertions, 5 deletions
diff --git a/third_party/libpng16/0003-check-errors-in-set-pcal.patch b/third_party/libpng16/0003-check-errors-in-set-pcal.patch
new file mode 100644
index 0000000000..58e27ba623
--- /dev/null
+++ b/third_party/libpng16/0003-check-errors-in-set-pcal.patch
@@ -0,0 +1,47 @@
+diff --git a/pngset.c b/pngset.c
+index cccd9cd..83d6ce2 100644
+--- a/pngset.c
++++ b/pngset.c
+@@ -283,17 +283,29 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforpinfo_ptr,
+
+ /* Check that the type matches the specification. */
+ if (type < 0 || type > 3)
+- png_error(png_ptr, "Invalid pCAL equation type");
++ {
++ png_chunk_report(png_ptr, "Invalid pCAL equation type",
++ PNG_CHUNK_WRITE_ERROR);
++ return;
++ }
+
+ if (nparams < 0 || nparams > 255)
+- png_error(png_ptr, "Invalid pCAL parameter count");
++ {
++ png_chunk_report(png_ptr, "Invalid pCAL parameter count",
++ PNG_CHUNK_WRITE_ERROR);
++ return;
++ }
+
+ /* Validate params[nparams] */
+ for (i=0; i<nparams; ++i)
+ {
+ if (params[i] == NULL ||
+ !png_check_fp_string(params[i], strlen(params[i])))
+- png_error(png_ptr, "Invalid format for pCAL parameter");
++ {
++ png_chunk_report(png_ptr, "Invalid format for pCAL parameter",
++ PNG_CHUNK_WRITE_ERROR);
++ return;
++ }
+ }
+
+ info_ptr->pcal_purpose = png_voidcast(png_charp,
+@@ -301,8 +313,8 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforpinfo_ptr,
+
+ if (info_ptr->pcal_purpose == NULL)
+ {
+- png_warning(png_ptr, "Insufficient memory for pCAL purpose");
+-
++ png_chunk_report(png_ptr, "Insufficient memory for pCAL purpose",
++ PNG_CHUNK_WRITE_ERROR);
+ return;
+ }
diff --git a/third_party/libpng16/README.pdfium b/third_party/libpng16/README.pdfium
index 733867b782..47af52f8b6 100644
--- a/third_party/libpng16/README.pdfium
+++ b/third_party/libpng16/README.pdfium
@@ -17,3 +17,4 @@ pnglibconf.h: a copy of libpng's scripts/pnglibconf.h.prebuilt.
pngprefix.h: manually-created redefinitions to avoid conflicts with Chromium.
0000-build-config.patch: Local build configuration changes.
0002-static-png-gt.patch: Unconditionally use static png_gt() in png.c to avoid compilation warning.
+0003-check-errors-in-set-pcal.patch: Backported github.com/glennrp/libpng/pull/135
diff --git a/third_party/libpng16/pngset.c b/third_party/libpng16/pngset.c
index 303328f87e..1c51270cc5 100644
--- a/third_party/libpng16/pngset.c
+++ b/third_party/libpng16/pngset.c
@@ -283,17 +283,29 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
/* Check that the type matches the specification. */
if (type < 0 || type > 3)
- png_error(png_ptr, "Invalid pCAL equation type");
+ {
+ png_chunk_report(png_ptr, "Invalid pCAL equation type",
+ PNG_CHUNK_WRITE_ERROR);
+ return;
+ }
if (nparams < 0 || nparams > 255)
- png_error(png_ptr, "Invalid pCAL parameter count");
+ {
+ png_chunk_report(png_ptr, "Invalid pCAL parameter count",
+ PNG_CHUNK_WRITE_ERROR);
+ return;
+ }
/* Validate params[nparams] */
for (i=0; i<nparams; ++i)
{
if (params[i] == NULL ||
!png_check_fp_string(params[i], strlen(params[i])))
- png_error(png_ptr, "Invalid format for pCAL parameter");
+ {
+ png_chunk_report(png_ptr, "Invalid format for pCAL parameter",
+ PNG_CHUNK_WRITE_ERROR);
+ return;
+ }
}
info_ptr->pcal_purpose = png_voidcast(png_charp,
@@ -301,8 +313,8 @@ png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->pcal_purpose == NULL)
{
- png_warning(png_ptr, "Insufficient memory for pCAL purpose");
-
+ png_chunk_report(png_ptr, "Insufficient memory for pCAL purpose",
+ PNG_CHUNK_WRITE_ERROR);
return;
}