[pcre-dev] [Bug 1786] New: Possible Stack Corruption from cr…

https://bugs.exim.org/show_bug.cgi?id=1786

            Bug ID: 1786
           Summary: Possible Stack Corruption from crafted pattern
           Product: PCRE
           Version: 10.21 (PCRE2)
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Severity: security
          Priority: medium
         Component: Code
          Assignee: ph10@???
          Reporter: cyoung@???
                CC: pcre-dev@???

Created attachment 863
--> https://bugs.exim.org/attachment.cgi?id=863&action=edit
afl-fuzz produced testcase

In the course of fuzz testing, I isolated a test input that crashes pcre2test
and leads to a corrupt stack.

The problem seems to be related to the UTF modifier.

Testcase was produced with afl-fuzz.

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