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From: "amodra at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug demangler/114830] New: c++filt stack overflows in rust
 demangler
Date: Wed, 24 Apr 2024 00:36:38 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D114830

            Bug ID: 114830
           Summary: c++filt stack overflows in rust demangler
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: demangler
          Assignee: unassigned at gcc dot gnu.org
          Reporter: amodra at gmail dot com
  Target Milestone: ---

>From zhougeng@mail.zgclab.edu.cn and wangdw@mail.zgclab.edu.cn:

Hi, we found several crashes in c++filt(Binutils 2.42), which is the latest
version.

In detail, it contains 12 stack-buffer-overflow triggering methods.


To assist in diagnosing and resolving these issues, we have attached the POC
files along with the gdb/asan logs.


Environment:

Linux 4f6b99b5cf37 6.2.0-35-generic #35~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC =
Fri
Oct  6 10:23:26 UTC 2 x86_64 x86_64 x86_64 GNU/Linux


Credit by: Wang Dawei and Zhou Geng, from Zhongguancun Laboratory.


Thanks for your time and attention to these matters.


Best regards,

Zhou Geng=