SUSE-SU-2025:4196-1: moderate: Security update for grub2

SLE-SECURITY-UPDATES null at suse.de
Mon Nov 24 12:32:42 UTC 2025 


# Security update for grub2

Announcement ID: SUSE-SU-2025:4196-1  
Release Date: 2025-11-24T10:54:35Z  
Rating: moderate  
References:

  * bsc#1236744
  * bsc#1241132
  * bsc#1245953
  * bsc#1252269
  * 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-SP6
  * openSUSE Leap 15.6
  * Server Applications Module 15-SP6
  * SUSE Linux Enterprise Desktop 15 SP6
  * SUSE Linux Enterprise Real Time 15 SP6
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6

  
  
An update that solves six vulnerabilities and has four security fixes can now be
installed.

## Description:

This update for grub2 fixes the following issues:

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

Other fixes:

  * Bump upstream SBAT generation to 6
  * Fix timeout when loading initrd via http after PPC CAS reboot (bsc#1245953)
  * Fix PPC CAS reboot failure work when initiated via submenu (bsc#1241132)
  * Fix out of memory issue on PowerPC by increasing RMA size (bsc#1236744,
    bsc#1252269)

## 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:

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2025-4196=1 openSUSE-SLE-15.6-2025-4196=1

  * Basesystem Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP6-2025-4196=1

  * Server Applications Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP6-2025-4196=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)
    * grub2-2.12-150600.8.44.2
    * grub2-debuginfo-2.12-150600.8.44.2
    * grub2-branding-upstream-2.12-150600.8.44.2
  * openSUSE Leap 15.6 (aarch64 s390x x86_64 i586)
    * grub2-debugsource-2.12-150600.8.44.2
  * openSUSE Leap 15.6 (noarch)
    * grub2-i386-xen-2.12-150600.8.44.2
    * grub2-arm64-efi-extras-2.12-150600.8.44.2
    * grub2-snapper-plugin-2.12-150600.8.44.2
    * grub2-i386-pc-debug-2.12-150600.8.44.2
    * grub2-i386-efi-2.12-150600.8.44.2
    * grub2-systemd-sleep-plugin-2.12-150600.8.44.2
    * grub2-x86_64-xen-debug-2.12-150600.8.44.2
    * grub2-x86_64-xen-2.12-150600.8.44.2
    * grub2-powerpc-ieee1275-extras-2.12-150600.8.44.2
    * grub2-x86_64-efi-2.12-150600.8.44.2
    * grub2-i386-efi-debug-2.12-150600.8.44.2
    * grub2-i386-pc-extras-2.12-150600.8.44.2
    * grub2-powerpc-ieee1275-2.12-150600.8.44.2
    * grub2-x86_64-efi-debug-2.12-150600.8.44.2
    * grub2-i386-pc-2.12-150600.8.44.2
    * grub2-x86_64-xen-extras-2.12-150600.8.44.2
    * grub2-i386-xen-debug-2.12-150600.8.44.2
    * grub2-x86_64-efi-extras-2.12-150600.8.44.2
    * grub2-powerpc-ieee1275-debug-2.12-150600.8.44.2
    * grub2-i386-xen-extras-2.12-150600.8.44.2
    * grub2-s390x-emu-extras-2.12-150600.8.44.2
    * grub2-arm64-efi-2.12-150600.8.44.2
    * grub2-arm64-efi-debug-2.12-150600.8.44.2
    * grub2-i386-efi-extras-2.12-150600.8.44.2
  * openSUSE Leap 15.6 (s390x)
    * grub2-s390x-emu-debug-2.12-150600.8.44.2
    * grub2-s390x-emu-2.12-150600.8.44.2
  * Basesystem Module 15-SP6 (aarch64 ppc64le s390x x86_64)
    * grub2-2.12-150600.8.44.2
    * grub2-debuginfo-2.12-150600.8.44.2
  * Basesystem Module 15-SP6 (noarch)
    * grub2-i386-pc-2.12-150600.8.44.2
    * grub2-systemd-sleep-plugin-2.12-150600.8.44.2
    * grub2-arm64-efi-2.12-150600.8.44.2
    * grub2-snapper-plugin-2.12-150600.8.44.2
    * grub2-x86_64-efi-2.12-150600.8.44.2
    * grub2-powerpc-ieee1275-2.12-150600.8.44.2
  * Basesystem Module 15-SP6 (aarch64 s390x x86_64)
    * grub2-debugsource-2.12-150600.8.44.2
  * Basesystem Module 15-SP6 (s390x)
    * grub2-s390x-emu-2.12-150600.8.44.2
  * Server Applications Module 15-SP6 (noarch)
    * grub2-x86_64-xen-2.12-150600.8.44.2

## 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=1236744
  * https://bugzilla.suse.com/show_bug.cgi?id=1241132
  * https://bugzilla.suse.com/show_bug.cgi?id=1245953
  * https://bugzilla.suse.com/show_bug.cgi?id=1252269
  * 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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