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[Bug binutils/21636] New: SEGV on unknown address in ieee_object_p


From: aadamski at quarkslab dot com
Subject: [Bug binutils/21636] New: SEGV on unknown address in ieee_object_p
Date: Tue, 20 Jun 2017 19:54:24 +0000

https://sourceware.org/bugzilla/show_bug.cgi?id=21636

            Bug ID: 21636
           Summary: SEGV on unknown address in ieee_object_p
           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: ---

Similar issue to PR 21633.

--

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: 61a82c2111d891a45b5706e8fde3101f.143a3670a8d5914311f1a11b093f4058.min
Output: 61a82c2111d891a45b5706e8fde3101f.143a3670a8d5914311f1a11b093f4058.txt

Error in "ieee_object_p": SEGV on unknown address 0x000000000000 (pc
0x00000048a7bd bp 0x7fffffffe0b0 sp 0x7fffffffd820 T0)
  in ieee_object_p at bfd/ieee.c:1925
    (see
https://github.com/bminor/binutils-gdb/blob/a6cab9afd2c81465265c8d09569e3e6ef43d2954/bfd/ieee.c#L1925)
  in bfd_check_format_matches at bfd/format.c:311
    (see
https://github.com/bminor/binutils-gdb/blob/a6cab9afd2c81465265c8d09569e3e6ef43d2954/bfd/format.c#L311)
  in display_object_bfd at binutils/objdump.c:3608
    (see
https://github.com/bminor/binutils-gdb/blob/a6cab9afd2c81465265c8d09569e3e6ef43d2954/binutils/objdump.c#L3608)
  in display_any_bfd at binutils/objdump.c:3699
    (see
https://github.com/bminor/binutils-gdb/blob/a6cab9afd2c81465265c8d09569e3e6ef43d2954/binutils/objdump.c#L3699)
  in display_file at binutils/objdump.c:3720
    (see
https://github.com/bminor/binutils-gdb/blob/a6cab9afd2c81465265c8d09569e3e6ef43d2954/binutils/objdump.c#L3720)
  in main at binutils/objdump.c:4024
    (see
https://github.com/bminor/binutils-gdb/blob/a6cab9afd2c81465265c8d09569e3e6ef43d2954/binutils/objdump.c#L4024)

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