Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Compiled in Ubuntu20.04,got global-buffer-overflow in kernel_startup_bootstrap.It should be false positve report. #4

Open
fatgrass opened this issue Apr 6, 2022 · 0 comments

Comments

@fatgrass
Copy link

fatgrass commented Apr 6, 2022

=================================================================
==882421==ERROR: AddressSanitizer: global-buffer-overflow on address 0x0000015021f8 at pc 0x000000f8bb2d bp 0x7fff205d4b60 sp 0x7fff205d4b58
READ of size 4 at 0x0000015021f8 thread T0
#0 0xf8bb2c in startup_entry_cmp /home/test/Downloads/tmp/SockFuzzer-main/build/../third_party/xnu/osfmk/kern/startup.c:259:25
#1 0x50af5b in qsort (/home/test/Downloads/SockFuzzer-main/build/net_fuzzer+0x50af5b)
#2 0xf8bc01 in kernel_startup_bootstrap /home/test/Downloads/tmp/SockFuzzer-main/build/../third_party/xnu/osfmk/kern/startup.c:287:2
#3 0xd1f082 in initialize_network /home/test/Downloads/tmp/SockFuzzer-main/build/../fuzz/api/backend.c:143:3
#4 0xd3446a in TestOneProtoInput(Session const&) /home/test/Downloads/tmp/SockFuzzer-main/build/../fuzz/net_fuzzer.cc:670:5
#5 0xd33a88 in LLVMFuzzerTestOneInput /home/test/Downloads/tmp/SockFuzzer-main/build/../fuzz/net_fuzzer.cc:665:1
#6 0x464961 in fuzzer::Fuzzer::ExecuteCallback(unsigned char const*, unsigned long) (/home/test/Downloads/SockFuzzer-main/build/net_fuzzer+0x464961)
#7 0x46669a in fuzzer::Fuzzer::ReadAndExecuteSeedCorpora(std::__Fuzzer::vector<fuzzer::SizedFile, fuzzer::fuzzer_allocatorfuzzer::SizedFile >&) (/home/test/Downloads/SockFuzzer-main/build/net_fuzzer+0x46669a)
#8 0x466d29 in fuzzer::Fuzzer::Loop(std::__Fuzzer::vector<fuzzer::SizedFile, fuzzer::fuzzer_allocatorfuzzer::SizedFile >&) (/home/test/Downloads/SockFuzzer-main/build/net_fuzzer+0x466d29)
#9 0x4559fe in fuzzer::FuzzerDriver(int*, char***, int ()(unsigned char const, unsigned long)) (/home/test/Downloads/SockFuzzer-main/build/net_fuzzer+0x4559fe)
#10 0x47e842 in main (/home/test/Downloads/SockFuzzer-main/build/net_fuzzer+0x47e842)
#11 0x7fb5fdf960b2 in __libc_start_main /build/glibc-sMfBJT/glibc-2.31/csu/../csu/libc-start.c:308:16
#12 0x42a79d in _start (/home/test/Downloads/SockFuzzer-main/build/net_fuzzer+0x42a79d)

0x0000015021f8 is located 40 bytes to the left of global variable '__startup_LOCKS_EARLY_entry_lck_grp_startup_init_133' defined in '../third_party/xnu/bsd/kern/kern_control.c:133:8' (0x1502220) of size 24
0x0000015021f8 is located 0 bytes to the right of global variable '__startup_LOCKS_EARLY_entry_lck_attr_startup_init_132' defined in '../third_party/xnu/bsd/kern/kern_control.c:132:8' (0x15021e0) of size 24
SUMMARY: AddressSanitizer: global-buffer-overflow /home/test/Downloads/tmp/SockFuzzer-main/build/../third_party/xnu/osfmk/kern/startup.c:259:25 in startup_entry_cmp
Shadow bytes around the buggy address:
0x0000802983e0: f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9 06 f9 f9 f9
0x0000802983f0: f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9 00 03 f9 f9
0x000080298400: f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9 00 04 f9 f9
0x000080298410: f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9 00 03 f9 f9
0x000080298420: f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9 03 f9 f9 f9
=>0x000080298430: f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9 00 00 00[f9]
0x000080298440: f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9 00 00 00 f9
0x000080298450: f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9 00 00 00 f9
0x000080298460: f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9 00 00 00 f9
0x000080298470: f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9 00 00 00 f9
0x000080298480: f9 f9 f9 f9 00 00 00 f9 f9 f9 f9 f9 00 00 00 f9
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
==882421==ABORTING
MS: 0 ; base unit: 0000000000000000000000000000000000000000

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

1 participant