SUSE-SU-2025:4305-1: moderate: Security update for grub2

SLE-SECURITY-UPDATES null at suse.de
Fri Nov 28 18:32:39 UTC 2025 


# Security update for grub2

Announcement ID: SUSE-SU-2025:4305-1  
Release Date: 2025-11-28T13:33:44Z  
Rating: moderate  
References:

  * bsc#1245953
  * bsc#1252930
  * bsc#1252931
  * bsc#1252932
  * bsc#1252933
  * bsc#1252934
  * bsc#1252935

  
Cross-References:

  * CVE-2025-54770
  * CVE-2025-54771
  * CVE-2025-61661
  * CVE-2025-61662
  * CVE-2025-61663
  * CVE-2025-61664

  
CVSS scores:

  * CVE-2025-54770 ( SUSE ):  2.1
    CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-54770 ( SUSE ):  4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2025-54770 ( NVD ):  4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2025-54771 ( SUSE ):  2.1
    CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-54771 ( SUSE ):  4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2025-54771 ( NVD ):  4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2025-61661 ( SUSE ):  4.3
    CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-61661 ( SUSE ):  4.8 CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
  * CVE-2025-61661 ( NVD ):  4.8 CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
  * CVE-2025-61662 ( SUSE ):  2.1
    CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-61662 ( SUSE ):  4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2025-61662 ( NVD ):  4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2025-61663 ( SUSE ):  2.1
    CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-61663 ( SUSE ):  4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2025-61663 ( NVD ):  4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2025-61664 ( SUSE ):  2.1
    CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2025-61664 ( SUSE ):  4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2025-61664 ( NVD ):  4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

  
Affected Products:

  * Basesystem Module 15-SP7
  * Server Applications Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves six vulnerabilities and has one security fix can now be
installed.

## Description:

This update for grub2 fixes the following issues:

  * CVE-2025-54771: Fixed rub_file_close() does not properly controls the fs
    refcount (bsc#1252931)
  * CVE-2025-54770: Fixed missing unregister call for net_set_vlan command may
    lead to use-after-free (bsc#1252930)
  * CVE-2025-61662: Fixed missing unregister call for gettext command may lead
    to use-after-free (bsc#1252933)
  * CVE-2025-61663: Fixed missing unregister call for normal commands may lead
    to use-after-free (bsc#1252934)
  * CVE-2025-61664: Fixed missing unregister call for normal_exit command may
    lead to use-after-free (bsc#1252935)
  * CVE-2025-61661: Fixed out-of-bounds write in grub_usb_get_string() function
    (bsc#1252932)

Other fixes:

  * Bump upstream SBAT generation to 6
  * Fixed timeout when loading initrd via http after PPC CAS reboot
    (bsc#1245953)

## 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:

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2025-4305=1

  * Server Applications Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2025-4305=1

## Package List:

  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * grub2-2.12-150700.19.19.1
    * grub2-debuginfo-2.12-150700.19.19.1
  * Basesystem Module 15-SP7 (noarch)
    * grub2-snapper-plugin-2.12-150700.19.19.1
    * grub2-powerpc-ieee1275-2.12-150700.19.19.1
    * grub2-x86_64-efi-2.12-150700.19.19.1
    * grub2-arm64-efi-2.12-150700.19.19.1
    * grub2-systemd-sleep-plugin-2.12-150700.19.19.1
    * grub2-i386-pc-2.12-150700.19.19.1
  * Basesystem Module 15-SP7 (aarch64 s390x x86_64)
    * grub2-debugsource-2.12-150700.19.19.1
  * Basesystem Module 15-SP7 (s390x)
    * grub2-s390x-emu-2.12-150700.19.19.1
  * Server Applications Module 15-SP7 (noarch)
    * grub2-x86_64-xen-2.12-150700.19.19.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-54770.html
  * https://www.suse.com/security/cve/CVE-2025-54771.html
  * https://www.suse.com/security/cve/CVE-2025-61661.html
  * https://www.suse.com/security/cve/CVE-2025-61662.html
  * https://www.suse.com/security/cve/CVE-2025-61663.html
  * https://www.suse.com/security/cve/CVE-2025-61664.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1245953
  * https://bugzilla.suse.com/show_bug.cgi?id=1252930
  * https://bugzilla.suse.com/show_bug.cgi?id=1252931
  * https://bugzilla.suse.com/show_bug.cgi?id=1252932
  * https://bugzilla.suse.com/show_bug.cgi?id=1252933
  * https://bugzilla.suse.com/show_bug.cgi?id=1252934
  * https://bugzilla.suse.com/show_bug.cgi?id=1252935

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