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6.4Orta

CVE-2025-0685Grub2: jfs: integer overflow when handling symlinks may lead to heap based out-of-bounds write when reading data

grub2; Red Hat Red Hat Enterprise Linux 10; Red Hat Red Hat Enterprise Linux 7; Red Hat Red Hat Enterprise Linux 8 Yayım: (1 yıl önce)

Açıklama

A flaw was found in grub2. When reading data from a jfs filesystem, grub's jfs filesystem module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly 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_jfs_lookup_symlink() function will write past the internal buffer length during grub_jfs_read_file(). This issue can be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution, by-passing secure boot protections.

Zayıflık türü (CWE): CWE-787

Veri: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Bilgiler kaynaktaki haliyle, İngilizce yayımlanır.

Etkilenen ürünler ve sürümler

ÜreticiÜrünSürümler
gnu grub2 ≤ 2.12
Red Hat Red Hat Enterprise Linux 10 —
Red Hat Red Hat Enterprise Linux 7 —
Red Hat Red Hat Enterprise Linux 8 —
Red Hat Red Hat Enterprise Linux 9 —
Red Hat Red Hat OpenShift Container Platform 4 —
— grub2 ≤ 2.12

Kaynaklar ve yamalar

CPE eşleşmeleri (NVD) (1)
  • cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* ≤ 2.12

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