[Bug ld/24340] New: An Invalid Memory Address Dereference problem was discovered in function set_symbol_value in elflink.c in bfd

[wcventure at 126 dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=24340

            Bug ID: 24340
           Summary: An Invalid Memory Address Dereference problem was
                    discovered in function set_symbol_value in elflink.c
                    in bfd
           Product: binutils
           Version: 2.32
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: wcventure at 126 dot com
  Target Milestone: ---

Created attachment 11680
  --> https://sourceware.org/bugzilla/attachment.cgi?id=11680&action=edit
POC

Hi, there.

An Invalid Memory Address Dereference problem was discovered in function
set_symbol_value in elflink.c in bfd of binutils 2.32 the latest code base. A
crafted ELF input can cause segment faults and I have confirmed them with
address sanitizer too.

Please use the "./ld -E $POC" to reproduce the bug.


The ASAN dumps the stack trace as follows:

> =================================================================
> ==32343==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000018 (pc 
> 0x000000874318 bp 0x7ffd1cad2df0 sp 0x7ffd1cad2600 T0)
>     #0 0x874317 in set_symbol_value 
> /home/hjwang/Fuzzing_Objects/binutils_2.32_ASAN/bfd/elflink.c:8238:18
>     #1 0x874317 in elf_link_input_bfd 
> /home/hjwang/Fuzzing_Objects/binutils_2.32_ASAN/bfd/elflink.c:10795
>     #2 0x874317 in bfd_elf_final_link 
> /home/hjwang/Fuzzing_Objects/binutils_2.32_ASAN/bfd/elflink.c:12183
>     #3 0x59a4dc in ldwrite 
> /home/hjwang/Fuzzing_Objects/binutils_2.32_ASAN/ld/ldwrite.c:581:8
>     #4 0x58fe8c in main 
> /home/hjwang/Fuzzing_Objects/binutils_2.32_ASAN/ld/./ldmain.c:456:3
>     #5 0x7f2f38dc482f in __libc_start_main 
> /build/glibc-LK5gWL/glibc-2.23/csu/../csu/libc-start.c:291
>     #6 0x4195f8 in _start 
> (/home/hjwang/Fuzzing_Objects/binutils_2.32_ASAN/build/bin/ld+0x4195f8)
> 
> AddressSanitizer can not provide additional info.
> SUMMARY: AddressSanitizer: SEGV 
> /home/hjwang/Fuzzing_Objects/binutils_2.32_ASAN/bfd/elflink.c:8238:18 in 
> set_symbol_value
> ==32343==ABORTING
> Aborted

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