[Bug binutils/21648] New: SEGV on unknown address in display_debug_frames

[aadamski at quarkslab dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=21648

            Bug ID: 21648
           Summary: SEGV on unknown address in display_debug_frames
           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: 2f3028374138e0990bb8725e14c19138.93474bf24dbdf59dd66beb8d6d58fd36.min
Output: 2f3028374138e0990bb8725e14c19138.93474bf24dbdf59dd66beb8d6d58fd36.txt

Error in "display_debug_frames": SEGV on unknown address 0x6350000004c0 (pc
0x000000535d71 bp 0x7fffffffdf90 sp 0x7fffffffdc60 T0)
  in display_debug_frames at binutils/dwarf.c:7494
    (see
https://github.com/bminor/binutils-gdb/blob/a6cab9afd2c81465265c8d09569e3e6ef43d2954/binutils/dwarf.c#L7494)
  in dump_dwarf_section at binutils/objdump.c:2631
    (see
https://github.com/bminor/binutils-gdb/blob/a6cab9afd2c81465265c8d09569e3e6ef43d2954/binutils/objdump.c#L2631)
  in bfd_map_over_sections at bfd/section.c:1395
    (see
https://github.com/bminor/binutils-gdb/blob/a6cab9afd2c81465265c8d09569e3e6ef43d2954/bfd/section.c#L1395)
  in dump_dwarf at binutils/objdump.c:2697
    (see
https://github.com/bminor/binutils-gdb/blob/a6cab9afd2c81465265c8d09569e3e6ef43d2954/binutils/objdump.c#L2697)
  in dump_bfd at binutils/objdump.c:3576
    (see
https://github.com/bminor/binutils-gdb/blob/a6cab9afd2c81465265c8d09569e3e6ef43d2954/binutils/objdump.c#L3576)
  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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