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alsa-2025:16154
Vulnerability from osv_almalinux
Published
2025-09-18 00:00
Modified
2025-09-25 11:34
Summary
Moderate: grub2 security update
Details
The grub2 packages provide version 2 of the Grand Unified Boot Loader (GRUB), a highly configurable and customizable boot loader with modular architecture. The packages support a variety of kernel formats, file systems, computer architectures, and hardware devices.
Security Fix(es):
- grub2: grub-core/gettext: Integer overflow leads to Heap OOB Write and Read. (CVE-2024-45776)
- grub2: fs/ufs: OOB write in the heap (CVE-2024-45781)
- grub2: command/gpg: Use-after-free due to hooks not being removed on module unload (CVE-2025-0622)
- grub2: UFS: Integer overflow may lead to heap based out-of-bounds write when handling symlinks (CVE-2025-0677)
- grub2: commands/dump: The dump command is not in lockdown when secure boot is enabled (CVE-2025-1118)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
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CVE-2024-45781 (GCVE-0-2024-45781)
Vulnerability from cvelistv5 – Published: 2025-02-18 19:25 – Updated: 2026-01-29 18:19
VLAI?
EPSS
Title
Grub2: fs/ufs: oob write in the heap
Summary
A flaw was found in grub2. When reading a symbolic link's name from a UFS filesystem, grub2 fails to validate the string length taken as an input. The lack of validation may lead to a heap out-of-bounds write, causing data integrity issues and eventually allowing an attacker to circumvent secure boot protections.
Severity ?
6.7 (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-2025-0677 (GCVE-0-2025-0677)
Vulnerability from cvelistv5 – Published: 2025-02-19 18:23 – Updated: 2026-01-29 18:20
VLAI?
EPSS
Title
Grub2: ufs: integer overflow may lead to heap based out-of-bounds write when handling symlinks
Summary
A flaw was found in grub2. When performing a symlink lookup, the grub's UFS module checks the inode's data size to allocate the internal buffer to read the file content, however, it fails to check if the symlink data size has overflown. When this occurs, grub_malloc() may be called with a smaller value than needed. When further reading the data from the disk into the buffer, the grub_ufs_lookup_symlink() function will write past the end of the allocated size. An attack can leverage this by crafting a malicious filesystem, and as a result, it will corrupt data stored in the heap, allowing for arbitrary code execution used to by-pass secure boot mechanisms.
Severity ?
6.4 (Medium)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , ≤ 2.12
(semver)
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|||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
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CVE-2025-0622 (GCVE-0-2025-0622)
Vulnerability from cvelistv5 – Published: 2025-02-18 19:26 – Updated: 2026-01-29 18:20
VLAI?
EPSS
Title
Grub2: command/gpg: use-after-free due to hooks not being removed on module unload
Summary
A flaw was found in command/gpg. In some scenarios, hooks created by loaded modules are not removed when the related module is unloaded. This flaw allows an attacker to force grub2 to call the hooks once the module that registered it was unloaded, leading to a use-after-free vulnerability. If correctly exploited, this vulnerability may result in arbitrary code execution, eventually allowing the attacker to bypass secure boot protections.
Severity ?
6.4 (Medium)
CWE
- CWE-416 - Use After Free
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , ≤ 2.12
(semver)
|
|||||||||||||||||||||||||||||
|
|||||||||||||||||||||||||||||
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CVE-2025-1118 (GCVE-0-2025-1118)
Vulnerability from cvelistv5 – Published: 2025-02-19 17:54 – Updated: 2025-11-20 20:00
VLAI?
EPSS
Title
Grub2: commands/dump: the dump command is not in lockdown when secure boot is enabled
Summary
A flaw was found in grub2. Grub's dump command is not blocked when grub is in lockdown mode, which allows the user to read any memory information, and an attacker may leverage this in order to extract signatures, salts, and other sensitive information from the memory.
Severity ?
4.4 (Medium)
CWE
- CWE-501 - Trust Boundary Violation
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , ≤ 2.12
(semver)
|
|||||||||||||||||||||||||||||
|
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CVE-2024-45776 (GCVE-0-2024-45776)
Vulnerability from cvelistv5 – Published: 2025-02-18 19:25 – Updated: 2026-01-29 17:01
VLAI?
EPSS
Title
Grub2: grub-core/gettext: integer overflow leads to heap oob write and read.
Summary
When reading the language .mo file in grub_mofile_open(), grub2 fails to verify an integer overflow when allocating its internal buffer. A crafted .mo file may lead the buffer size calculation to overflow, leading to out-of-bound reads and writes. This flaw allows an attacker to leak sensitive data or overwrite critical data, possibly circumventing secure boot protections.
Severity ?
6.7 (Medium)
CWE
- CWE-787 - Out-of-bounds Write
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Affected:
0 , ≤ 2.12
(semver)
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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