SUSE-SU-2026:23507-1: critical: Security update for libzypp, zypper

[SLE-SECURITY-UPDATES]

# Security update for libzypp, zypper

Announcement ID: SUSE-SU-2026:23507-1  
Release Date: 2026-09-08T15:22:38Z  
Rating: critical  
References:

  * bsc#1257249
  * bsc#1271730
  * bsc#1272534
  * bsc#1273242
  * bsc#1274091
  * bsc#1274625
  * bsc#1277790

  
Affected Products:

  * SUSE Linux Micro 6.2

  
  
An update that has seven fixes can now be installed.

## Description:

This update for libzypp, zypper fixes the following issues:

Security issue fixed:

  * invalidating legacy libzypp unsigned-repository cache state [LIBZYPP-LEGACY-
    CACHE-01] (bsc#1274625).

Non security issues fixed:

  * Econf parser adds tags in drop-in files outside any section to [main]
    (bsc#1272534).
  * Need zypper option to disable services to fix Dockerfile builds in OBS
    (bsc#1257249).
  * zypper loads repository data and installed packages prior to checking for
    required arguments (bsc#1274091).
  * Zypper patch doesn't give enough details about conflicts (bsc#1277790).

Changes for libzypp:

Update to version 17.38.1:

  * Prevent libgpgme from launching gpg-agents; we don't need them.
  * defaultLoadSystem: Hand out the ZYpp::Ptr as return value.
  * Log all solver problem rules (bsc#1277790) The log contains the most
    relevant problem rule, but sometimes it helps to know all rules associated
    with this problem. zypper shows them on demand as 'detail'. The log now
    remembers them as well.
  * Replace popen cat/zcat with solv_xfopen for testcase loaders (fixes #749)
  * repoGpgCheck: Strictly follow the repo_gpgcheck setting (bsc#1274625)
    There's been a legacy exception for unsigned repositories which were
    explicitly accepted in the past. After switching the repo_gpgcheck from off
    to on, they were allowed to stay unsigned until a first signed version was
    retrieved. From there on the handling was strict. Now the handling is strict
    as soon as the repo_gpgcheck turned on. The next set of metadata retrieved
    must be signed.
  * Iniparser: each new file starts in the unnamed section (bsc#1272534)
  * Fix hasCredentials() to require both username AND password to be non-empty
    (bsc#1273242) This avoids an unnecessary 2nd 401 response sending just the
    username in case the username but no password is known. Now it immediately
    fetches the credentials from disk if no password is known.
  * GPG Key hints in repoindex.xml require at least a long id to allow auto-
    import (bsc#1271730) The short Id (32bit/8byte) is not considered to be a
    safe identifier for a gpg key. A long id (64bit/16byte) or even better the
    full fingerprint is needed to identify the key.
  * zypp: Improve Testcase Loading for MCP Tools.

Changes for zypper:

Update to version 1.14.99:

  * Show solver problem details per default in not-interactive mode
    (bsc#1277790) This way they see all details when capturing zypper's output
    because the (d)etail button can't be pressed in not-interactive mode.
  * Add --servicesd-dir global option to relocate /etc/zypp/services.d
    (bsc#1257249)
  * info: check for missing positional args before systemSetup (bsc#1274091)
  * Remove deprecated installRecommends option from zypper.conf. The system wide
    default for all libzypp based applications is defined in zypp.conf(5). It is
    not recommended to define this in zypper exclusively.

## Special Instructions and Notes:

## 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:

  * SUSE Linux Micro 6.2  
    zypper in -t patch SUSE-SL-Micro-6.2-1639=1

## Package List:

  * SUSE Linux Micro 6.2 (aarch64 ppc64le s390x x86_64)
    * libzypp-17.38.15-160000.1.1
    * libzypp-debuginfo-17.38.15-160000.1.1
    * libzypp-debugsource-17.38.15-160000.1.1
    * zypper-debuginfo-1.14.101-160000.1.1
    * zypper-debugsource-1.14.101-160000.1.1
    * zypper-1.14.101-160000.1.1
  * SUSE Linux Micro 6.2 (noarch)
    * zypper-needs-restarting-1.14.101-160000.1.1

## References:

  * https://bugzilla.suse.com/show_bug.cgi?id=1257249
  * https://bugzilla.suse.com/show_bug.cgi?id=1271730
  * https://bugzilla.suse.com/show_bug.cgi?id=1272534
  * https://bugzilla.suse.com/show_bug.cgi?id=1273242
  * https://bugzilla.suse.com/show_bug.cgi?id=1274091
  * https://bugzilla.suse.com/show_bug.cgi?id=1274625
  * https://bugzilla.suse.com/show_bug.cgi?id=1277790

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.suse.com/pipermail/sle-security-updates/attachments/20260910/c0e673e5/attachment-0001.htm>