SUSE alert SUSE-SU-2025:20654-1 (grub2)

From:
             
 
SLE-SECURITY-UPDATES <null@suse.de>
To:
             
 
sle-security-updates@lists.suse.com
Subject:
             
 
SUSE-SU-2025:20654-1: moderate: Security update for grub2
Date:
             
 
Wed, 10 Sep 2025 12:30:47 -0000
Message-ID:
             
 
<175750744726.29615.15043065128011092999@smelt2.prg2.suse.org>


# Security update for grub2

Announcement ID: SUSE-SU-2025:20654-1  
Release Date: 2025-09-05T12:55:50Z  
Rating: moderate  
References:

  * bsc#1234959

  
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:

  * SUSE Linux Micro 6.0

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for grub2 fixes the following issues:

  * CVE-2024-56738: Side-channel attack due to not constant-timealgorithm in
    grub_crypto_memcmp (bsc#1234959).

## 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-6.0-445=1

## Package List:

  * SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    * grub2-2.12~rc1-7.1
    * grub2-debugsource-2.12~rc1-7.1
    * grub2-debuginfo-2.12~rc1-7.1
  * SUSE Linux Micro 6.0 (noarch)
    * grub2-x86_64-efi-2.12~rc1-7.1
    * grub2-i386-pc-2.12~rc1-7.1
    * grub2-arm64-efi-2.12~rc1-7.1
    * grub2-snapper-plugin-2.12~rc1-7.1
    * grub2-x86_64-xen-2.12~rc1-7.1
  * SUSE Linux Micro 6.0 (s390x)
    * grub2-s390x-emu-2.12~rc1-7.1

## References:

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



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