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153 vulnerabilities found for GRUB2 by GNU
CVE-2025-54770 (GCVE-0-2025-54770)
Vulnerability from cvelistv5 – Published: 2025-11-18 18:30 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: use-after-free in net_set_vlan
Summary
A vulnerability has been identified in the GRUB2 bootloader's network module that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the net_set_vlan command is not properly unregistered when the network module is unloaded from memory. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability
Severity ?
4.9 (Medium)
CWE
- CWE-825 - Expired Pointer Dereference
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GNU | grub2 |
Affected:
0 , ≤ 2.14
(semver)
|
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|
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CVE-2025-61664 (GCVE-0-2025-61664)
Vulnerability from cvelistv5 – Published: 2025-11-18 18:20 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: missing unregister call for normal_exit command may lead to use-after-free
Summary
A vulnerability in the GRUB2 bootloader has been identified in the normal module. This flaw, a memory Use After Free issue, occurs because the normal_exit command is not properly unregistered when its related module is unloaded. An attacker can exploit this condition by invoking the command after the module has been removed, causing the system to improperly access a previously freed memory location. This leads to a system crash or possible impacts in data confidentiality and integrity.
Severity ?
4.9 (Medium)
CWE
- CWE-825 - Expired Pointer Dereference
Assigner
References
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|---|---|---|---|---|---|---|---|---|
|
||||||||
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GNU | grub2 |
Affected:
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CVE-2025-61663 (GCVE-0-2025-61663)
Vulnerability from cvelistv5 – Published: 2025-11-18 18:20 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: missing unregister call for normal commands may lead to use-after-free
Summary
A vulnerability has been identified in the GRUB2 bootloader's normal command that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the normal command is not properly unregistered when the module is unloaded. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability. Impact on the data integrity and confidentiality is also not discarded.
Severity ?
4.9 (Medium)
CWE
- CWE-825 - Expired Pointer Dereference
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GNU | grub2 |
Affected:
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CVE-2025-61662 (GCVE-0-2025-61662)
Vulnerability from cvelistv5 – Published: 2025-11-18 18:20 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: missing unregister call for gettext command may lead to use-after-free
Summary
A Use-After-Free vulnerability has been discovered in GRUB's gettext module. This flaw stems from a programming error where the gettext command remains registered in memory after its module is unloaded. An attacker can exploit this condition by invoking the orphaned command, causing the application to access a memory location that is no longer valid. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.
Severity ?
4.9 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GNU | grub2 |
Affected:
0 , ≤ 2.14
(semver)
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CVE-2025-61661 (GCVE-0-2025-61661)
Vulnerability from cvelistv5 – Published: 2025-11-18 18:20 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: grub2: out-of-bounds write via malicious usb device
Summary
A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component. This flaw occurs because the bootloader mishandles string conversion when reading information from a USB device, allowing an attacker to exploit inconsistent length values. A local attacker can connect a maliciously configured USB device during the boot sequence to trigger this issue. A successful exploitation may lead GRUB to crash, leading to a Denial of Service. Data corruption may be also possible, although given the complexity of the exploit the impact is most likely limited.
Severity ?
4.8 (Medium)
CWE
- CWE-131 - Incorrect Calculation of Buffer Size
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GNU | grub2 |
Affected:
0 , ≤ 2.14
(semver)
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CVE-2025-54771 (GCVE-0-2025-54771)
Vulnerability from cvelistv5 – Published: 2025-11-18 18:20 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: use-after-free in grub_file_close()
Summary
A use-after-free vulnerability has been identified in the GNU GRUB (Grand Unified Bootloader). The flaw occurs because the file-closing process incorrectly retains a memory pointer, leaving an invalid reference to a file system structure. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.
Severity ?
4.9 (Medium)
CWE
- CWE-825 - Expired Pointer Dereference
Assigner
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| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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CVE-2025-0686 (GCVE-0-2025-0686)
Vulnerability from cvelistv5 – Published: 2025-03-03 17:14 – Updated: 2025-11-20 20:00
VLAI?
