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[Bug binutils/21591] New: SEGV on unknown address 0x000000000000 in vers

From: aadamski at quarkslab dot com
Subject: [Bug binutils/21591] New: SEGV on unknown address 0x000000000000 in versados_scan
Date: Tue, 13 Jun 2017 22:29:28 +0000


            Bug ID: 21591
           Summary: SEGV on unknown address 0x000000000000 in
           Product: binutils
           Version: 2.29 (HEAD)
            Status: UNCONFIRMED
          Severity: critical
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: aadamski at quarkslab dot com
  Target Milestone: ---

Hello there,

I have been fuzzing objdump with American Fuzzy Lop and AddressSanitizer.

Please find attached the minimized file causing the issue ("Input") and the
ASAN report log ("Output"). Below is the reduced stacktrace with links to the
corresponding source lines on a GitHub mirror.

The command used was `objdump -D <file>`. The compilation flags used were `-g
-O2 -fno-omit-frame-pointer -fsanitize=address
-fno-sanitize-recover=undefined`. The configuration settings used were
`--enable-targets=all --disable-shared`.

Let me know if there is any additional information I can provide.


Input: 2304d75a49df935290e0c4edef5779a1.52037608e08ea640c3ff19ec097f9e72.min
Output: 2304d75a49df935290e0c4edef5779a1.52037608e08ea640c3ff19ec097f9e72.txt

Error in "versados_scan": SEGV on unknown address 0x000000000000 (pc
0x00000173e11e bp 0x7fffffffe130 sp 0x7fffffffdda0 T0)
  in versados_scan at bfd/versados.c:538
  in versados_object_p at bfd/versados.c:645
  in bfd_check_format_matches at bfd/format.c:311
  in display_object_bfd at binutils/objdump.c:3602
  in display_any_bfd at binutils/objdump.c:3693
  in display_file at binutils/objdump.c:3714
  in main at binutils/objdump.c:4016

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