SUSE-SU-2026:21682-1: important: Security update for glibc

[SLE-SECURITY-UPDATES]

# Security update for glibc

Announcement ID: SUSE-SU-2026:21682-1  
Release Date: 2026-05-15T11:10:41Z  
Rating: important  
References:

  * bsc#1261206
  * bsc#1262464
  * bsc#1262465

  
Cross-References:

  * CVE-2026-4046
  * CVE-2026-5450
  * CVE-2026-5928

  
CVSS scores:

  * CVE-2026-4046 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-4046 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-4046 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-5450 ( SUSE ):  5.1
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-5450 ( SUSE ):  5.9 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-5450 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-5928 ( SUSE ):  5.9
    CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-5928 ( SUSE ):  5.7 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-5928 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * SUSE Linux Micro 6.0

  
  
An update that solves three vulnerabilities can now be installed.

## Description:

This update for glibc fixes the following issues

  * CVE-2026-4046: assertion failure when converting inputs may be used to
    remotely crash an application (bsc#1261206).
  * CVE-2026-5450: stdio-common: scanf %mc pattern will cause heap overflow when
    width > 1024 (bsc#1262465).
  * CVE-2026-5928: libio: ungetwc could be used to leak data on special
    conditions (bsc#1262464).

## 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-6.0-710=1

## Package List:

  * SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    * glibc-locale-2.38-13.1
    * glibc-locale-base-2.38-13.1
    * glibc-devel-debuginfo-2.38-13.1
    * glibc-devel-2.38-13.1
    * glibc-debugsource-2.38-13.1
    * glibc-locale-base-debuginfo-2.38-13.1
    * glibc-debuginfo-2.38-13.1
    * glibc-2.38-13.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-4046.html
  * https://www.suse.com/security/cve/CVE-2026-5450.html
  * https://www.suse.com/security/cve/CVE-2026-5928.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1261206
  * https://bugzilla.suse.com/show_bug.cgi?id=1262464
  * https://bugzilla.suse.com/show_bug.cgi?id=1262465

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