SUSE-SU-2025:20332-1: critical: Security update for glibc

[SLE-SECURITY-UPDATES]

# Security update for glibc

Announcement ID: SUSE-SU-2025:20332-1  
Release Date: May 21, 2025, 11:06 a.m.  
Rating: critical  
References:

  * bsc#1234128
  * bsc#1239883
  * bsc#1243317

  
Cross-References:

  * CVE-2025-4802

  
CVSS scores:

  * CVE-2025-4802 ( SUSE ):  9.4
    CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
  * CVE-2025-4802 ( SUSE ):  8.4 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2025-4802 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

  
Affected Products:

  * SUSE Linux Micro 6.0

  
  
An update that solves one vulnerability and has two fixes can now be installed.

## Description:

This update for glibc fixes the following issues:

  * CVE-2025-4802: Fixed local root exploits when using static built setuid root
    applications. (elf: Ignore LD_LIBRARY_PATH and debug env var for setuid for
    static) (bsc#1243317)
  * pthreads NPTL: lost wakeup fix 2 (bsc#1234128, BZ #25847)
  * Mark functions in libc_nonshared.a as hidden (bsc#1239883)

## 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-6.0-328=1

## Package List:

  * SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    * glibc-locale-2.38-9.1
    * glibc-2.38-9.1
    * glibc-locale-base-debuginfo-2.38-9.1
    * glibc-locale-base-2.38-9.1
    * glibc-devel-debuginfo-2.38-9.1
    * glibc-debugsource-2.38-9.1
    * glibc-devel-2.38-9.1
    * glibc-debuginfo-2.38-9.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-4802.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1234128
  * https://bugzilla.suse.com/show_bug.cgi?id=1239883
  * https://bugzilla.suse.com/show_bug.cgi?id=1243317

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