Title
Grub2: romfs: integer overflow when handling symlinks may lead to heap based out-of-bounds write when reading dat
Summary
A flaw was found in grub2. When performing a symlink lookup from a romfs filesystem, grub's romfs filesystem 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 grub_romfs_read_symlink() may cause out-of-bounds writes when the calling grub_disk_read() function. This issue may be leveraged to corrupt grub's internal critical data and can result in arbitrary code execution by-passing secure boot protections.
Severity ?
6.4 (Medium)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
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CVE-2025-0685 (GCVE-0-2025-0685)
Vulnerability from cvelistv5 – Published: 2025-03-03 17:14 – Updated: 2025-11-20 20:00
VLAI?
Title
Grub2: jfs: integer overflow when handling symlinks may lead to heap based out-of-bounds write when reading data
Summary
A flaw was found in grub2. When reading data from a jfs filesystem, grub's jfs filesystem module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly 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 grub_jfs_lookup_symlink() function will write past the internal buffer length during grub_jfs_read_file(). This issue can 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)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , ≤ 2.12
(semver)
|
|||||||||||||||||||||||||||||
|
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CVE-2025-0684 (GCVE-0-2025-0684)
Vulnerability from cvelistv5 – Published: 2025-03-03 17:14 – Updated: 2025-11-20 20:00
VLAI?
Title
Grub2: reiserfs: integer overflow when handling symlinks may lead to heap based out-of-bounds write when reading data
Summary
A flaw was found in grub2. When performing a symlink lookup from a reiserfs filesystem, grub's reiserfs fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly 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 grub_reiserfs_read_symlink() will call grub_reiserfs_read_real() with a overflown length parameter, leading to a heap based out-of-bounds write during data reading. This flaw may be leveraged to corrupt grub's internal critical data and can result in arbitrary code execution, by-passing secure boot protections.
Severity ?
6.4 (Medium)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Affected:
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CVE-2025-0678 (GCVE-0-2025-0678)
Vulnerability from cvelistv5 – Published: 2025-03-03 17:05 – Updated: 2025-11-20 19:59
VLAI?
Title
Grub2: squash4: integer overflow may lead to heap based out-of-bounds write when reading data
Summary
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 ?
7.8 (High)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
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CVE-2024-45782 (GCVE-0-2024-45782)
Vulnerability from cvelistv5 – Published: 2025-03-03 17:05 – Updated: 2025-11-14 01:33
VLAI?
Title
Grub2: fs/hfs: strcpy() using the volume name (fs/hfs.c:382)
Summary
A flaw was found in the HFS filesystem. When reading an HFS volume's name at grub_fs_mount(), the HFS filesystem driver performs a strcpy() using the user-provided volume name as input without properly validating the volume name's length. This issue may read to a heap-based out-of-bounds writer, impacting grub's sensitive data integrity and eventually leading to a secure boot protection bypass.
Severity ?
7.8 (High)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , ≤ 2.12
(semver)
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CVE-2024-45778 (GCVE-0-2024-45778)
Vulnerability from cvelistv5 – Published: 2025-03-03 17:05 – Updated: 2025-11-14 01:33
VLAI?
Title
Grub2: fs/bfs: integer overflow in the bfs parser.
Summary
A stack overflow flaw was found when reading a BFS file system. A crafted BFS filesystem may lead to an uncontrolled loop, causing grub2 to crash.
Severity ?
4.1 (Medium)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
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|
Affected:
0 , ≤ 2.12
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CVE-2025-54770 (GCVE-0-2025-54770)
Vulnerability from nvd – Published: 2025-11-18 18:30 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: use-after-free in net_set_vlan
Summary
A vulnerability has been identified in the GRUB2 bootloader's network module that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the net_set_vlan command is not properly unregistered when the network module is unloaded from memory. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability
Severity ?
