openSUSE 15.3: grub2 Moderate Side-Channel Risk CVE-2024-56738 Details
opensuse
August 5, 2025
An update that solves one vulnerability 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)
Topics Covered
Patch
## 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-2025-2705=1
* SUSE Linux Enterprise Micro 5.2
zypper in -t patch SUSE-SUSE-MicroOS-5.2-2025-2705=1
* SUSE Linux Enterprise Micro for Rancher 5.2
zypper in -t patch SUSE-SUSE-MicroOS-5.2-2025-2705=1
Package List
* openSUSE Leap 15.3 (aarch64 ppc64le s390x x86_64 i586)
* grub2-2.04-150300.22.58.1
* grub2-debuginfo-2.04-150300.22.58.1
* grub2-branding-upstream-2.04-150300.22.58.1
* openSUSE Leap 15.3 (aarch64 s390x x86_64 i586)
* grub2-debugsource-2.04-150300.22.58.1
* openSUSE Leap 15.3 (noarch)
* grub2-i386-pc-2.04-150300.22.58.1
* grub2-snapper-plugin-2.04-150300.22.58.1
* grub2-powerpc-ieee1275-debug-2.04-150300.22.58.1
* grub2-i386-pc-debug-2.04-150300.22.58.1
* grub2-arm64-efi-extras-2.04-150300.22.58.1
* grub2-x86_64-xen-extras-2.04-150300.22.58.1
* grub2-i386-xen-2.04-150300.22.58.1
* grub2-i386-efi-debug-2.04-150300.22.58.1
* grub2-s390x-emu-extras-2.04-150300.22.58.1
* grub2-i386-efi-2.04-150300.22.58.1
* grub2-x86_64-xen-2.04-150300.22.58.1
* grub2-powerpc-ieee1275-extras-2.04-150300.22.58.1
* grub2-x86_64-efi-2.04-150300.22.58.1
* grub2-i386-efi-extras-2.04-150300.22.58.1
* grub2-arm64-efi-2.04-150300.22.58.1
* grub2-systemd-sleep-plugin-2.04-150300.22.58.1
* grub2-arm64-efi-debug-2.04-150300.22.58.1
*...
Read the Full AdvisoryReferences
* bsc#1234959
## References:
* https://www.suse.com/security/cve/CVE-2024-56738.html
* https://bugzilla.suse.com/show_bug.cgi?id=1234959
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Announcement ID: SUSE-SU-2025:02705-1
Release Date: 2025-08-05T10:08:15Z
Affected Products:
* openSUSE Leap 15.3
* SUSE Linux Enterprise Micro 5.2
* SUSE Linux Enterprise Micro for Rancher 5.2
Topics Covered
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