SUSE-SU-2026:20708-1: moderate: Security update for gnutls

[SLE-SECURITY-UPDATES]

# Security update for gnutls

Announcement ID: SUSE-SU-2026:20708-1  
Release Date: 2026-03-06T12:16:00Z  
Rating: moderate  
References:

  * bsc#1257960
  * bsc#1258083
  * jsc#PED-15752
  * jsc#PED-15753

  
Cross-References:

  * CVE-2025-14831

  
CVSS scores:

  * CVE-2025-14831 ( SUSE ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-14831 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2025-14831 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

  
Affected Products:

  * SUSE Linux Micro 6.0

  
  
An update that solves one vulnerability, contains two features and has one fix
can now be installed.

## Description:

This update for gnutls fixes the following issues:

Add the functionality to allow to specify the hash algorithm for the PSK. This
fixes a bug in the current implementation where the binder is always calculated
with SHA256.

  * (bsc#1258083, jsc#PED-15752, jsc#PED-15753)
  * lib/psk: Add gnutls_psk_allocate_{client,server}_credentials2
  * tests/psk-file: Add testing for _credentials2 functions
  * lib/psk: add null check for binder algo
  * pre_shared_key: fix memleak when retrying with different binder algo
  * pre_shared_key: add null check on pskcred

Security fix:

  * CVE-2025-14831: DoS via excessive resource consumption during certificate
    verification (bsc#1257960)

## 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 6.0  
    zypper in -t patch SUSE-SLE-Micro-6.0-609=1

## Package List:

  * SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    * gnutls-debuginfo-3.8.3-6.1
    * gnutls-3.8.3-6.1
    * libgnutls30-debuginfo-3.8.3-6.1
    * libgnutls30-3.8.3-6.1
    * gnutls-debugsource-3.8.3-6.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-14831.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1257960
  * https://bugzilla.suse.com/show_bug.cgi?id=1258083
  * https://jira.suse.com/browse/PED-15752
  * https://jira.suse.com/browse/PED-15753

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