[Bug ld/24041] New: Invalid Memory Address Dereference exists in the function elf_link_add_object_symbols in elflink.c in bfd

[wcventure at 126 dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=24041

            Bug ID: 24041
           Summary: Invalid Memory Address Dereference exists in the
                    function elf_link_add_object_symbols in elflink.c in
                    bfd
           Product: binutils
           Version: 2.31
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: wcventure at 126 dot com
  Target Milestone: ---

Created attachment 11496
  --> https://sourceware.org/bugzilla/attachment.cgi?id=11496&action=edit
POC

Hi, there.

An Invalid Memory Address Dereference problem was discovered in function
elf_link_add_object_symbols in elflink.c in bfd of binutils 2.31 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:

> ASAN:SIGSEGV
> =================================================================
> ==25025==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 
> 0x00000067b8c3 bp 0x7ffe8f394b60 sp 0x7ffe8f3943b0 T0)
>     #0 0x67b8c2 in elf_link_add_object_symbols 
> binutils-2.31_ASAN/bfd/elflink.c:4175
>     #1 0x688ac7 in bfd_elf_link_add_symbols 
> binutils-2.31_ASAN/bfd/elflink.c:5725
>     #2 0x438c64 in load_symbols binutils-2.31_ASAN/ld/ldlang.c:2880
>     #3 0x43c2d7 in open_input_bfds binutils-2.31_ASAN/ld/ldlang.c:3329
>     #4 0x459c70 in lang_process binutils-2.31_ASAN/ld/ldlang.c:7180
>     #5 0x469dbd in main ldmain.c:438
>     #6 0x7fb4d60a682f in __libc_start_main 
> (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
>     #7 0x4036d8 in _start (binutils-2.31_ASAN/build/bin/ld+0x4036d8)
> 
> AddressSanitizer can not provide additional info.
> SUMMARY: AddressSanitizer: SEGV binutils-2.31_ASAN/bfd/elflink.c:4175 
> elf_link_add_object_symbols
> ==25025==ABORTING

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