[Pkg-samba-maint] Bug#1053128: smbclient: "smbtree -N" causes a segfault when "server min protocol = NT1"

[Dmitry]

Package: smbclient
Version: 2:4.17.10+dfsg-0+deb12u1
Severity: important
X-Debbugs-Cc: dmitry.s.telegin at gmail.com

Dear Maintainer,

   * What led up to the situation?

1. apt install samba smbclient
2. nano /etc/samba/smb.conf
3. I added the line "server min protocol = NT1" after [global].
4. I saved the file and closed the editor.
5. testparm -s
6. systemctl restart smbd nmbd
7. smbtree -N --option="client min protocol=NT1"

   * What was the outcome of this action?

PANIC (pid 2395): Signal 11: Segmentation fault in 4.17.10-Debian
BACKTRACE: 14 stack frames:
 #0 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(log_stack_trace+0x2e) [0x7fc8789c955e]
 #1 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(smb_panic+0x9) [0x7fc8789c97b9]
 #2 /usr/lib/x86_64-linux-gnu/samba/libgenrand-samba4.so.0(+0x1851) [0x7fc8789c9851]
 #3 /lib/x86_64-linux-gnu/libc.so.6(+0x3bfd0) [0x7fc878b32fd0]
 #4 /lib/x86_64-linux-gnu/libbsd.so.0(strlcpy+0x10) [0x7fc878ce45e0]
 #5 /lib/x86_64-linux-gnu/libsmbclient.so.0(+0x14280) [0x7fc878f3b280]
 #6 /lib/x86_64-linux-gnu/libsmbclient.so.0(+0x14809) [0x7fc878f3b809]
 #7 /lib/x86_64-linux-gnu/libsmbclient.so.0(+0x1491c) [0x7fc878f3b91c]
 #8 /lib/x86_64-linux-gnu/libsmbclient.so.0(+0x15430) [0x7fc878f3c430]
 #9 /lib/x86_64-linux-gnu/libsmbclient.so.0(+0xd187) [0x7fc878f34187]
 #10 smbtree(main+0x25a) [0x564c2a2bb68a]
 #11 /lib/x86_64-linux-gnu/libc.so.6(+0x271ca) [0x7fc878b1e1ca]
 #12 /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x85) [0x7fc878b1e285]
 #13 smbtree(_start+0x21) [0x564c2a2bbb11]
smb_panic(): calling panic action [/usr/share/samba/panic-action 2395]
smb_panic(): action returned status 0
Can not dump core: corepath not set up

   * What outcome did you expect instead?

Display network resources without crashing.

p.s. Without "-N" the utility works correctly.


-- System Information:
Debian Release: 12.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.1.0-12-amd64 (SMP w/4 CPU threads; PREEMPT)
Locale: LANG=C, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages smbclient depends on:
ii  libarchive13  3.6.2-1
ii  libbsd0       0.11.7-2
ii  libc6         2.36-9+deb12u1
ii  libgnutls30   3.7.9-2
ii  libpopt0      1.19+dfsg-1
ii  libreadline8  8.2-1.3
ii  libsmbclient  2:4.17.10+dfsg-0+deb12u1
ii  libtalloc2    2.4.0-f2
ii  libtevent0    0.14.1-1
ii  samba-common  2:4.17.10+dfsg-0+deb12u1
ii  samba-libs    2:4.17.10+dfsg-0+deb12u1

smbclient recommends no packages.

Versions of packages smbclient suggests:
pn  cifs-utils       <none>
pn  heimdal-clients  <none>

-- no debconf information