# OPENSUSE-SU-2025:20163-1: grub2 security update

OPENSUSE-SU-2025:20163-1, released December 15, 2025, fixes 7 CVEs in grub2 (version 2.12-160000.3.1). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/opensuse-su-2025-20163-1
- Platform: Linux
- Released: Dec 15, 2025
- Priority: High (Closes CVE-2025-61662, high severity)
- CVEs: 7, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://osv.dev/vulnerability/openSUSE-SU-2025:20163-1

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [grub2](https://patchblox.com/security/data/product/linux/grub2.md) | opensuse-leap 16.0 | 2.12-160000.3.1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-61662](https://patchblox.com/security/data/cve/CVE-2025-61662.md) | High | Grub2: missing unregister call for gettext command may lead to use-after-free | 7.8 | 0.0022 |  |
| [CVE-2024-56738](https://patchblox.com/security/data/cve/CVE-2024-56738.md) | Routine | GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks. | 6.7 | 0.0041 |  |
| [CVE-2025-61661](https://patchblox.com/security/data/cve/CVE-2025-61661.md) | Routine | Grub2: grub2: out-of-bounds write via malicious usb device | 4.8 | 0.0021 |  |
| [CVE-2025-54770](https://patchblox.com/security/data/cve/CVE-2025-54770.md) | Routine | Grub2: use-after-free in net_set_vlan | 4.9 | 0.0016 |  |
| [CVE-2025-54771](https://patchblox.com/security/data/cve/CVE-2025-54771.md) | Routine | Grub2: use-after-free in grub_file_close() | 4.9 | 0.0015 |  |
| [CVE-2025-61664](https://patchblox.com/security/data/cve/CVE-2025-61664.md) | Routine | Grub2: missing unregister call for normal_exit command may lead to use-after-free | 4.9 | 0.0015 |  |
| [CVE-2025-61663](https://patchblox.com/security/data/cve/CVE-2025-61663.md) | Routine | Grub2: missing unregister call for normal commands may lead to use-after-free | 4.9 | 0.0014 |  |

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Data as of 2026-11-10T01:44:33Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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