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SUSE: 2025:21062-1 grub2 Moderate Use-After-Free Issues

suse
Calendar Grey November 27, 2025
Dist Suse Esm H88
SUSE update for grub2 addresses multiple issues including use-after-free vulnerabilities, enhancing system security.
* bsc#1252930 * bsc#1252931 * bsc#1252932 * bsc#1252933 * bsc#1252934

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) ## Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

Topics%20covered

Topics Covered

security advisory moderate buffer overflow SuSE use-after-free grub2

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

Announcement ID: SUSE-SU-2025:21062-1
Release Date: 2025-11-21T13:08:21Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate buffer overflow SuSE use-after-free grub2

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