SUSE SLES16 Security Update : grub2 (SUSE-SU-2025:21212-1)

medium Nessus Plugin ID 279373

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Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES16 / SLES_SAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:21212-1 advisory.

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

- Fix sparse file not allowed error after grub2-reboot (bsc#1245738)
- Fix PowerPC network boot prefix to correctly locate grub.cfg (bsc#1249385)
- turn off page flipping for i386-pc using VBE video backend (bsc#1245636)
- Fix boot hangs in setting up serial console when ACPI SPCR table is present and redirection is disabled (bsc#1249088)
- Fix timeout when loading initrd via http after PPC CAS reboot (bsc#1245953)
- Skip mount point in grub_find_device function (bsc#1246231)

- CVE-2024-56738: Fixed side-channel attack due to not constant-time algorithm in grub_crypto_memcmp (bsc#1234959)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 279373

File Name: suse_SU-2025-21212-1.nasl

Version: 1.1

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 12/19/2025

Updated: 12/19/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Low

Base Score: 3.7

Temporal Score: 2.7

Vector: CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2025-61664

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS Score Source: CVE-2024-56738

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:grub2-arm64-efi, p-cpe:/a:novell:suse_linux:grub2-common, p-cpe:/a:novell:suse_linux:grub2-s390x-emu, p-cpe:/a:novell:suse_linux:grub2-snapper-plugin, cpe:/o:novell:suse_linux:16, p-cpe:/a:novell:suse_linux:grub2, p-cpe:/a:novell:suse_linux:grub2-systemd-sleep-plugin, p-cpe:/a:novell:suse_linux:grub2-x86_64-efi, p-cpe:/a:novell:suse_linux:grub2-i386-pc, p-cpe:/a:novell:suse_linux:grub2-powerpc-ieee1275

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 12/15/2025

Vulnerability Publication Date: 12/29/2024

Reference Information

CVE: CVE-2024-56738, CVE-2025-54770, CVE-2025-54771, CVE-2025-61661, CVE-2025-61662, CVE-2025-61663, CVE-2025-61664

SuSE: SUSE-SU-2025:21212-1

Detections

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