https://sourceware.org/bugzilla/show_bug.cgi?id=22398
Bug ID: 22398
Summary: setup_group NULL SEGV in objdump
Product: binutils
Version: 2.29
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: jgj212 at gmail dot com
Target Milestone: ---
Created attachment 10573
--> https://sourceware.org/bugzilla/attachment.cgi?id=10573&action=edit
poc-segv-setup_group
I found a NULL segv in objdum 2.29. Here is the asan report:
=================================================================
==988==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000008 (pc
0x0000006d9027 bp 0x7fff55af8850 sp 0x7fff55af8370 T0)
==988==The signal is caused by a READ memory access.
==988==Hint: address points to the zero page.
#0 0x6d9026 in setup_group bfd/elf.c:756:19
#1 0x6d4a74 in _bfd_elf_make_section_from_shdr bfd/elf.c:1020:10
#2 0x6ea227 in bfd_section_from_shdr bfd/elf.c:2436:12
#3 0x6d826a in setup_group bfd/elf.c:643:24
#4 0x6d4a74 in _bfd_elf_make_section_from_shdr bfd/elf.c:1020:10
#5 0x6e4f8d in bfd_section_from_shdr bfd/elf.c:2028:13
#6 0x6c189d in bfd_elf64_object_p bfd/./elfcode.h:805:7
#7 0x64525c in bfd_check_format_matches bfd/format.c:311:14
#8 0x5178cf in display_object_bfd binutils/./objdump.c:3601:7
#9 0x5177d9 in display_any_bfd binutils/./objdump.c:3692:5
#10 0x51731a in display_file binutils/./objdump.c:3713:3
#11 0x516b74 in main binutils/./objdump.c:4015:6
#12 0x7f8e3d22ef44 in __libc_start_main
/build/eglibc-oGUzwX/eglibc-2.19/csu/libc-start.c:287
#13 0x41b7bb in _start ( binutils/objdump+0x41b7bb)
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