[Bug gas/27071] New: Multiple bugs in GNU assembler

[sirus.shahini at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=27071

            Bug ID: 27071
           Summary: Multiple bugs in GNU assembler
           Product: binutils
           Version: 2.35.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gas
          Assignee: unassigned at sourceware dot org
          Reporter: sirus.shahini at gmail dot com
  Target Milestone: ---

Created attachment 13051
  --> https://sourceware.org/bugzilla/attachment.cgi?id=13051&action=edit
Compressed archive of three crashing inputs

Hello,

During development and evaluation of our fuzzer we found multiple bugs in GNU
assembler. I have attached 3 inputs that can crash the latest version of the
assembler because of these issues:

1- Integer overflow, heap overflow and heap corruption in 'gas/listing.c'.
2- Invalid pointer dereference in 'gas/symbols.c'.
3- Double free and heap corruption in 'gas/config/obj-elf.c'.

The first input (crash000_opt_a_SIGSEGV) needs '-a' argument to cause the
crash.

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