4.9 (Medium)
CWE
- CWE-825 - Expired Pointer Dereference
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GNU | grub2 |
Affected:
0 , ≤ 2.14
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CVE-2025-61664 (GCVE-0-2025-61664)
Vulnerability from nvd – Published: 2025-11-18 18:20 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: missing unregister call for normal_exit command may lead to use-after-free
Summary
A vulnerability in the GRUB2 bootloader has been identified in the normal module. This flaw, a memory Use After Free issue, occurs because the normal_exit command is not properly unregistered when its related module is unloaded. An attacker can exploit this condition by invoking the command after the module has been removed, causing the system to improperly access a previously freed memory location. This leads to a system crash or possible impacts in data confidentiality and integrity.
Severity ?
4.9 (Medium)
CWE
- CWE-825 - Expired Pointer Dereference
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GNU | grub2 |
Affected:
0 , ≤ 2.14
(semver)
|
|||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
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CVE-2025-61663 (GCVE-0-2025-61663)
Vulnerability from nvd – Published: 2025-11-18 18:20 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: missing unregister call for normal commands may lead to use-after-free
Summary
A vulnerability has been identified in the GRUB2 bootloader's normal command that poses an immediate Denial of Service (DoS) risk. This flaw is a Use-after-Free issue, caused because the normal command is not properly unregistered when the module is unloaded. An attacker who can execute this command can force the system to access memory locations that are no longer valid. Successful exploitation leads directly to system instability, which can result in a complete crash and halt system availability. Impact on the data integrity and confidentiality is also not discarded.
Severity ?
4.9 (Medium)
CWE
- CWE-825 - Expired Pointer Dereference
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GNU | grub2 |
Affected:
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CVE-2025-61662 (GCVE-0-2025-61662)
Vulnerability from nvd – Published: 2025-11-18 18:20 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: missing unregister call for gettext command may lead to use-after-free
Summary
A Use-After-Free vulnerability has been discovered in GRUB's gettext module. This flaw stems from a programming error where the gettext command remains registered in memory after its module is unloaded. An attacker can exploit this condition by invoking the orphaned command, causing the application to access a memory location that is no longer valid. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.
Severity ?
4.9 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GNU | grub2 |
Affected:
0 , ≤ 2.14
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CVE-2025-61661 (GCVE-0-2025-61661)
Vulnerability from nvd – Published: 2025-11-18 18:20 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: grub2: out-of-bounds write via malicious usb device
Summary
A vulnerability has been identified in the GRUB (Grand Unified Bootloader) component. This flaw occurs because the bootloader mishandles string conversion when reading information from a USB device, allowing an attacker to exploit inconsistent length values. A local attacker can connect a maliciously configured USB device during the boot sequence to trigger this issue. A successful exploitation may lead GRUB to crash, leading to a Denial of Service. Data corruption may be also possible, although given the complexity of the exploit the impact is most likely limited.
Severity ?
4.8 (Medium)
CWE
- CWE-131 - Incorrect Calculation of Buffer Size
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GNU | grub2 |
Affected:
0 , ≤ 2.14
(semver)
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CVE-2025-54771 (GCVE-0-2025-54771)
Vulnerability from nvd – Published: 2025-11-18 18:20 – Updated: 2025-12-19 16:33
VLAI?
Title
Grub2: use-after-free in grub_file_close()
Summary
A use-after-free vulnerability has been identified in the GNU GRUB (Grand Unified Bootloader). The flaw occurs because the file-closing process incorrectly retains a memory pointer, leaving an invalid reference to a file system structure. An attacker could exploit this vulnerability to cause grub to crash, leading to a Denial of Service. Possible data integrity or confidentiality compromise is not discarded.
Severity ?
4.9 (Medium)
CWE
- CWE-825 - Expired Pointer Dereference
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| GNU | grub2 |
Affected:
0 , ≤ 2.14
(semver)
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CVE-2025-0686 (GCVE-0-2025-0686)
Vulnerability from nvd – Published: 2025-03-03 17:14 – Updated: 2025-11-20 20:00
VLAI?
Title
Grub2: romfs: integer overflow when handling symlinks may lead to heap based out-of-bounds write when reading dat
Summary
A flaw was found in grub2. When performing a symlink lookup from a romfs filesystem, grub's romfs filesystem 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 grub_romfs_read_symlink() may cause out-of-bounds writes when the calling grub_disk_read() function. This issue may be leveraged to corrupt grub's internal critical data and can result in arbitrary code execution by-passing secure boot protections.
