CVE-2025-1125
published 2025-03-03CVE-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…
PriorityP342high7.8CVSS 3.1
AVLACLPRNUIRSUCHIHAH
EPSS
0.37%
29.3th percentile
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.
Affected
8 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | grub2 | < grub2 2.12-6 (forky) | grub2 2.12-6 (forky) |
| gnu | grub2 | <= 2.12 | — |
| gnu | grub2 | >= 0 < 2.12-6 | 2.12-6 |
| gnu | grub2 | >= 0 < 2.12-6 | 2.12-6 |
| msrc | azl3_grub2_2.06-24_on_azure_linux_3.0 | — | — |
| msrc | azl3_grub2_2.06-25_on_azure_linux_3.0 | — | — |
| msrc | cbl2_grub2_2.06-14_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_grub2_2.06-15_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
vendor_msrc6.4MEDIUM
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GHSA
GHSA-jqm6-8ggx-r3ww: When reading data from a hfs filesystem, grub's hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the in
ghsa_unreviewed·2025-03-03
CVE-2025-1125 [MEDIUM] CWE-787 GHSA-jqm6-8ggx-r3ww: When reading data from a hfs filesystem, grub's hfs filesystem module uses user-controlled parameters from the filesystem metadata to calculate the in
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.
OSV
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 in
osv·2025-03-03·CVSS 7.8
CVE-2025-1125 [HIGH] 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 in
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.
Microsoft
Grub2: fs/hfs: integer overflow may lead to heap based out-of-bounds write
vendor_msrc·2025-03-11·CVSS 6.4
CVE-2025-1125 [HIGH] CWE-787 Grub2: fs/hfs: integer overflow may lead to heap based out-of-bounds write
Grub2: fs/hfs: integer overflow may lead to heap based out-of-bounds write
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
redhat: redhat
Customer Action Required: Yes
Remediation: CBL-Mariner Releases
Ref
Red Hat
grub2: fs/hfs: Integer overflow may lead to heap based out-of-bounds write
vendor_redhat·2025-02-18·CVSS 7.8
CVE-2025-1125 [HIGH] CWE-787 grub2: fs/hfs: Integer overflow may lead to heap based out-of-bounds write
grub2: fs/hfs: Integer overflow may lead to heap based out-of-bounds write
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.
When reading data from a hfs filesystem, grub's hfs filesystem modul
Debian
CVE-2025-1125: grub2 - When reading data from a hfs filesystem, grub's hfs filesystem module uses user-...
vendor_debian·2025·CVSS 7.8
CVE-2025-1125 [HIGH] CVE-2025-1125: grub2 - When reading data from a hfs filesystem, grub's hfs filesystem module uses user-...
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.
Scope: local
bookworm: open
bullseye: open
forky: resolved (fixed in 2.12-6)
sid: resolved (fixed in 2.12-6)
trixie: resolved (fixed in 2.12-6)
No detection rules found.
No public exploits indexed.
2025-03-03
Published