https://sourceware.org/bugzilla/show_bug.cgi?id=26809
Bug ID: 26809
Summary: nm-new : heap-buffer-overflow in bfd_getl_signed_64
Product: binutils
Version: 2.36 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: zodf0055980 at gmail dot com
Target Milestone: ---
Created attachment 12928
--> https://sourceware.org/bugzilla/attachment.cgi?id=12928&action=edit
file that reproduces this problem
OS : ubuntu 18.04.3
kernel : gnu/linux 5.4.0-52-generic
CPU :　Intel(R) Core(TM) i7-10700 CPU @ 2.90GHz
compiler : gcc version 7.5.0
Steps to Reproduce :
download the sample from attachment
~/binutils-ASAN/binutils/nm-new -D --synthetic ./sample
/home/yuan/binutils-ASAN/binutils/nm-new: ./sample(.rela.plt): relocation 0 has
invalid symbol index 6
/home/yuan/binutils-ASAN/binutils/nm-new: ./sample: unsupported relocation type
0xf8
=================================================================
==1587==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x604000000247
at pc 0x5635ebbcfbd8 bp 0x7ffeb201d870 sp 0x7ffeb201d860
READ of size 1 at 0x604000000247 thread T0
#0 0x5635ebbcfbd7 in bfd_getl_signed_64
/home/yuan/binutils-ASAN/bfd/libbfd.c:752
#1 0x5635ebc82b61 in bfd_elf64_swap_reloca_in
/home/yuan/binutils-ASAN/bfd/elfcode.h:432
#2 0x5635ebd3597a in _bfd_elf_slurp_secondary_reloc_section
/home/yuan/binutils-ASAN/bfd/elf.c:12635
#3 0x5635ebc8c95f in bfd_elf64_slurp_reloc_table
/home/yuan/binutils-ASAN/bfd/elfcode.h:1606
#4 0x5635ebd08299 in _bfd_elf_canonicalize_dynamic_reloc
/home/yuan/binutils-ASAN/bfd/elf.c:8654
#5 0x5635ebc72dbc in _bfd_x86_elf_get_synthetic_symtab
/home/yuan/binutils-ASAN/bfd/elfxx-x86.c:2111
#6 0x5635ebc2fa6b in elf_x86_64_get_synthetic_symtab
/home/yuan/binutils-ASAN/bfd/elf64-x86-64.c:4918
#7 0x5635ebb7b0e3 in display_rel_file
/home/yuan/binutils-ASAN/binutils/nm.c:1161
#8 0x5635ebb7db8b in display_file
/home/yuan/binutils-ASAN/binutils/nm.c:1381
#9 0x5635ebb72d73 in main /home/yuan/binutils-ASAN/binutils/nm.c:1865
#10 0x7f7846ed8b96 in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x21b96)
#11 0x5635ebb74ed9 in _start
(/home/yuan/binutils-ASAN/binutils/nm-new+0xaced9)
0x604000000247 is located 7 bytes to the right of 48-byte region
[0x604000000210,0x604000000240)
allocated by thread T0 here:
#0 0x7f784758ab40 in __interceptor_malloc
(/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x5635ebbcc9a7 in bfd_malloc /home/yuan/binutils-ASAN/bfd/libbfd.c:275
SUMMARY: AddressSanitizer: heap-buffer-overflow
/home/yuan/binutils-ASAN/bfd/libbfd.c:752 in bfd_getl_signed_64
Shadow bytes around the buggy address:
0x0c087fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c087fff8000: fa fa 00 00 00 00 01 fa fa fa fd fd fd fd fd fd
0x0c087fff8010: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd fd
0x0c087fff8020: fa fa fd fd fd fd fd fd fa fa fd fd fd fd fd fa
0x0c087fff8030: fa fa fd fd fd fd fd fa fa fa 00 00 00 00 00 00
=>0x0c087fff8040: fa fa 00 00 00 00 00 00[fa]fa fd fd fd fd fd fd
0x0c087fff8050: fa fa 00 00 00 00 00 03 fa fa 00 00 00 00 00 fa
0x0c087fff8060: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd fd
0x0c087fff8070: fa fa fd fd fd fd fd fa fa fa fa fa fa fa fa fa
0x0c087fff8080: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c087fff8090: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Partially addressable: 01 02 03 04 05 06 07
Heap left redzone: fa
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack after return: f5
Stack use after scope: f8
Global redzone: f9
Global init order: f6
Poisoned by user: f7
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
Left alloca redzone: ca
Right alloca redzone: cb
==1587==ABORTING
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