SUSE-CU-2026:6944-1: Security update of suse/ltss/sle15.5/sle15

[sle-container-updates at lists.suse.com]

SUSE Container Update Advisory: suse/ltss/sle15.5/sle15
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Container Advisory ID : SUSE-CU-2026:6944-1
Container Tags        : suse/ltss/sle15.5/bci-base:15.5 , suse/ltss/sle15.5/bci-base:15.5-8.48 , suse/ltss/sle15.5/sle15:15.5 , suse/ltss/sle15.5/sle15:15.5-8.48 , suse/ltss/sle15.5/sle15:latest
Container Release     : 8.48
Severity              : important
Type                  : security
References            : 1241219 1263366 1263367 1268131 CVE-2025-3576 CVE-2026-11850
                        CVE-2026-40355 CVE-2026-40356 
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The container suse/ltss/sle15.5/sle15 was updated. The following patches have been included in this update:

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Advisory ID: SUSE-RU-2025:2723-1
Released:    Thu Aug  7 09:36:30 2025
Summary:     Recommended update for SSSD
Type:        recommended
Severity:    moderate
References:  
This update for fixes the following issues:

- Added additional SSSD packages and dependencies to SUSE Linux Enterprise 
  Micro 5.5 (no source changes) (jsc#PED-12639)
  - krb5-client
  - python3-sssd-config
  - sssd-dbus
  - sssd-tools
  - realmd
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Advisory ID: SUSE-SU-2025:3270-1
Released:    Thu Sep 18 13:18:05 2025
Summary:     Security update for krb5
Type:        security
Severity:    moderate
References:  1241219,CVE-2025-3576
This update for krb5 fixes the following issues:

- CVE-2025-3576: weakness in the MD5 checksum design allows for spoofing of GSSAPI-protected messages that are using
  RC4-HMAC-MD5 (bsc#1241219).

Krb5 as very old protocol supported quite a number of ciphers
that are not longer up to current cryptographic standards.

To avoid problems with those, SUSE has by default now disabled
those alorithms.

The following algorithms have been removed from valid krb5 enctypes:

- des3-cbc-sha1
- arcfour-hmac-md5

To reenable those algorithms, you can use allow options in krb5.conf:

[libdefaults]
allow_des3 = true
allow_rc4 = true

to reenable them.


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Advisory ID: SUSE-SU-2026:1816-1
Released:    Tue May 12 09:56:32 2026
Summary:     Security update for krb5
Type:        security
Severity:    moderate
References:  1263366,1263367,CVE-2026-40355,CVE-2026-40356
This update for krb5 fixes the following issues

- CVE-2026-40355: Denial of Service via NULL pointer dereference in NegoEx mechanism (bsc#1263366).
- CVE-2026-40356: Denial of Service via integer underflow and out-of-bounds read (bsc#1263367).

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Advisory ID: SUSE-SU-2026:2847-1
Released:    Fri Jul 10 13:38:22 2026
Summary:     Security update for krb5
Type:        security
Severity:    important
References:  1268131,CVE-2026-11850
This update for krb5 fixes the following issue

- CVE-2026-11850: integer underflow in berval2tl_data() leads to heap out-of-bounds read (bsc#1268131).


The following package changes have been done:

- krb5-1.20.1-150500.3.23.1 updated