# Security update for nbdkit

Announcement ID: SUSE-SU-2025:01889-1  
Release Date: 2025-06-11T05:43:41Z  
Rating: moderate  
References:

  * bsc#1243108
  * bsc#1243110

  
Cross-References:

  * CVE-2025-47711
  * CVE-2025-47712

  
CVSS scores:

  * CVE-2025-47711 ( SUSE ):  7.1
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-47711 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-47711 ( NVD ):  4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
  * CVE-2025-47712 ( SUSE ):  5.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-47712 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-47712 ( NVD ):  4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

  
Affected Products:

  * openSUSE Leap 15.4
  * openSUSE Leap 15.6
  * Server Applications Module 15-SP6
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for nbdkit fixes the following issues:

Update to version 1.36.5.

Security fixes:

  * CVE-2025-47712: integer overflow in blocksize filter when processing client
    block status requests larger than 2**32 will trigger an assertion failure
    and cause a denial-of-service. (bsc#1243108).
  * CVE-2025-47711: off-by-one error when processing block status results from
    plugins on behalf of an NBD client may trigger an assertion failure and
    cause a denial of service (bsc#1243110).

Other fixes and changes:

  * tests: Add test-blkio.sh to unconditional EXTRA_DIST rule.
  * Revert "valgrind: Add suppression for liblzma bug".
  * vddk: Move "Unknown error" information to the manual.
  * ocaml Add better comments to the example plugin.
  * ocaml: Simplify pread operation.
  * ocaml: Define a struct handle to hold the OCaml handle.
  * ocaml: Add OCaml version to --dump-plugin output.
  * ocaml: Print callback name when an exception is printed.
  * ocaml: Combine all exception printing into a single macro.

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like
YaST online_update or "zypper patch".  
Alternatively you can run the command listed for your product:

  * openSUSE Leap 15.4  
    zypper in -t patch SUSE-2025-1889=1

  * openSUSE Leap 15.6  
    zypper in -t patch openSUSE-SLE-15.6-2025-1889=1

  * Server Applications Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP6-2025-1889=1

## Package List:

  * openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64 i586)
    * nbdkit-example-plugins-1.36.5-150400.3.9.1
    * nbdkit-xz-filter-1.36.5-150400.3.9.1
    * nbdkit-tmpdisk-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-python-plugin-1.36.5-150400.3.9.1
    * nbdkit-example-plugins-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-nbd-plugin-1.36.5-150400.3.9.1
    * nbdkit-server-1.36.5-150400.3.9.1
    * nbdkit-linuxdisk-plugin-1.36.5-150400.3.9.1
    * nbdkit-gzip-filter-1.36.5-150400.3.9.1
    * nbdkit-ssh-plugin-1.36.5-150400.3.9.1
    * nbdkit-basic-plugins-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-basic-plugins-1.36.5-150400.3.9.1
    * nbdkit-server-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-tar-filter-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-xz-filter-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-nbd-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-curl-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-gzip-filter-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-linuxdisk-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-python-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-1.36.5-150400.3.9.1
    * nbdkit-tmpdisk-plugin-1.36.5-150400.3.9.1
    * nbdkit-basic-filters-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-debugsource-1.36.5-150400.3.9.1
    * nbdkit-curl-plugin-1.36.5-150400.3.9.1
    * nbdkit-devel-1.36.5-150400.3.9.1
    * nbdkit-tar-filter-1.36.5-150400.3.9.1
    * nbdkit-basic-filters-1.36.5-150400.3.9.1
    * nbdkit-ssh-plugin-debuginfo-1.36.5-150400.3.9.1
  * openSUSE Leap 15.4 (noarch)
    * nbdkit-bash-completion-1.36.5-150400.3.9.1
  * openSUSE Leap 15.4 (x86_64)
    * nbdkit-vddk-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-vddk-plugin-1.36.5-150400.3.9.1
  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64)
    * nbdkit-example-plugins-1.36.5-150400.3.9.1
    * nbdkit-xz-filter-1.36.5-150400.3.9.1
    * nbdkit-tmpdisk-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-python-plugin-1.36.5-150400.3.9.1
    * nbdkit-example-plugins-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-nbd-plugin-1.36.5-150400.3.9.1
    * nbdkit-server-1.36.5-150400.3.9.1
    * nbdkit-linuxdisk-plugin-1.36.5-150400.3.9.1
    * nbdkit-gzip-filter-1.36.5-150400.3.9.1
    * nbdkit-ssh-plugin-1.36.5-150400.3.9.1
    * nbdkit-basic-plugins-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-basic-plugins-1.36.5-150400.3.9.1
    * nbdkit-server-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-tar-filter-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-xz-filter-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-nbd-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-curl-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-gzip-filter-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-linuxdisk-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-python-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-1.36.5-150400.3.9.1
    * nbdkit-tmpdisk-plugin-1.36.5-150400.3.9.1
    * nbdkit-basic-filters-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-debugsource-1.36.5-150400.3.9.1
    * nbdkit-curl-plugin-1.36.5-150400.3.9.1
    * nbdkit-devel-1.36.5-150400.3.9.1
    * nbdkit-tar-filter-1.36.5-150400.3.9.1
    * nbdkit-basic-filters-1.36.5-150400.3.9.1
    * nbdkit-ssh-plugin-debuginfo-1.36.5-150400.3.9.1
  * openSUSE Leap 15.6 (noarch)
    * nbdkit-bash-completion-1.36.5-150400.3.9.1
  * openSUSE Leap 15.6 (x86_64)
    * nbdkit-vddk-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-vddk-plugin-1.36.5-150400.3.9.1
  * Server Applications Module 15-SP6 (aarch64 ppc64le s390x x86_64)
    * nbdkit-debugsource-1.36.5-150400.3.9.1
    * nbdkit-curl-plugin-1.36.5-150400.3.9.1
    * nbdkit-basic-plugins-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-basic-plugins-1.36.5-150400.3.9.1
    * nbdkit-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-curl-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-nbd-plugin-1.36.5-150400.3.9.1
    * nbdkit-nbd-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-python-plugin-1.36.5-150400.3.9.1
    * nbdkit-server-1.36.5-150400.3.9.1
    * nbdkit-python-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-1.36.5-150400.3.9.1
    * nbdkit-server-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-basic-filters-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-basic-filters-1.36.5-150400.3.9.1
    * nbdkit-ssh-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-ssh-plugin-1.36.5-150400.3.9.1
  * Server Applications Module 15-SP6 (x86_64)
    * nbdkit-vddk-plugin-debuginfo-1.36.5-150400.3.9.1
    * nbdkit-vddk-plugin-1.36.5-150400.3.9.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-47711.html
  * https://www.suse.com/security/cve/CVE-2025-47712.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1243108
  * https://bugzilla.suse.com/show_bug.cgi?id=1243110