zlib-ng: AddressSanitizer: heap-buffer-overflow in read_buf() deflate.c:1122

==21==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x6020000000d1 at pc 0x0000004eaceb bp 0x7ffc0b9f3f80 sp 0x7ffc0b9f3730
READ of size 3 at 0x6020000000d1 thread T0
SCARINESS: 15 (3-byte-read-heap-buffer-overflow)
    #0 0x4eacea in __asan_memmove /src/llvm/projects/compiler-rt/lib/asan/asan_interceptors_memintrinsics.cc:31
    #1 0x5ccf7d in read_buf /src/zlib-ng/deflate.c:1122:9
    #2 0x5e9a8b in fill_window_sse /src/zlib-ng/arch/x86/fill_window_sse.c:106:13
    #3 0x5cf0f9 in deflate_medium /src/zlib-ng/deflate_medium.c:215:13
    #4 0x5c6f4d in zng_deflate /src/zlib-ng/deflate.c:951:18
    #5 0x5bf769 in test_flush /src/zlib-ng/test/fuzz/compress_fuzzer.c:250:9
    #6 0x5c09e1 in LLVMFuzzerTestOneInput /src/zlib-ng/test/fuzz/compress_fuzzer.c:414:3
    #7 0x55a0b2 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/libfuzzer/FuzzerLoop.cpp:575:15
    #8 0x557ed7 in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool*) /src/libfuzzer/FuzzerLoop.cpp:481:3
    #9 0x55d46a in fuzzer::Fuzzer::ReadAndExecuteSeedCorpora(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, fuzzer::fuzzer_allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&) /src/libfuzzer/FuzzerLoop.cpp:770:5
    #10 0x55e798 in fuzzer::Fuzzer::Loop(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, fuzzer::fuzzer_allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&) /src/libfuzzer/FuzzerLoop.cpp:810:3
    #11 0x53cd76 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/libfuzzer/FuzzerDriver.cpp:766:6
    #12 0x52ffcc in main /src/libfuzzer/FuzzerMain.cpp:20:10
    #13 0x7f58e230682f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
    #14 0x41cd18 in _start (/out/compress_fuzzer+0x41cd18)

0x6020000000d1 is located 0 bytes to the right of 1-byte region [0x6020000000d0,0x6020000000d1)
allocated by thread T0 here:
    #0 0x52bc38 in operator new[](unsigned long) /src/llvm/projects/compiler-rt/lib/asan/asan_new_delete.cc:109
    #1 0x559e64 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) /src/libfuzzer/FuzzerLoop.cpp:562:23
    #2 0x557ed7 in fuzzer::Fuzzer::RunOne(unsigned char const*, unsigned long, bool, fuzzer::InputInfo*, bool*) /src/libfuzzer/FuzzerLoop.cpp:481:3
    #3 0x55d46a in fuzzer::Fuzzer::ReadAndExecuteSeedCorpora(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, fuzzer::fuzzer_allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&) /src/libfuzzer/FuzzerLoop.cpp:770:5
    #4 0x55e798 in fuzzer::Fuzzer::Loop(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, fuzzer::fuzzer_allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&) /src/libfuzzer/FuzzerLoop.cpp:810:3
    #5 0x53cd76 in fuzzer::FuzzerDriver(int*, char***, int (*)(unsigned char const*, unsigned long)) /src/libfuzzer/FuzzerDriver.cpp:766:6
    #6 0x52ffcc in main /src/libfuzzer/FuzzerMain.cpp:20:10
    #7 0x7f58e230682f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)

SUMMARY: AddressSanitizer: heap-buffer-overflow /src/llvm/projects/compiler-rt/lib/asan/asan_interceptors_memintrinsics.cc:31 in __asan_memmove
Shadow bytes around the buggy address:
  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 00 00 fa fa 00 fa fa fa 00 fa fa fa 00 fa
=>0x0c047fff8010: fa fa fd fa fa fa 01 fa fa fa[01]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
  0x0c047fff8060: 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
==21==ABORTING