Vulnerability Details CVE-2025-1125
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 2.9%
CVSS Severity
CVSS v3 Score 6.4
References
Products affected by CVE-2025-1125
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cpe:2.3:a:gnu:grub2:-
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cpe:2.3:a:gnu:grub2:1.98
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cpe:2.3:a:gnu:grub2:1.99
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cpe:2.3:a:gnu:grub2:2.00
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cpe:2.3:a:gnu:grub2:2.01
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cpe:2.3:a:gnu:grub2:2.02
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cpe:2.3:a:gnu:grub2:2.04
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cpe:2.3:a:gnu:grub2:2.06
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cpe:2.3:a:gnu:grub2:2.06-150400.7.1
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cpe:2.3:a:gnu:grub2:2.06-18.1
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cpe:2.3:a:gnu:grub2:2.12