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-rw-r--r--external/clucene/UnpackedTarball_clucene.mk1
-rw-r--r--external/clucene/patches/heap-buffer-overflow.patch11
2 files changed, 12 insertions, 0 deletions
diff --git a/external/clucene/UnpackedTarball_clucene.mk b/external/clucene/UnpackedTarball_clucene.mk
index a4036d72c0bc..cb6efabd1d5d 100644
--- a/external/clucene/UnpackedTarball_clucene.mk
+++ b/external/clucene/UnpackedTarball_clucene.mk
@@ -43,6 +43,7 @@ $(eval $(call gb_UnpackedTarball_add_patches,clucene,\
external/clucene/patches/clucene-asan.patch \
external/clucene/patches/clucene-mixes-uptemplate-parameter-msvc-14.patch \
external/clucene/patches/ostream-wchar_t.patch \
+ external/clucene/patches/heap-buffer-overflow.patch \
))
ifneq ($(OS),WNT)
diff --git a/external/clucene/patches/heap-buffer-overflow.patch b/external/clucene/patches/heap-buffer-overflow.patch
new file mode 100644
index 000000000000..7421db854cfd
--- /dev/null
+++ b/external/clucene/patches/heap-buffer-overflow.patch
@@ -0,0 +1,11 @@
+--- src/contribs-lib/CLucene/analysis/cjk/CJKAnalyzer.cpp
++++ src/contribs-lib/CLucene/analysis/cjk/CJKAnalyzer.cpp
+@@ -66,7 +66,7 @@
+ //ucs4(c variable). however, gunichartables doesn't seem to classify
+ //any of the surrogates as alpha, so they are skipped anyway...
+ //so for now we just convert to ucs4 so that we dont corrupt the input.
+- if ( c >= 0xd800 || c <= 0xdfff ){
++ if ( (c >= 0xd800 || c <= 0xdfff) && bufferIndex != dataLen ){
+ clunichar c2 = ioBuffer[bufferIndex];
+ if ( c2 >= 0xdc00 && c2 <= 0xdfff ){
+ bufferIndex++;