setup/fuzz.exe - AddressSanitizer: heap-use-after-free /home/runner/work/onefuzz/onefuzz/src/integration-tests/libfuzzer/simple.c:48:59 in LLVMFuzzerTestOneInput

[chkeita]

Files

• input: crash-8b2bc54c2a1aee7dafaf9d0d0901b590a1c8a7ab
• exe: setup/fuzz.exe
• report: f24655e508e661cdb4b8ca59be129300233ce75f4a8d92ad9475d78a92a3fba9.json

Repro

onefuzz --endpoint https://chkeitaonefuzz2.azurewebsites.net repro create_and_connect oft-reports-cecbd958a1f257688f9768edaaf6c94d f24655e508e661cdb4b8ca59be129300233ce75f4a8d92ad9475d78a92a3fba9.json

Call Stack

#1 0x43b271 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x43b271)
#2 0x423767 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x423767)
#3 0x429741 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x429741)
#4 0x4557a2 in main (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x4557a2)
#5 0x7ffff6a99bf6 in __libc_start_main /build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310
#6 0x41db59 in _start (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x41db59)

ASAN Log

INFO: Loaded 1 modules   (22 inline 8-bit counters): 22 [0x738f28, 0x738f3e), 
INFO: Loaded 1 PC tables (22 PCs): 22 [0x5144a8,0x514608), 
setup/fuzz.exe: Running 1 inputs 1 time(s) each.
Running: /onefuzz/31d26042-d084-40f8-88ce-7fb847fcf606/task_crashes_1/crash-8b2bc54c2a1aee7dafaf9d0d0901b590a1c8a7ab
=================================================================
==4950==ERROR: AddressSanitizer: heap-use-after-free on address 0x602000000010 at pc 0x0000004fd64d bp 0x7fffffffe230 sp 0x7fffffffe228
WRITE of size 4 at 0x602000000010 thread T0
    #0 0x4fd64c in LLVMFuzzerTestOneInput /home/runner/work/onefuzz/onefuzz/src/integration-tests/libfuzzer/simple.c:48:59
    #1 0x43b271 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x43b271)
    #2 0x423767 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x423767)
    #3 0x429741 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x429741)
    #4 0x4557a2 in main (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x4557a2)
    #5 0x7ffff6a99bf6 in __libc_start_main /build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310
    #6 0x41db59 in _start (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x41db59)

0x602000000010 is located 0 bytes inside of 4-byte region [0x602000000010,0x602000000014)
freed by thread T0 here:
    #0 0x4cd36d in free (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x4cd36d)
    #1 0x4fd604 in LLVMFuzzerTestOneInput /home/runner/work/onefuzz/onefuzz/src/integration-tests/libfuzzer/simple.c:48:47
    #2 0x43b271 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x43b271)
    #3 0x423767 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x423767)
    #4 0x429741 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x429741)
    #5 0x4557a2 in main (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x4557a2)
    #6 0x7ffff6a99bf6 in __libc_start_main /build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310

previously allocated by thread T0 here:
    #0 0x4cd5ed in malloc (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x4cd5ed)
    #1 0x4fd5ee in LLVMFuzzerTestOneInput /home/runner/work/onefuzz/onefuzz/src/integration-tests/libfuzzer/simple.c:48:26
    #2 0x43b271 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x43b271)
    #3 0x423767 in fuzzer::RunOneTest(fuzzer::Fuzzer*, char const*, unsigned long) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x423767)
    #4 0x429741 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x429741)
    #5 0x4557a2 in main (/onefuzz/blob-containers/fuzz27ee6imdmr5gy/fuzz.exe+0x4557a2)
    #6 0x7ffff6a99bf6 in __libc_start_main /build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310

SUMMARY: AddressSanitizer: heap-use-after-free /home/runner/work/onefuzz/onefuzz/src/integration-tests/libfuzzer/simple.c:48:59 in LLVMFuzzerTestOneInput
Shadow bytes around the buggy address:
  0x0c047fff7fb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c047fff7fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c047fff7fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c047fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c047fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c047fff8000: fa fa[fd]fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8010: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8020: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8050: 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
  Shadow gap:              cc
==4950==ABORTING