https://sourceware.org/bugzilla/show_bug.cgi?id=26147
Bug ID: 26147
Summary: nm-new: heap-use-after-free in bfd/elf.c:2604
bfd_section_from_shdr
Product: binutils
Version: 2.34
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: feidiyin at gmail dot com
Target Milestone: ---
Created attachment 12632
--> https://sourceware.org/bugzilla/attachment.cgi?id=12632&action=edit
The Poc
==3113==ERROR: AddressSanitizer: heap-use-after-free on address 0xf490a230 at
pc 0x081b2101 bp 0xff846998 sp 0xff846988
WRITE of size 4 at 0xf490a230 thread T0
#0 0x81b2100 in bfd_section_from_shdr
/home/yinqidi/experiment/binutils-2.34/bfd/elf.c:2604
#1 0x83b639f in bfd_elf32_object_p
/home/yinqidi/experiment/binutils-2.34/bfd/elfcode.h:815
#2 0x809fb97 in bfd_check_format_matches
/home/yinqidi/experiment/binutils-2.34/bfd/format.c:328
#3 0x805ae22 in display_file
/home/yinqidi/experiment/binutils-2.34/binutils/nm.c:1375
#4 0x804f335 in main
/home/yinqidi/experiment/binutils-2.34/binutils/nm.c:1860
#5 0xf78a3636 in __libc_start_main (/lib/i386-linux-gnu/libc.so.6+0x18636)
#6 0x8050efb
(/home/yinqidi/experiment/binutils-2.34/binutils/nm-new+0x8050efb)
0xf490a230 is located 304 bytes inside of 4064-byte region
[0xf490a100,0xf490b0e0)
freed by thread T0 here:
#0 0xf7adca84 in free (/usr/lib32/libasan.so.2+0x96a84)
#1 0x864f6ea in objalloc_free_block objalloc.c:248
previously allocated by thread T0 here:
#0 0xf7adcdee in malloc (/usr/lib32/libasan.so.2+0x96dee)
#1 0x864ea08 in _objalloc_alloc objalloc.c:159
SUMMARY: AddressSanitizer: heap-use-after-free
/home/yinqidi/experiment/binutils-2.34/bfd/elf.c:2604 bfd_section_from_shdr
Shadow bytes around the buggy address:
0x3e9213f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e921400: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e921410: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e921420: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x3e921430: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
=>0x3e921440: fd fd fd fd fd fd[fd]fd fd fd fd fd fd fd fd fd
0x3e921450: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x3e921460: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x3e921470: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x3e921480: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x3e921490: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
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
Heap right redzone: fb
Freed heap region: fd
Stack left redzone: f1
Stack mid redzone: f2
Stack right redzone: f3
Stack partial redzone: f4
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
==3113==ABORTING
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