Severity ?
6.4 (Medium)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
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| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
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| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , ≤ 2.12
(semver)
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CVE-2025-0685 (GCVE-0-2025-0685)
Vulnerability from nvd – Published: 2025-03-03 17:14 – Updated: 2025-11-20 20:00
VLAI?
Title
Grub2: jfs: integer overflow when handling symlinks may lead to heap based out-of-bounds write when reading data
Summary
A flaw was found in grub2. When reading data from a jfs filesystem, grub's jfs filesystem module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly 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 grub_jfs_lookup_symlink() function will write past the internal buffer length during grub_jfs_read_file(). This issue can 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)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
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CVE-2025-0684 (GCVE-0-2025-0684)
Vulnerability from nvd – Published: 2025-03-03 17:14 – Updated: 2025-11-20 20:00
VLAI?
Title
Grub2: reiserfs: integer overflow when handling symlinks may lead to heap based out-of-bounds write when reading data
Summary
A flaw was found in grub2. When performing a symlink lookup from a reiserfs filesystem, grub's reiserfs fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly 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 grub_reiserfs_read_symlink() will call grub_reiserfs_read_real() with a overflown length parameter, leading to a heap based out-of-bounds write during data reading. This flaw may be leveraged to corrupt grub's internal critical data and can result in arbitrary code execution, by-passing secure boot protections.
Severity ?
6.4 (Medium)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , ≤ 2.12
(semver)
|
|||||||||||||||||||||||||||||
|
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CVE-2025-0678 (GCVE-0-2025-0678)
Vulnerability from nvd – Published: 2025-03-03 17:05 – Updated: 2025-11-20 19:59
VLAI?
Title
Grub2: squash4: integer overflow may lead to heap based out-of-bounds write when reading data
Summary
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 ?
7.8 (High)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
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Affected:
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CVE-2024-45782 (GCVE-0-2024-45782)
Vulnerability from nvd – Published: 2025-03-03 17:05 – Updated: 2025-11-14 01:33
VLAI?
Title
Grub2: fs/hfs: strcpy() using the volume name (fs/hfs.c:382)
Summary
A flaw was found in the HFS filesystem. When reading an HFS volume's name at grub_fs_mount(), the HFS filesystem driver performs a strcpy() using the user-provided volume name as input without properly validating the volume name's length. This issue may read to a heap-based out-of-bounds writer, impacting grub's sensitive data integrity and eventually leading to a secure boot protection bypass.
Severity ?
7.8 (High)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , ≤ 2.12
(semver)
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CVE-2024-45778 (GCVE-0-2024-45778)
Vulnerability from nvd – Published: 2025-03-03 17:05 – Updated: 2025-11-14 01:33
VLAI?
Title
Grub2: fs/bfs: integer overflow in the bfs parser.
Summary
A stack overflow flaw was found when reading a BFS file system. A crafted BFS filesystem may lead to an uncontrolled loop, causing grub2 to crash.
Severity ?
4.1 (Medium)
CWE
- CWE-190 - Integer Overflow or Wraparound
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , ≤ 2.12
(semver)
|
|||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
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FKIE_CVE-2025-0686
Vulnerability from fkie_nvd - Published: 2025-03-03 18:15 - Updated: 2025-07-28 17:23
Severity ?
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
A flaw was found in grub2. When performing a symlink lookup from a romfs filesystem, grub's romfs filesystem 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 grub_romfs_read_symlink() may cause out-of-bounds writes when the calling grub_disk_read() function. This issue may be leveraged to corrupt grub's internal critical data and can result in arbitrary code execution by-passing secure boot protections.
References
| URL | Tags | ||
|---|---|---|---|
| secalert@redhat.com | https://access.redhat.com/security/cve/CVE-2025-0686 | Vendor Advisory | |
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=2346121 | Issue Tracking |
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FKIE_CVE-2025-0685
Vulnerability from fkie_nvd - Published: 2025-03-03 18:15 - Updated: 2025-07-28 17:23
Severity ?
