https://sourceware.org/bugzilla/show_bug.cgi?id=20891
Bug ID: 20891 Summary: Segfault in addr2line Product: binutils Version: 2.28 (HEAD) Status: UNCONFIRMED Severity: normal Priority: P2 Component: binutils Assignee: unassigned at sourceware dot org Reporter: thuanpv at comp dot nus.edu.sg Target Milestone: --- Dear all, Using AFLFast (https://github.com/mboehme/aflfast), a fork of AFL, we found an input causing addr2line to crash. Valgrind says that it is an invalid write. The bug was found on Ubuntu 14.04 & binutils was checked out from https://github.com/bminor/binutils-gdb repository. Its commit is 268ebe95201d2ebdcf68cad9dc67ff6d1e25be9e (Fri Nov 18 14:15:12 2016) To reproduce: printf "\x0b\x01\x00\x30\x00\x00\x00\x00\x00\x00\x00\x00\x30\x30\x30\x30\x1c\x00\x00\x00\x30\x30\x30\x30\x00\x00\x00\x00\x00\x01\x00\x00\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\ x30\x30\x30\x30\x30\x30\x30\x00\x00\x00\x00\x64\x30\x30\x30\x30\x30\x30\x30\x00\x00\x00\x00\x64\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x1b\x01\x00\x00\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x 30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30\x30" > fd addr2line s -e fd ASAN says: ASAN:DEADLYSIGNAL ================================================================= ==47318==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f7e6ee49029 bp 0xffffffffffffffff sp 0x7ffe86e5a8b0 T0) #0 0x7f7e6ee49028 in __vsprintf_chk (/lib/x86_64-linux-gnu/libc.so.6+0x109028) #1 0x7f7e6ee48f7c in __sprintf_chk (/lib/x86_64-linux-gnu/libc.so.6+0x108f7c) #2 0x5515c9 in sprintf /usr/include/x86_64-linux-gnu/bits/stdio2.h:33 #3 0x5515c9 in aout_32_find_nearest_line ../../bfd/aoutx.h:2814 #4 0x40cb9d in find_address_in_section ../../binutils/addr2line.c:187 #5 0x42186f in bfd_map_over_sections ../../bfd/section.c:1395 #6 0x40b19a in translate_addresses ../../binutils/addr2line.c:265 #7 0x40b19a in process_file ../../binutils/addr2line.c:402 #8 0x40b19a in main ../../binutils/addr2line.c:509 #9 0x7f7e6ed61f44 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21f44) #10 0x40c806 (/home/ubuntu/subjects/binutils-asan/obj-asan/binutils/addr2line+0x40c806) AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV (/lib/x86_64-linux-gnu/libc.so.6+0x109028) in __vsprintf_chk ==47318==ABORTING Valgrind says: ==46463== Invalid write of size 1 ==46463== at 0x5144029: __vsprintf_chk (vsprintf_chk.c:86) ==46463== by 0x5143F7C: __sprintf_chk (sprintf_chk.c:31) ==46463== by 0x638930: sprintf (stdio2.h:33) ==46463== by 0x638930: aout_32_find_nearest_line (aoutx.h:2814) ==46463== by 0x40762C: find_address_in_section (addr2line.c:187) ==46463== by 0x43D55B: bfd_map_over_sections (section.c:1395) ==46463== by 0x405F12: translate_addresses (addr2line.c:265) ==46463== by 0x405F12: process_file (addr2line.c:402) ==46463== by 0x405F12: main (addr2line.c:509) ==46463== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==46463== ==46463== ==46463== Process terminating with default action of signal 11 (SIGSEGV) ==46463== Access not within mapped region at address 0x0 ==46463== at 0x5144029: __vsprintf_chk (vsprintf_chk.c:86) ==46463== by 0x5143F7C: __sprintf_chk (sprintf_chk.c:31) ==46463== by 0x638930: sprintf (stdio2.h:33) ==46463== by 0x638930: aout_32_find_nearest_line (aoutx.h:2814) ==46463== by 0x40762C: find_address_in_section (addr2line.c:187) ==46463== by 0x43D55B: bfd_map_over_sections (section.c:1395) ==46463== by 0x405F12: translate_addresses (addr2line.c:265) ==46463== by 0x405F12: process_file (addr2line.c:402) ==46463== by 0x405F12: main (addr2line.c:509) -- 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