https://sourceware.org/bugzilla/show_bug.cgi?id=22956
Bug ID: 22956 Summary: Heap out of bounds read in pex64_get_unwind_info() Product: binutils Version: 2.30 Status: UNCONFIRMED Severity: normal Priority: P2 Component: binutils Assignee: unassigned at sourceware dot org Reporter: fumfi.255 at gmail dot com Target Milestone: --- Created attachment 10890 --> https://sourceware.org/bugzilla/attachment.cgi?id=10890&action=edit Crashing test case (objdump) After some fuzz testing I found a crashing test case. Version: 2.30 Command: objdump -x -D -S -s -G -g -e -t -T -r -R objdump_hoobr_pex64_get_unwind_info ASAN Context: ==20442==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x60e00000dff7 at pc 0x000000977e90 bp 0x7fffdace5b80 sp 0x7fffdace5b70 READ of size 1 at 0x60e00000dff7 thread T0 #0 0x977e8f in pex64_get_unwind_info XYZ/binutils-2.30.0/bfd/pei-x86_64.c:113 #1 0x977e8f in pex64_dump_xdata XYZ/binutils-2.30.0/bfd/pei-x86_64.c:348 #2 0x977e8f in pex64_bfd_print_pdata_section XYZ/binutils-2.30.0/bfd/pei-x86_64.c:720 #3 0x97887d in pex64_print_all_pdata_sections XYZ/binutils-2.30.0/bfd/pei-x86_64.c:745 #4 0x61c56b in bfd_map_over_sections XYZ/binutils-2.30.0/bfd/section.c:1397 #5 0x9787e9 in pex64_bfd_print_pdata XYZ/binutils-2.30.0/bfd/pei-x86_64.c:759 #6 0x99abcd in _bfd_pex64_print_private_bfd_data_common XYZ/binutils-2.30.0/bfd/pex64igen.c:2908 #7 0x963640 in pe_print_private_bfd_data XYZ/binutils-2.30.0/bfd/peicode.h:336 #8 0x42009c in dump_bfd_private_header objdump.c:2966 #9 0x42009c in dump_bfd objdump.c:3559 #10 0x421a77 in display_object_bfd objdump.c:3658 #11 0x421a77 in display_any_bfd objdump.c:3747 #12 0x40ea81 in display_file objdump.c:3768 #13 0x40ea81 in main objdump.c:4070 #14 0x7fd3b68ca82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f) #15 0x411ca8 in _start (/usr/local/bin/objdump+0x411ca8) 0x60e00000dff7 is located 0 bytes to the right of 151-byte region [0x60e00000df60,0x60e00000dff7) allocated by thread T0 here: #0 0x7fd3b6f10602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602) #1 0x601d1a in bfd_malloc XYZ/binutils-2.30.0/bfd/libbfd.c:193 #2 0x61200000bfb7 (<unknown module>) SUMMARY: AddressSanitizer: heap-buffer-overflow XYZ/binutils-2.30.0/bfd/pei-x86_64.c:113 pex64_get_unwind_info Shadow bytes around the buggy address: 0x0c1c7fff9ba0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c1c7fff9bb0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c1c7fff9bc0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c1c7fff9bd0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c1c7fff9be0: fa fa fa fa fa fa fa fa fa fa fa fa 00 00 00 00 =>0x0c1c7fff9bf0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00[07]fa 0x0c1c7fff9c00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c1c7fff9c10: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c1c7fff9c20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c1c7fff9c30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c1c7fff9c40: 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 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 ==20442==ABORTING -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils