33164 – libndb new security issues CVE-2023-5871 and CVE-2023-5215

Bug 33164 - libndb new security issues CVE-2023-5871 and CVE-2023-5215

Summary: libndb new security issues CVE-2023-5871 and CVE-2023-5215

Status:	RESOLVED FIXED

Alias:	None

Product:	Mageia
Classification:	Unclassified
Component:	Security (show other bugs)
Version:	9
Hardware:	All Linux

Priority:	Normal Severity: normal
Target Milestone:	---
Assignee:	QA Team
QA Contact:	Sec team

URL:
Whiteboard:	MGA9-64-OK
Keywords:	advisory, validated_update

Depends on:
Blocks:

Reported:	2024-04-30 17:33 CEST by Nicolas Salguero
Modified:	2024-05-10 18:10 CEST (History)
CC List:	4 users (show)

See Also:
Source RPM:	libnbd-1.15.8-3.mga9.src.rpm
CVE:	CVE-2023-5215
Status comment:

Attachments
Add an attachment (proposed patch, testcase, etc.)

Description Nicolas Salguero 2024-04-30 17:33:10 CEST

RedHat has issued an advisory on April 30:
https://lwn.net/Articles/971701/

Nicolas Salguero 2024-04-30 17:33:40 CEST

Source RPM: (none) => libnbd-1.17.5-4.mga10.src.rpm
CVE: (none) => CVE-2023-5871, CVE-2023-5215
Whiteboard: (none) => MGA9TOO

Comment 1 Lewis Smith 2024-04-30 20:27:26 CEST

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-5871
Neither here nor the RedHat URL indicates the fix, but the latter says "An update for libnbd is now available".
There is a better generic CVE site which is more comprehensive, but I have forgotten it.

Assigning globally hoping someone can discover more.

Assignee: bugsquad => pkg-bugs

Comment 2 Nicolas Salguero 2024-05-02 13:58:32 CEST

CVE-2023-5871 only concerns Cauldron.

Comment 3 Nicolas Salguero 2024-05-02 14:25:42 CEST

Suggested advisory:
========================

The updated packages fix a security vulnerability:

A flaw was found in libnbd. A server can reply with a block size larger than 2^63 (the NBD spec states the size is a 64-bit unsigned value). This issue could lead to an application crash or other unintended behavior for NBD clients that doesn't treat the return value of the nbd_get_size() function correctly. (CVE-2023-5215)

References:
https://lwn.net/Articles/971701/
========================

Updated packages in core/updates_testing:
========================
lib(64)nbd0-1.15.8-3.1.mga9
lib(64)nbd-devel-1.15.8-3.1.mga9
libnbd-1.15.8-3.1.mga9
libnbd-bash-completion-1.15.8-3.1.mga9
nbdfuse-1.15.8-3.1.mga9
nbdublk-1.15.8-3.1.mga9
ocaml-libnbd-1.15.8-3.1.mga9
ocaml-libnbd-devel-1.15.8-3.1.mga9
python3-libnbd-1.15.8-3.1.mga9

from SRPM:
libnbd-1.15.8-3.1.mga9.src.rpm

Whiteboard: MGA9TOO => (none)
Version: Cauldron => 9
Assignee: pkg-bugs => qa-bugs
Status: NEW => ASSIGNED
CVE: CVE-2023-5871, CVE-2023-5215 => CVE-2023-5215
Source RPM: libnbd-1.17.5-4.mga10.src.rpm => libnbd-1.15.8-3.mga9.src.rpm

PC LX 2024-05-02 18:01:39 CEST

CC: (none) => mageia

katnatek 2024-05-02 19:50:20 CEST

Keywords: (none) => advisory

Comment 4 Len Lawrence 2024-05-05 19:39:07 CEST

CVE-2023-5215
There appears to be a test that can be run to demonstrate the problem but it involves qemu, about which I know nothing:
https://listman.redhat.com/archives/libguestfs/2023-September/032635.html

$ qemu-nbd -f raw -r file -t &
<That does not work in the absence of meaningful files>
$ nbdsh --base -u nbd://localhost -c - <<\EOF
This should return a large negative number before the update.
After the update expect to see a proper error report.

CC: (none) => tarazed25

Comment 5 katnatek 2024-05-06 01:13:16 CEST

RH mageia 9 x86_64 

Not previous round, I test Install/Uninstall

 LC_ALL=C urpmi /home/katnatek/qa-testing/x86_64/*.rpm
To satisfy dependencies, the following packages are going to be installed:
  Package                        Version      Release       Arch    
(medium "Core Release (distrib1)")
  lib64event-devel               2.1.12       4.mga9        x86_64  
  lib64ffi-devel                 3.4.4        1.mga9        x86_64  
  lib64gmp-devel                 6.2.1        3.mga9        x86_64  
  lib64mnl-devel                 1.0.5        1.mga9        x86_64  
  lib64nettle-devel              3.9          1.mga9        x86_64  
  lib64p11-kit-devel             0.24.1       2.mga9        x86_64  
  lib64tasn1-devel               4.19.0       1.mga9        x86_64  
  lib64ublksrv0                  1.0          3.mga9        x86_64  
  libtasn1-tools                 4.19.0       1.mga9        x86_64  
(medium "Core Updates (distrib3)")
  gnutls                         3.8.4        1.mga9        x86_64  
  lib64gnutls-dane0              3.8.4        1.mga9        x86_64  
  lib64gnutls-devel              3.8.4        1.mga9        x86_64  
  lib64gnutlsxx30                3.8.4        1.mga9        x86_64  
  lib64python3-devel             3.10.11      1.2.mga9      x86_64  
  lib64python3.10-testsuite      3.10.11      1.2.mga9      x86_64  (recommended)
  lib64unbound-devel             1.19.1       1.mga9        x86_64  
  lib64xml2-devel                2.10.4       1.2.mga9      x86_64  
  python3-docs                   3.10.11      1.2.mga9      noarch  (recommended)
  tkinter3                       3.10.11      1.2.mga9      x86_64  (recommended)
(command line)
  lib64nbd-devel                 1.15.8       3.1.mga9      x86_64  
  lib64nbd0                      1.15.8       3.1.mga9      x86_64  
  libnbd                         1.15.8       3.1.mga9      x86_64  
  libnbd-bash-completion         1.15.8       3.1.mga9      noarch  
  nbdfuse                        1.15.8       3.1.mga9      x86_64  
  nbdublk                        1.15.8       3.1.mga9      x86_64  
  ocaml-libnbd                   1.15.8       3.1.mga9      x86_64  
  ocaml-libnbd-devel             1.15.8       3.1.mga9      x86_64  
  python3-libnbd                 1.15.8       3.1.mga9      x86_64  
166MB of additional disk space will be used.
24MB of packages will be retrieved.
Proceed with the installation of the 28 packages? (Y/n) y


    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/release/libtasn1-tools-4.19.0-1.mga9.x86_64.rpm
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/release/lib64tasn1-devel-4.19.0-1.mga9.x86_64.rpm      
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/release/lib64gmp-devel-6.2.1-3.mga9.x86_64.rpm         
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/release/lib64ffi-devel-3.4.4-1.mga9.x86_64.rpm         
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/release/lib64p11-kit-devel-0.24.1-2.mga9.x86_64.rpm    
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/release/lib64ublksrv0-1.0-3.mga9.x86_64.rpm            
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/release/lib64mnl-devel-1.0.5-1.mga9.x86_64.rpm         
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/release/lib64event-devel-2.1.12-4.mga9.x86_64.rpm      
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/release/lib64nettle-devel-3.9-1.mga9.x86_64.rpm        
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/updates/lib64python3-devel-3.10.11-1.2.mga9.x86_64.rpm 
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/updates/python3-docs-3.10.11-1.2.mga9.noarch.rpm       
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/updates/lib64xml2-devel-2.10.4-1.2.mga9.x86_64.rpm     
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/updates/lib64gnutls-dane0-3.8.4-1.mga9.x86_64.rpm      
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/updates/lib64python3.10-testsuite-3.10.11-1.2.mga9.x86_64.rpm
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/updates/gnutls-3.8.4-1.mga9.x86_64.rpm                 
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/updates/lib64gnutls-devel-3.8.4-1.mga9.x86_64.rpm      
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/updates/tkinter3-3.10.11-1.2.mga9.x86_64.rpm           
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/updates/lib64unbound-devel-1.19.1-1.mga9.x86_64.rpm    
    https://mirror.math.princeton.edu/pub/mageia/distrib/9/x86_64/media/core/updates/lib64gnutlsxx30-3.8.4-1.mga9.x86_64.rpm        
installing /var/cache/urpmi/rpms/lib64python3-devel-3.10.11-1.2.mga9.x86_64.rpm                                                     
/var/cache/urpmi/rpms/gnutls-3.8.4-1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64ffi-devel-3.4.4-1.mga9.x86_64.rpm
/home/katnatek/qa-testing/x86_64/lib64nbd-devel-1.15.8-3.1.mga9.x86_64.rpm
/home/katnatek/qa-testing/x86_64/libnbd-bash-completion-1.15.8-3.1.mga9.noarch.rpm
/var/cache/urpmi/rpms/lib64gnutlsxx30-3.8.4-1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64unbound-devel-1.19.1-1.mga9.x86_64.rpm
/home/katnatek/qa-testing/x86_64/ocaml-libnbd-devel-1.15.8-3.1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64xml2-devel-2.10.4-1.2.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64p11-kit-devel-0.24.1-2.mga9.x86_64.rpm
/home/katnatek/qa-testing/x86_64/libnbd-1.15.8-3.1.mga9.x86_64.rpm
/home/katnatek/qa-testing/x86_64/python3-libnbd-1.15.8-3.1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64gnutls-devel-3.8.4-1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64mnl-devel-1.0.5-1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64event-devel-2.1.12-4.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64tasn1-devel-4.19.0-1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/python3-docs-3.10.11-1.2.mga9.noarch.rpm
/home/katnatek/qa-testing/x86_64/nbdublk-1.15.8-3.1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64gnutls-dane0-3.8.4-1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64python3.10-testsuite-3.10.11-1.2.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64ublksrv0-1.0-3.mga9.x86_64.rpm
/var/cache/urpmi/rpms/tkinter3-3.10.11-1.2.mga9.x86_64.rpm
/home/katnatek/qa-testing/x86_64/lib64nbd0-1.15.8-3.1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/libtasn1-tools-4.19.0-1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64gmp-devel-6.2.1-3.mga9.x86_64.rpm
/home/katnatek/qa-testing/x86_64/ocaml-libnbd-1.15.8-3.1.mga9.x86_64.rpm
/home/katnatek/qa-testing/x86_64/nbdfuse-1.15.8-3.1.mga9.x86_64.rpm
/var/cache/urpmi/rpms/lib64nettle-devel-3.9-1.mga9.x86_64.rpm
Preparing...                     ##################################################################################################
     1/28: lib64nbd0             ##################################################################################################
     2/28: libnbd                ##################################################################################################
     3/28: lib64gmp-devel        ##################################################################################################
     4/28: lib64gnutls-dane0     ##################################################################################################
     5/28: gnutls                ##################################################################################################
     6/28: lib64nettle-devel     ##################################################################################################
     7/28: ocaml-libnbd          ##################################################################################################
     8/28: libtasn1-tools        ##################################################################################################
     9/28: lib64tasn1-devel      ##################################################################################################
    10/28: tkinter3              ##################################################################################################
    11/28: lib64python3.10-testsuite
                                 ##################################################################################################
    12/28: lib64ublksrv0         ##################################################################################################
    13/28: python3-docs          ##################################################################################################
    14/28: lib64python3-devel    ##################################################################################################
    15/28: lib64event-devel      ##################################################################################################
    16/28: lib64mnl-devel        ##################################################################################################
    17/28: lib64unbound-devel    ##################################################################################################
    18/28: lib64xml2-devel       ##################################################################################################
    19/28: lib64gnutlsxx30       ##################################################################################################
    20/28: lib64ffi-devel        ##################################################################################################
    21/28: lib64p11-kit-devel    ##################################################################################################
    22/28: lib64gnutls-devel     ##################################################################################################
    23/28: lib64nbd-devel        ##################################################################################################
    24/28: nbdublk               ##################################################################################################
    25/28: ocaml-libnbd-devel    ##################################################################################################
    26/28: libnbd-bash-completion
                                 ##################################################################################################
    27/28: python3-libnbd        ##################################################################################################
    28/28: nbdfuse               ##################################################################################################

LC_ALL=C urpme $(rpm -qa|grep nbd)
removing lib64nbd-devel-1.15.8-3.1.mga9.x86_64 lib64nbd0-1.15.8-3.1.mga9.x86_64 libnbd-1.15.8-3.1.mga9.x86_64 libnbd-bash-completion-1.15.8-3.1.mga9.noarch nbdfuse-1.15.8-3.1.mga9.x86_64 nbdublk-1.15.8-3.1.mga9.x86_64 ocaml-libnbd-1.15.8-3.1.mga9.x86_64 ocaml-libnbd-devel-1.15.8-3.1.mga9.x86_64 python3-libnbd-1.15.8-3.1.mga9.x86_64
removing package ocaml-libnbd-devel-1.15.8-3.1.mga9.x86_64
      1/9: removing ocaml-libnbd-devel-1.15.8-3.1.mga9.x86_64
                                 ##################################################################################################
removing package lib64nbd-devel-1.15.8-3.1.mga9.x86_64
      2/9: removing lib64nbd-devel-1.15.8-3.1.mga9.x86_64
                                 ##################################################################################################
removing package libnbd-bash-completion-1.15.8-3.1.mga9.noarch
      3/9: removing libnbd-bash-completion-1.15.8-3.1.mga9.noarch
                                 ##################################################################################################
removing package ocaml-libnbd-1.15.8-3.1.mga9.x86_64
      4/9: removing ocaml-libnbd-1.15.8-3.1.mga9.x86_64
                                 ##################################################################################################
removing package python3-libnbd-1.15.8-3.1.mga9.x86_64
      5/9: removing python3-libnbd-1.15.8-3.1.mga9.x86_64
                                 ##################################################################################################
removing package nbdublk-1.15.8-3.1.mga9.x86_64
      6/9: removing nbdublk-1.15.8-3.1.mga9.x86_64
                                 ##################################################################################################
removing package libnbd-1.15.8-3.1.mga9.x86_64
      7/9: removing libnbd-1.15.8-3.1.mga9.x86_64
                                 ##################################################################################################
removing package nbdfuse-1.15.8-3.1.mga9.x86_64
      8/9: removing nbdfuse-1.15.8-3.1.mga9.x86_64
                                 ##################################################################################################
removing package lib64nbd0-1.15.8-3.1.mga9.x86_64
      9/9: removing lib64nbd0-1.15.8-3.1.mga9.x86_64
                                 ##################################################################################################
writing /var/lib/rpm/installed-through-deps.list

The following packages:
  gnutls-3.8.4-1.mga9.x86_64
  lib64event-devel-2.1.12-4.mga9.x86_64
  lib64ffi-devel-3.4.4-1.mga9.x86_64
  lib64gmp-devel-6.2.1-3.mga9.x86_64
  lib64gnutls-dane0-3.8.4-1.mga9.x86_64
  lib64gnutls-devel-3.8.4-1.mga9.x86_64
  lib64gnutlsxx30-3.8.4-1.mga9.x86_64
  lib64mnl-devel-1.0.5-1.mga9.x86_64
  lib64nettle-devel-3.9-1.mga9.x86_64
  lib64p11-kit-devel-0.24.1-2.mga9.x86_64
  lib64python3-devel-3.10.11-1.2.mga9.x86_64
  lib64python3.10-testsuite-3.10.11-1.2.mga9.x86_64
  lib64tasn1-devel-4.19.0-1.mga9.x86_64
  lib64ublksrv0-1.0-3.mga9.x86_64
  lib64unbound-devel-1.19.1-1.mga9.x86_64
  lib64xml2-devel-2.10.4-1.2.mga9.x86_64
  libtasn1-tools-4.19.0-1.mga9.x86_64
  python3-docs-3.10.11-1.2.mga9.noarch
  tkinter3-3.10.11-1.2.mga9.x86_64
are now orphaned, if you wish to remove them, you can use "urpme --auto-orphans"

 LC_ALL=C urpme --auto-orphans --auto
removing gnutls-3.8.4-1.mga9.x86_64 lib64event-devel-2.1.12-4.mga9.x86_64 lib64ffi-devel-3.4.4-1.mga9.x86_64 lib64gmp-devel-6.2.1-3.mga9.x86_64 lib64gnutls-dane0-3.8.4-1.mga9.x86_64 lib64gnutls-devel-3.8.4-1.mga9.x86_64 lib64gnutlsxx30-3.8.4-1.mga9.x86_64 lib64mnl-devel-1.0.5-1.mga9.x86_64 lib64nettle-devel-3.9-1.mga9.x86_64 lib64p11-kit-devel-0.24.1-2.mga9.x86_64 lib64python3-devel-3.10.11-1.2.mga9.x86_64 lib64python3.10-testsuite-3.10.11-1.2.mga9.x86_64 lib64tasn1-devel-4.19.0-1.mga9.x86_64 lib64ublksrv0-1.0-3.mga9.x86_64 lib64unbound-devel-1.19.1-1.mga9.x86_64 lib64xml2-devel-2.10.4-1.2.mga9.x86_64 libtasn1-tools-4.19.0-1.mga9.x86_64 python3-docs-3.10.11-1.2.mga9.noarch tkinter3-3.10.11-1.2.mga9.x86_64
removing package lib64gnutls-devel-3.8.4-1.mga9.x86_64
     1/19: removing lib64gnutls-devel-3.8.4-1.mga9.x86_64
                                 ##################################################################################################
removing package lib64unbound-devel-1.19.1-1.mga9.x86_64
     2/19: removing lib64unbound-devel-1.19.1-1.mga9.x86_64
                                 ##################################################################################################
removing package lib64nettle-devel-1:3.9-1.mga9.x86_64
     3/19: removing lib64nettle-devel-1:3.9-1.mga9.x86_64
                                 ##################################################################################################
removing package lib64tasn1-devel-4.19.0-1.mga9.x86_64
     4/19: removing lib64tasn1-devel-4.19.0-1.mga9.x86_64
                                 ##################################################################################################
removing package lib64gmp-devel-6.2.1-3.mga9.x86_64
     5/19: removing lib64gmp-devel-6.2.1-3.mga9.x86_64
                                 ##################################################################################################
removing package lib64event-devel-2.1.12-4.mga9.x86_64
     6/19: removing lib64event-devel-2.1.12-4.mga9.x86_64
                                 ##################################################################################################
removing package lib64mnl-devel-1.0.5-1.mga9.x86_64
     7/19: removing lib64mnl-devel-1.0.5-1.mga9.x86_64
                                 ##################################################################################################
removing package lib64xml2-devel-2.10.4-1.2.mga9.x86_64
     8/19: removing lib64xml2-devel-2.10.4-1.2.mga9.x86_64
                                 ##################################################################################################
removing package lib64python3-devel-3.10.11-1.2.mga9.x86_64
     9/19: removing lib64python3-devel-3.10.11-1.2.mga9.x86_64
                                 ##################################################################################################
removing package gnutls-3.8.4-1.mga9.x86_64
    10/19: removing gnutls-3.8.4-1.mga9.x86_64
                                 ##################################################################################################
removing package lib64python3.10-testsuite-3.10.11-1.2.mga9.x86_64
    11/19: removing lib64python3.10-testsuite-3.10.11-1.2.mga9.x86_64
                                 ##################################################################################################
removing package lib64p11-kit-devel-0.24.1-2.mga9.x86_64
    12/19: removing lib64p11-kit-devel-0.24.1-2.mga9.x86_64
                                 ##################################################################################################
removing package lib64ffi-devel-3.4.4-1.mga9.x86_64
    13/19: removing lib64ffi-devel-3.4.4-1.mga9.x86_64
                                 ##################################################################################################
removing package python3-docs-3.10.11-1.2.mga9.noarch
    14/19: removing python3-docs-3.10.11-1.2.mga9.noarch
                                 ##################################################################################################
removing package tkinter3-3.10.11-1.2.mga9.x86_64
    15/19: removing tkinter3-3.10.11-1.2.mga9.x86_64
                                 ##################################################################################################
removing package lib64gnutls-dane0-3.8.4-1.mga9.x86_64
    16/19: removing lib64gnutls-dane0-3.8.4-1.mga9.x86_64
                                 ##################################################################################################
removing package libtasn1-tools-4.19.0-1.mga9.x86_64
    17/19: removing libtasn1-tools-4.19.0-1.mga9.x86_64
                                 ##################################################################################################
removing package lib64gnutlsxx30-3.8.4-1.mga9.x86_64
    18/19: removing lib64gnutlsxx30-3.8.4-1.mga9.x86_64
                                 ##################################################################################################
removing package lib64ublksrv0-1.0-3.mga9.x86_64
    19/19: removing lib64ublksrv0-1.0-3.mga9.x86_64
                                 ##################################################################################################

Not problems found in that area

Comment 6 Len Lawrence 2024-05-08 21:56:18 CEST

Mageia9, x64
Installed the core packages and then updated via qarepo and drakrpm-update.

$ nbdsh

Welcome to nbdsh, the shell for interacting with
Network Block Device (NBD) servers.

The ‘nbd’ module has already been imported and there
is an open NBD handle called ‘h’ in state 'START'.

h.connect_tcp("remote", "10809")   # Connect to a remote server.
h.get_size()                       # Get size of the remote disk.
buf = h.pread(512, 0)              # Read the first sector.
exit() or Ctrl-D                   # Quit the shell
help(nbd)                          # Display documentation

nbd> help(nbd)

The documentation leads to information about the python API.
Taking the script above at face value, tried running it but that failed,
implying that the nbd module had NOT been set up:

nbd> h.connect_tcp("canopus", "10809")
Traceback (most recent call last):
  File "<console>", line 1, in <module>
NameError: name 'h' is not defined
nbd> 

$ cat /etc/services | grep nbd
nbd             10809/tcp               # Linux Network Block Device
The same result on the remote PC.

The man page offers a different format for the connection which treats a slice
of RAM as a target, reports its size then copies a bytestring to it.
Tried that as well but h comes back as undefined again so it looks like the
shell does not set things up automatically.  It may be that the documentation
is stating an assumption that the user has already taken care of h.

I am at a loss at this stage to see the way forward apart from poking around
on the web.

Comment 7 Len Lawrence 2024-05-08 22:06:47 CEST

In reply to Len Lawrence in comment 6:

Further along in the man page for nbdsh there is this:

      -n  Do not create the implicit handle "h".

which does suggest that invoking the shell should create the h module.

Unfortunately I did not try the command before updating.  Back later after trying the pre-update on the remote machine.

Comment 8 Len Lawrence 2024-05-08 22:17:28 CEST

Before that:

$ nbdsh -n

Welcome to nbdsh, the shell for interacting with
Network Block Device (NBD) servers.

The ‘nbd’ module has already been imported.

h = nbd.NBD()                      # Create a new handle.
h.connect_tcp("remote", "10809")   # Connect to a remote server.
h.get_size()                       # Get size of the remote disk.
buf = h.pread(512, 0)              # Read the first sector.
exit() or Ctrl-D                   # Quit the shell
help(nbd)                          # Display documentation

nbd> h = nbd.NBD()
nbd> h.connect_tcp("canopus", "10809")
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/lib64/python3.10/site-packages/nbd.py", line 1682, in connect_tcp
    return libnbdmod.connect_tcp(self._o, hostname, port)
nbd.Error: nbd_connect_tcp: recv: Connection refused (ECONNREFUSED)
nbd>

Comment 9 Len Lawrence 2024-05-09 18:17:00 CEST

Continuing from comment 8:
Tried another example.

$ nbdsh
[...]
nbd> e = nbd.NBD()
nbd> e.connect_command(["whatever", "-s", "memory", "1G"])whatever: Permission denied
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/lib64/python3.10/site-packages/nbd.py", line 1738, in connect_command
    return libnbdmod.connect_command(self._o, argv)
nbd.Error: nbd_connect_command: recv: server disconnected unexpectedly

Repeated that sequence without creating an empty file:

nbd> p = nbd.NBD()
nbd> p.connect_command(["./testfile", "-s", "memory", "1G"])
./testfile: No such file or directory
Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/usr/lib64/python3.10/site-packages/nbd.py", line 1738, in connect_command
    return libnbdmod.connect_command(self._o, argv)
nbd.Error: nbd_connect_command: recv: server disconnected unexpectedly

So the file must already exist.  The one used earlier had write permission across the board.

It looks like there is much more to this than the manual tells us so I shall have to abandon the "simple" tests.  Have to pass it on the basis of a clean update.

Whiteboard: (none) => MGA9-64-OK

katnatek 2024-05-10 04:34:09 CEST

CC: (none) => andrewsfarm

Comment 10 Thomas Andrews 2024-05-10 14:22:25 CEST

A valiant effort, Len. It does read to me like a situation of user inexperience, rather than a problem with the update itself. 

Validating.

CC: (none) => sysadmin-bugs
Keywords: (none) => validated_update

Comment 11 Len Lawrence 2024-05-10 16:02:40 CEST

Aye, user inexperience is a major factor in at least half of the software we deal with.

Comment 12 Thomas Andrews 2024-05-10 17:13:29 CEST

I've noticed that. ;-)

Comment 13 Mageia Robot 2024-05-10 18:10:36 CEST

An update for this issue has been pushed to the Mageia Updates repository.

https://advisories.mageia.org/MGASA-2024-0174.html

Resolution: (none) => FIXED
Status: ASSIGNED => RESOLVED

Note You need to log in before you can comment on or make changes to this bug.