SUSE Linux Micro 6.0 Grub2 Moderate Security Update 2026-21621-1
suse
May 15, 2026
An update that solves six vulnerabilities can now be installed.
Summary
## This update for grub2 fixes the following issues * CVE-2025-54770: Missing unregister call for net_set_vlan command may lead to use-after-free (bsc#1252930). * CVE-2025-54771: grub_file_close() does not properly controls the fs refcount (bsc#1252931). * CVE-2025-61661: Out-of-bounds write in grub_usb_get_string() function (bsc#1252932). * CVE-2025-61662: Missing unregister call for gettext command may lead to use- after-free (bsc#1252933). * CVE-2025-61663: Missing unregister call for normal commands may lead to use- after-free (bsc#1252934). * CVE-2025-61664: Missing unregister call for normal_exit command may lead to use-after-free (bsc#1252935). Changes for grub2: * Bump upstream SBAT generation to 6 ## Patch Instructions:
Topics Covered
References
* bsc#1252930
* bsc#1252931
* bsc#1252932
* bsc#1252933
* bsc#1252934
* bsc#1252935
Cross-
* CVE-2025-54770
* CVE-2025-54771
* CVE-2025-61661
* CVE-2025-61662
* CVE-2025-61663
* CVE-2025-61664
CVSS scores:
* CVE-2025-54770 ( 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-2025-54770 ( SUSE ): 4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
* CVE-2025-54770 ( NVD ): 4.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
* 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
PREVIOUS
NEXT
Severity
critical
Lowest
Low
Medium
High
Critical
Announcement ID: SUSE-SU-2026:21621-1
Release Date: 2026-05-11T08:46:20Z
Rating: moderate
Topics Covered
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Related News
Powered By
Linux Security - Your source for Top Linux News, Advisories, HOWTOs and Feature Releases
QUICK LINKS
subscribe to newsletters!
Like staying secure? So do we.
Sign up for updates, tips, and alerts!