Repository HEAD during verification:
cef60fd581c508f1193410f2eb1a9c6cd73523ae

Compiler:
gcc.exe (MinGW-W64 x86_64-ucrt-posix-seh, built by Brecht Sanders, r7) 15.2.0

Build command:
gcc -std=c11 -Wall -Wextra -O0 -g -o libssh2-cve-2026-55200-poc\cve_2026_55200_probe.exe libssh2-cve-2026-55200-poc\poc\cve_2026_55200_probe.c

Built binary SHA256:
06BD85420C0B9DD29681637EFD83F4C5791357CEDF53859183D88018C0375920

Source comment check:
rg "//|/\*|\*/" libssh2-cve-2026-55200-poc\poc\cve_2026_55200_probe.c
exit status: 1
meaning: no comment markers matched

Default benign run:
libssh2-cve-2026-55200-poc\cve_2026_55200_probe.exe

benign CVE-2026-55200 proof
build_size_t_bytes=8
build_size_t_bits=64
packet_length=0xffffffff (4294967295)
mac_len=0
auth_len=16
mathematical_total=4294967315
vulnerable32_decision=accepted
vulnerable32_total=19
vulnerable32_allocation=19
fullpacket_style_length=4294967294
allocation_gap=4294967275
fixed32_decision=rejected: out of boundary
native_unpatched_decision=rejected: out of boundary
native_unpatched_total=4294967315
native_note=64-bit native arithmetic rejects this default input; modeled 32-bit arithmetic remains vulnerable
result=PASS

Native-size run:
libssh2-cve-2026-55200-poc\cve_2026_55200_probe.exe --native

native-size_t check
build_size_t_bytes=8
build_size_t_bits=64
unpatched_decision=rejected: out of boundary
unpatched_total=4294967315
unpatched_allocation=0
fixed_decision=rejected: out of boundary
fixed_total=0
fixed_allocation=0

Detailed arithmetic run:
libssh2-cve-2026-55200-poc\cve_2026_55200_probe.exe --check

detailed CVE-2026-55200 arithmetic check
build_size_t_bytes=8
build_size_t_bits=64
packet_length=0xffffffff (4294967295)
mac_len=0
auth_len=16
mathematical_total=4294967315
vulnerable32_total=19
vulnerable32_decision=accepted
vulnerable32_allocation=19
fullpacket_style_length=4294967294
fixed32_decision=rejected: out of boundary
native_unpatched_decision=rejected: out of boundary
native_unpatched_total=4294967315

Final scratch verification build command:
gcc -std=c11 -Wall -Wextra -O0 -g -o ..\cve_2026_55200_probe_verify.exe libssh2-cve-2026-55200-poc\poc\cve_2026_55200_probe.c

Final scratch verification binary SHA256:
7220CDCF99CE3E456D5E709CF94762FBE502B1782B4F4494FB5D4CD0C9BD5277

Final scratch verification result:
default run result=PASS
--native exited 0
--check exited 0