Security update for grub2

Announcement ID:	SUSE-SU-2025:4143-1
Release Date:	2025-11-20T07:54:04Z
Rating:	moderate
References:	bsc#1252931 bsc#1252932 bsc#1252933 bsc#1252934 bsc#1252935
Cross-References:	CVE-2025-54771 CVE-2025-61661 CVE-2025-61662 CVE-2025-61663 CVE-2025-61664
CVSS scores:	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:	openSUSE Leap 15.3 SUSE Linux Enterprise Micro 5.2 SUSE Linux Enterprise Micro for Rancher 5.2

An update that solves five vulnerabilities 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-2025-61661: 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

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 15.3
  zypper in -t patch SUSE-2025-4143=1
• SUSE Linux Enterprise Micro 5.2
  zypper in -t patch SUSE-SUSE-MicroOS-5.2-2025-4143=1
• SUSE Linux Enterprise Micro for Rancher 5.2
  zypper in -t patch SUSE-SUSE-MicroOS-5.2-2025-4143=1

Package List:

• openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64 i586)
  • grub2-2.04-150300.22.61.1
  • grub2-branding-upstream-2.04-150300.22.61.1
  • grub2-debuginfo-2.04-150300.22.61.1
• openSUSE Leap 15.3 (aarch64 s390x x86_64 i586)
  • grub2-debugsource-2.04-150300.22.61.1
• openSUSE Leap 15.3 (noarch)
  • grub2-systemd-sleep-plugin-2.04-150300.22.61.1
  • grub2-i386-xen-2.04-150300.22.61.1
  • grub2-powerpc-ieee1275-debug-2.04-150300.22.61.1
  • grub2-i386-pc-2.04-150300.22.61.1
  • grub2-snapper-plugin-2.04-150300.22.61.1
  • grub2-x86_64-efi-debug-2.04-150300.22.61.1
  • grub2-i386-efi-debug-2.04-150300.22.61.1
  • grub2-i386-pc-extras-2.04-150300.22.61.1
  • grub2-i386-efi-extras-2.04-150300.22.61.1
  • grub2-powerpc-ieee1275-2.04-150300.22.61.1
  • grub2-s390x-emu-extras-2.04-150300.22.61.1
  • grub2-i386-efi-2.04-150300.22.61.1
  • grub2-x86_64-efi-2.04-150300.22.61.1
  • grub2-powerpc-ieee1275-extras-2.04-150300.22.61.1
  • grub2-x86_64-xen-extras-2.04-150300.22.61.1
  • grub2-x86_64-xen-2.04-150300.22.61.1
  • grub2-arm64-efi-debug-2.04-150300.22.61.1
  • grub2-x86_64-efi-extras-2.04-150300.22.61.1
  • grub2-arm64-efi-2.04-150300.22.61.1
  • grub2-i386-xen-extras-2.04-150300.22.61.1
  • grub2-arm64-efi-extras-2.04-150300.22.61.1
  • grub2-i386-pc-debug-2.04-150300.22.61.1
• openSUSE Leap 15.3 (s390x)
  • grub2-s390x-emu-debug-2.04-150300.22.61.1
  • grub2-s390x-emu-2.04-150300.22.61.1
• SUSE Linux Enterprise Micro 5.2 (aarch64 s390x x86_64)
  • grub2-2.04-150300.22.61.1
  • grub2-debuginfo-2.04-150300.22.61.1
  • grub2-debugsource-2.04-150300.22.61.1
• SUSE Linux Enterprise Micro 5.2 (noarch)
  • grub2-x86_64-efi-2.04-150300.22.61.1
  • grub2-arm64-efi-2.04-150300.22.61.1
  • grub2-x86_64-xen-2.04-150300.22.61.1
  • grub2-i386-pc-2.04-150300.22.61.1
  • grub2-snapper-plugin-2.04-150300.22.61.1
• SUSE Linux Enterprise Micro 5.2 (s390x)
  • grub2-s390x-emu-2.04-150300.22.61.1
• SUSE Linux Enterprise Micro for Rancher 5.2 (aarch64 s390x x86_64)
  • grub2-2.04-150300.22.61.1
  • grub2-debuginfo-2.04-150300.22.61.1
  • grub2-debugsource-2.04-150300.22.61.1
• SUSE Linux Enterprise Micro for Rancher 5.2 (noarch)
  • grub2-x86_64-efi-2.04-150300.22.61.1
  • grub2-arm64-efi-2.04-150300.22.61.1
  • grub2-x86_64-xen-2.04-150300.22.61.1
  • grub2-i386-pc-2.04-150300.22.61.1
  • grub2-snapper-plugin-2.04-150300.22.61.1
• SUSE Linux Enterprise Micro for Rancher 5.2 (s390x)
  • grub2-s390x-emu-2.04-150300.22.61.1

References:

• 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=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