icu: Integer overflow in UnicodeString::doAppend() (CVE-2020-10531)
An issue was discovered in International Components for Unicode (ICU) for C/C++ through 66.1. An integer overflow, leading to a heap-based buffer overflow, exists in the UnicodeString::doAppend() function in common/unistr.cpp.
- h ttps://unicode-org.atlassian.net/browse/ICU-20958
- 3.8-stable (248b3fa9)
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