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SUSE: grub2 Important Fixes for Seven Issues CVE-2024-56738

suse
Calendar Grey December 18, 2025
Dist Suse Esm H88
SUSE Linux updates for grub2 address seven important issues including use-after-free vulnerabilities effectively.
An update that solves seven vulnerabilities and has seven fixes can now be installed.

Summary

## This update for grub2 fixes the following issues: Changes in grub2: * CVE-2025-54771: Fixed grub_file_close() does not properly controls the fs refcount (bsc#1252931) * CVE-2025-54770: Fixed missing unregister call for net_set_vlan command may lead to use-after-free (bsc#1252930) * CVE-2025-61662: Fixed missing unregister call for gettext command may lead to use-after-free (bsc#1252933) * CVE-2025-61663: Fixed missing unregister call for normal commands may lead to use-after-free (bsc#1252934) * CVE-2025-61664: Fixed missing unregister call for normal_exit command may lead to use-after-free (bsc#1252935) * CVE-2025-61661: Fixed out-of-bounds write in grub_usb_get_string() function (bsc#1252932) * Bump upstream SBAT generation to 6

Topics%20covered

Topics Covered

security advisory security update SuSE important use-after-free grub2

References

* bsc#1234959

* bsc#1245636

* bsc#1245738

* bsc#1245953

* bsc#1246231

* bsc#1247242

* bsc#1249088

* bsc#1249385

* bsc#1252930

* bsc#1252931

* bsc#1252932

* bsc#1252933

* bsc#1252934

* bsc#1252935

Cross-

* CVE-2024-56738

* CVE-2025-54770

* CVE-2025-54771

* CVE-2025-61661

* CVE-2025-61662

* CVE-2025-61663

* CVE-2025-61664

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

* 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

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2025:21212-1
Release Date: 2025-12-15T12:52:50Z
Rating: important

Topics%20covered

Topics Covered

security advisory security update SuSE important use-after-free grub2

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