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[Bug binutils/21641] New: SEGV on unknown address in setup_sections

From: aadamski at quarkslab dot com
Subject: [Bug binutils/21641] New: SEGV on unknown address in setup_sections
Date: Tue, 20 Jun 2017 20:21:50 +0000


            Bug ID: 21641
           Summary: SEGV on unknown address in setup_sections
           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 + ASAN/UBSAN.

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

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


Input: ad5b18e3ab2e99645d454bd218e7e425.4a145a99483654b79949d806705c075c.min
Output: ad5b18e3ab2e99645d454bd218e7e425.4a145a99483654b79949d806705c075c.txt

Error in "setup_sections": SEGV on unknown address 0x611002960648 (pc
0x7ffff6f72c3a bp 0x7fffffffdc90 sp 0x7fffffffd418 T0)
  in setup_sections at bfd/som.c:2125
  in som_object_p at bfd/som.c:2511
  in bfd_check_format_matches at bfd/format.c:311
  in display_object_bfd at binutils/objdump.c:3608
  in display_any_bfd at binutils/objdump.c:3699
  in display_file at binutils/objdump.c:3720
  in main at binutils/objdump.c:4024

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