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7.8Hoch

CVE-2025-0678Grub2: squash4: integer overflow 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 Veröffentlicht: (vor 1 Jahr)

Beschreibung

A flaw was found in grub2. When reading data from a squash4 filesystem, grub's squash4 fs 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 direct_read() will perform a heap based out-of-bounds write during data reading. This flaw may be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution, by-passing secure boot protections.

Schwachstellentyp (CWE): CWE-190

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

HerstellerProduktVersionen
gnu grub2 ≤ 2.12
redhat enterprise linux 7.0
redhat openshift container platform 4.0
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

Referenzen und Patches

CPE-Treffer (NVD) (5)
  • cpe:2.3:a:gnu:grub2:*:*:*:*:*:*:*:* ≤ 2.12
  • cpe:2.3:a:redhat:openshift_container_platform:4.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*

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