SUSE: grub2 Moderate Side-Channel Attack CVE-2024-56738 Advisory
suse
September 10, 2025
* bsc#1234959 Cross-References: * CVE-2024-56738
Summary
## 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
Topics Covered
References
* bsc#1234959
Cross-
* 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.
##
* 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-2025:20654-1
Release Date: 2025-09-05T12:55:50Z
Rating: moderate
Topics Covered
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