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
A flaw was found in grub2. When reading data from a jfs filesystem, grub's jfs filesystem module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly 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 grub_jfs_lookup_symlink() function will write past the internal buffer length during grub_jfs_read_file(). This issue can be leveraged to corrupt grub's internal critical data and may result in arbitrary code execution, by-passing secure boot protections.
References
| URL | Tags | ||
|---|---|---|---|
| secalert@redhat.com | https://access.redhat.com/security/cve/CVE-2025-0685 | Vendor Advisory | |
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FKIE_CVE-2025-0684
Vulnerability from fkie_nvd - Published: 2025-03-03 18:15 - Updated: 2025-07-28 17:22
Severity ?
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
6.4 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
A flaw was found in grub2. When performing a symlink lookup from a reiserfs filesystem, grub's reiserfs fs module uses user-controlled parameters from the filesystem geometry to determine the internal buffer size, however, it improperly checks for integer overflows. A maliciouly 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 grub_reiserfs_read_symlink() will call grub_reiserfs_read_real() with a overflown length parameter, leading to a heap based out-of-bounds write during data reading. This flaw may be leveraged to corrupt grub's internal critical data and can result in arbitrary code execution, by-passing secure boot protections.
References
| URL | Tags | ||
|---|---|---|---|
| secalert@redhat.com | https://access.redhat.com/security/cve/CVE-2025-0684 | Third Party Advisory | |
| secalert@redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=2346119 | Issue Tracking |
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"value": "Se encontr\u00f3 una falla en grub2. Al realizar una b\u00fasqueda de enlace simb\u00f3lico desde un sistema de archivos reiserfs, el m\u00f3dulo de sistema de archivos reiserfs de grub utiliza par\u00e1metros controlados por el usuario de la geometr\u00eda del sistema de archivos para determinar el tama\u00f1o del b\u00fafer interno; sin embargo, verifica incorrectamente si hay desbordamientos de enteros. Un sistema de archivos manipulados con fines malintencionados puede provocar que algunos de esos c\u00e1lculos de tama\u00f1o de b\u00fafer se desborden, lo que hace que realice una operaci\u00f3n grub_malloc() con un tama\u00f1o menor al esperado. Como resultado, grub_reiserfs_read_symlink() llamar\u00e1 a grub_reiserfs_read_real() con un par\u00e1metro de longitud desbordado, lo que lleva a una escritura fuera de los l\u00edmites basada en el mont\u00f3n durante la lectura de datos. Esta falla puede aprovecharse para corromper los datos cr\u00edticos internos de grub y puede resultar en la ejecuci\u00f3n de c\u00f3digo arbitrario, eludiendo las protecciones de arranque seguro."
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"id": "CVE-2025-0684",
"lastModified": "2025-07-28T17:22:10.597",
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FKIE_CVE-2025-0678
Vulnerability from fkie_nvd - Published: 2025-03-03 17:15 - Updated: 2025-03-25 05:15
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
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.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| redhat | openshift_container_platform | 4.0 | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 |
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FKIE_CVE-2024-45782
Vulnerability from fkie_nvd - Published: 2025-03-03 17:15 - Updated: 2025-03-25 05:15
Severity ?
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A flaw was found in the HFS filesystem. When reading an HFS volume's name at grub_fs_mount(), the HFS filesystem driver performs a strcpy() using the user-provided volume name as input without properly validating the volume name's length. This issue may read to a heap-based out-of-bounds writer, impacting grub's sensitive data integrity and eventually leading to a secure boot protection bypass.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| redhat | openshift_container_platform | 4.0 | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 |
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FKIE_CVE-2024-45778
Vulnerability from fkie_nvd - Published: 2025-03-03 17:15 - Updated: 2025-03-07 20:42
Severity ?
4.1 (Medium) - CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
A stack overflow flaw was found when reading a BFS file system. A crafted BFS filesystem may lead to an uncontrolled loop, causing grub2 to crash.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| gnu | grub2 | * | |
| redhat | openshift_container_platform | 4.0 | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 |
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