SUSE-SU-2026:20527-1: important: Security update for glibc

[SLE-SECURITY-UPDATES]

# Security update for glibc

Announcement ID: SUSE-SU-2026:20527-1  
Release Date: 2026-02-26T11:23:28Z  
Rating: important  
References:

  * bsc#1246965
  * bsc#1256766
  * bsc#1256822
  * bsc#1257005

  
Cross-References:

  * CVE-2025-15281
  * CVE-2025-8058
  * CVE-2026-0861
  * CVE-2026-0915

  
CVSS scores:

  * CVE-2025-15281 ( SUSE ):  6.8
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-15281 ( SUSE ):  5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-15281 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-8058 ( SUSE ):  5.9
    CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:H/SC:L/SI:L/SA:H
  * CVE-2025-8058 ( SUSE ):  6.6 CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:H
  * CVE-2025-8058 ( NVD ):  5.9
    CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:P/VC:L/VI:L/VA:H/SC:L/SI:L/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-0861 ( SUSE ):  8.5
    CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-0861 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-0861 ( NVD ):  8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-0915 ( SUSE ):  6.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-0915 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-0915 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

  
Affected Products:

  * SUSE Linux Micro 6.0

  
  
An update that solves four vulnerabilities can now be installed.

## Description:

This update for glibc fixes the following issues:

  * CVE-2026-0861: inadequate size check in the memalign suite may result in an
    integer overflow (bsc#1256766).
  * CVE-2026-0915: uninitialized stack buffer used as DNS query name when net==0
    in _nss_dns_getnetbyaddr_r (bsc#1256822).
  * CVE-2025-15281: uninitialized memory may cause the process abort
    (bsc#1257005).
  * CVE-2025-8058: a malloc failure in regcomp function can lead to a double
    free (bsc#1246965).

## 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-6.0-597=1

## Package List:

  * SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    * glibc-devel-debuginfo-2.38-11.1
    * glibc-locale-base-2.38-11.1
    * glibc-devel-2.38-11.1
    * glibc-debuginfo-2.38-11.1
    * glibc-locale-2.38-11.1
    * glibc-2.38-11.1
    * glibc-locale-base-debuginfo-2.38-11.1
    * glibc-debugsource-2.38-11.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-15281.html
  * https://www.suse.com/security/cve/CVE-2025-8058.html
  * https://www.suse.com/security/cve/CVE-2026-0861.html
  * https://www.suse.com/security/cve/CVE-2026-0915.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1246965
  * https://bugzilla.suse.com/show_bug.cgi?id=1256766
  * https://bugzilla.suse.com/show_bug.cgi?id=1256822
  * https://bugzilla.suse.com/show_bug.cgi?id=1257005

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