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-rw-r--r--third_party/lcms/0024-verify-size-before-reading.patch17
1 files changed, 17 insertions, 0 deletions
diff --git a/third_party/lcms/0024-verify-size-before-reading.patch b/third_party/lcms/0024-verify-size-before-reading.patch
new file mode 100644
index 0000000000..e72e310a1b
--- /dev/null
+++ b/third_party/lcms/0024-verify-size-before-reading.patch
@@ -0,0 +1,17 @@
+diff --git a/third_party/lcms/src/cmstypes.c b/third_party/lcms/src/cmstypes.c
+index 75f1fae32..4d96a1ed6 100644
+--- a/third_party/lcms/src/cmstypes.c
++++ b/third_party/lcms/src/cmstypes.c
+@@ -173,6 +173,12 @@ cmsBool ReadPositionTable(struct _cms_typehandler_struct* self,
+ {
+ cmsUInt32Number i;
+ cmsUInt32Number *ElementOffsets = NULL, *ElementSizes = NULL;
++ cmsUInt32Number currentPosition;
++
++ currentPosition = io->Tell(io);
++ // Verify there is enough space left to read two cmsUInt32Number items for Count items.
++ if (((io->ReportedSize - currentPosition) / (2 * sizeof(cmsUInt32Number))) < Count)
++ return FALSE;
+
+ // Let's take the offsets to each element
+ ElementOffsets = (cmsUInt32Number *) _cmsCalloc(io ->ContextID, Count, sizeof(cmsUInt32Number));