CVE-2025-0678 - Grub2 Squash4 Integer Overflow RCE
CVE ID : CVE-2025-0678 Published : March 3, 2025, 5:15 p.m. | 1 hour, 14 minutes ago Description : 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. Severity: 6.4 | MEDIUM Visit the link for more details, such as CVSS details, affected products, timeline, and more...
CVE ID : CVE-2025-0678
Published : March 3, 2025, 5:15 p.m. | 1 hour, 14 minutes ago
Description : 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.
Severity: 6.4 | MEDIUM
Visit the link for more details, such as CVSS details, affected products, timeline, and more...
Published : March 3, 2025, 5:15 p.m. | 1 hour, 14 minutes ago
Description : 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.
Severity: 6.4 | MEDIUM
Visit the link for more details, such as CVSS details, affected products, timeline, and more...
