CVE-2025-1125: Grub2: fs/hfs: integer overflow may lead to heap based out-of-bounds write
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Description
When reading data from a hfs filesystem, grub's hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the internal buffers size, however it misses to properly check for integer overflows. A maliciouly crafted filesystem may lead some of those buffer size calculation to overflow, causing it to perform a grub_malloc() operation with a smaller size than expected. As a result the hfsplus_open_compressed_real() function will write past of the internal buffer length. This flaw may be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution by-passing secure boot protections.
Classification
CVE ID: CVE-2025-1125
Problem Types
Out-of-bounds WriteAffected Products
Vendor: , Red Hat, Red Hat, Red Hat, Red Hat
Product: , Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat OpenShift Container Platform 4
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.05% (probability of being exploited)
EPSS Percentile: 0.1835 (how common is this exploit)
EPSS Date: 2025-03-08 (when was this score calculated)