[Bug binutils/28069] New: readelf crashed due to Assertion failed in dwarf.c:display_discr_list

[shaohua.li at inf dot ethz.ch]

https://sourceware.org/bugzilla/show_bug.cgi?id=28069

            Bug ID: 28069
           Summary: readelf crashed due to Assertion failed in
                    dwarf.c:display_discr_list
           Product: binutils
           Version: 2.38 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: shaohua.li at inf dot ethz.ch
  Target Milestone: ---

Created attachment 13550
  --> https://sourceware.org/bugzilla/attachment.cgi?id=13550&action=edit
poc

Hi there,

I crashed `readelf -w` with a fuzzer. The original error message was "readelf:
dwarf.c:2336: void display_discr_list(unsigned long, dwarf_vma, unsigned char
*, const unsigned char *, int): Assertion `uvalue > 0' failed."

- Compiler: clang12
- Platform: Ubuntu 18.04.5 LTS, x86_64
- Reproduce: run `readelf -w poc`

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