CVE-2025-0686

Katalog CVE

CVSS 6.4 · Medium EPSS 0,28%

Kerentanan Out-of-bounds Write pada gnu grub2. Skor CVSS 3.1 6.4 (Medium) menurut NVD.

Deskripsi (NVD)

A flaw was found in grub2. When performing a symlink lookup from a romfs filesystem, grub's romfs filesystem module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciously crafted filesystem may lead some of those buffer size calculations to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result, the grub_romfs_read_symlink() may cause out-of-bounds writes when the calling grub_disk_read() function. This issue may be leveraged to corrupt grub's internal critical data and can result in arbitrary code execution by-passing secure boot protections.

Rincian

Terbit di NVD

3 Maret 2025

Terakhir diubah

30 Juni 2026

Status NVD

Modified

CVSS 3.1

6.4 (Medium), sumber NVD
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-787: Out-of-bounds Write

EPSS (30 hari)

0,28% peluang dieksploitasi; lebih tinggi dari 18,7% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://access.redhat.com/security/cve/CVE-2025-0686 advisory vendor
• https://bugzilla.redhat.com/show_bug.cgi?id=2346121 issue tracking
• https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html