SUSE-SU-2025:02772-1: moderate: Recommended update for grub2

[SLE-SECURITY-UPDATES]

# Recommended update for grub2

Announcement ID: SUSE-SU-2025:02772-1  
Release Date: 2025-08-12T17:39:25Z  
Rating: moderate  
References:

  * bsc#1234959
  * bsc#1246157
  * bsc#1246231
  * bsc#1246237

  
Cross-References:

  * CVE-2024-56738

  
CVSS scores:

  * CVE-2024-56738 ( SUSE ):  5.7
    CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2024-56738 ( SUSE ):  4.7 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
  * CVE-2024-56738 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

  
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 one vulnerability and has three security fixes can now be
installed.

## Description:

This update for grub2 fixes the following issues:

  * CVE-2024-56738: Fixed side-channel attack due to not constant-time algorithm
    in grub_crypto_memcmp (bsc#1234959)

Other fixes: \- Fix test -f and -s do not work properly over the network files
served via tftp and http (bsc#1246157, bsc#1246237) \- Skip mount point in
grub_find_device function (bsc#1246231)

## 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-2025-2772=1 openSUSE-SLE-15.6-2025-2772=1

  * Basesystem Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP6-2025-2772=1

  * Server Applications Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP6-2025-2772=1

## Package List:

  * openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)
    * grub2-debuginfo-2.12-150600.8.34.1
    * grub2-2.12-150600.8.34.1
    * grub2-branding-upstream-2.12-150600.8.34.1
  * openSUSE Leap 15.6 (aarch64 s390x x86_64 i586)
    * grub2-debugsource-2.12-150600.8.34.1
  * openSUSE Leap 15.6 (noarch)
    * grub2-i386-pc-2.12-150600.8.34.1
    * grub2-x86_64-xen-debug-2.12-150600.8.34.1
    * grub2-snapper-plugin-2.12-150600.8.34.1
    * grub2-i386-xen-debug-2.12-150600.8.34.1
    * grub2-s390x-emu-extras-2.12-150600.8.34.1
    * grub2-x86_64-xen-extras-2.12-150600.8.34.1
    * grub2-arm64-efi-debug-2.12-150600.8.34.1
    * grub2-x86_64-efi-extras-2.12-150600.8.34.1
    * grub2-x86_64-xen-2.12-150600.8.34.1
    * grub2-x86_64-efi-debug-2.12-150600.8.34.1
    * grub2-i386-pc-debug-2.12-150600.8.34.1
    * grub2-i386-xen-2.12-150600.8.34.1
    * grub2-i386-xen-extras-2.12-150600.8.34.1
    * grub2-i386-efi-extras-2.12-150600.8.34.1
    * grub2-powerpc-ieee1275-extras-2.12-150600.8.34.1
    * grub2-systemd-sleep-plugin-2.12-150600.8.34.1
    * grub2-i386-efi-debug-2.12-150600.8.34.1
    * grub2-arm64-efi-extras-2.12-150600.8.34.1
    * grub2-powerpc-ieee1275-2.12-150600.8.34.1
    * grub2-powerpc-ieee1275-debug-2.12-150600.8.34.1
    * grub2-arm64-efi-2.12-150600.8.34.1
    * grub2-i386-efi-2.12-150600.8.34.1
    * grub2-i386-pc-extras-2.12-150600.8.34.1
    * grub2-x86_64-efi-2.12-150600.8.34.1
  * openSUSE Leap 15.6 (s390x)
    * grub2-s390x-emu-debug-2.12-150600.8.34.1
    * grub2-s390x-emu-2.12-150600.8.34.1
  * Basesystem Module 15-SP6 (aarch64 ppc64le s390x x86_64)
    * grub2-debuginfo-2.12-150600.8.34.1
    * grub2-2.12-150600.8.34.1
  * Basesystem Module 15-SP6 (noarch)
    * grub2-i386-pc-2.12-150600.8.34.1
    * grub2-systemd-sleep-plugin-2.12-150600.8.34.1
    * grub2-powerpc-ieee1275-2.12-150600.8.34.1
    * grub2-arm64-efi-2.12-150600.8.34.1
    * grub2-snapper-plugin-2.12-150600.8.34.1
    * grub2-x86_64-efi-2.12-150600.8.34.1
  * Basesystem Module 15-SP6 (aarch64 s390x x86_64)
    * grub2-debugsource-2.12-150600.8.34.1
  * Basesystem Module 15-SP6 (s390x)
    * grub2-s390x-emu-2.12-150600.8.34.1
  * Server Applications Module 15-SP6 (noarch)
    * grub2-x86_64-xen-2.12-150600.8.34.1

## References:

  * https://www.suse.com/security/cve/CVE-2024-56738.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1234959
  * https://bugzilla.suse.com/show_bug.cgi?id=1246157
  * https://bugzilla.suse.com/show_bug.cgi?id=1246231
  * https://bugzilla.suse.com/show_bug.cgi?id=1246237

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