Vulnerability-Lookup

CNVD-2025-09674

Vulnerability from cnvd - Published: 2025-05-14

Title

GNU GRUB2缓冲区溢出漏洞（CNVD-2025-09674）

Description

GNU GRUB2是GNU社区的一款Linux系统引导程序。 GNU GRUB2存在缓冲区溢出漏洞，该漏洞源于reiserfs fs模块未正确检查整数溢出问题，攻击者可利用该漏洞导致堆越界写入，损坏内部关键数据并执行任意代码。

Severity

中

Patch Name

GNU GRUB2缓冲区溢出漏洞（CNVD-2025-09674）的补丁

Patch Description

GNU GRUB2是GNU社区的一款Linux系统引导程序。 GNU GRUB2存在缓冲区溢出漏洞，该漏洞源于reiserfs fs模块未正确检查整数溢出问题，攻击者可利用该漏洞导致堆越界写入，损坏内部关键数据并执行任意代码。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级程序修复该安全问题，详情见厂商官网： https://www.gnu.org/software/grub/grub-download.html

Reference

https://nvd.nist.gov/vuln/detail/CVE-2025-0684

Impacted products

Name
GNU GRUB2

Show details on source website

JSON

To clipboard

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2025-0684",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-0684"
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-09674",
  "openTime": "2025-05-14",
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  "serverity": "\u4e2d",
  "submitTime": "2025-04-29",
  "title": "GNU GRUB2\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff08CNVD-2025-09674\uff09"
}

CVE-2025-0684 (GCVE-0-2025-0684)

Vulnerability from cvelistv5 – Published: 2025-03-03 17:14 – Updated: 2026-06-29 23:24

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)


                        
                          CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-03-04 16:14 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

redhat redhat root

References

3 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2025-0684	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2346119	issue-trackingx_refsource_REDHAT
https://lists.gnu.org/archive/html/grub-devel/202…

Impacted products

6 products

Vendor	Product	Version
		Affected: 0 , ≤ 2.12 (semver)
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

Date Public

2025-02-18 18:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.