SUSE-SU-2026:22538-1: moderate: Security update for glibc

[SLE-UPDATES]

# Security update for glibc

Announcement ID: SUSE-SU-2026:22538-1  
Release Date: 2026-07-03T13:25:46Z  
Rating: moderate  
References:

  * bsc#1263656
  * bsc#1263658

  
Cross-References:

  * CVE-2026-5435
  * CVE-2026-6238

  
CVSS scores:

  * CVE-2026-5435 ( SUSE ):  4.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-5435 ( SUSE ):  5.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-5435 ( NVD ):  7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-6238 ( SUSE ):  4.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-6238 ( SUSE ):  5.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-6238 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

  
Affected Products:

  * SUSE Linux Micro 6.2
  * SUSE Linux Micro Extras 6.2

  
  
An update that solves two vulnerabilities can now be installed.

## Description:

This update for glibc fixes the following issues

  * CVE-2026-5435: unchecked buffer writing in TSIG handling can lead to an out-
    of-bounds write (bsc#1263656).
  * CVE-2026-6238: insufficient RDATA length validation can lead to application
    crashes or uninitialized memory disclosure (bsc#1263658).

## 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 Extras 6.2  
    zypper in -t patch SUSE-SLE-Micro-Extras-6.2-1157=1

## Package List:

  * SUSE Linux Micro Extras 6.2 (aarch64 ppc64le s390x x86_64)
    * glibc-gconv-modules-extra-2.40-160000.6.1
    * glibc-debuginfo-2.40-160000.6.1
    * glibc-gconv-modules-extra-debuginfo-2.40-160000.6.1
    * glibc-debugsource-2.40-160000.6.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-5435.html
  * https://www.suse.com/security/cve/CVE-2026-6238.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1263656
  * https://bugzilla.suse.com/show_bug.cgi?id=1263658

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