Vulnerability-Lookup

CNVD-2025-19252

Vulnerability from cnvd - Published: 2025-08-22

Title

GNU GRUB缓冲区溢出漏洞

Description

GNU GRUB是GNU社区的一款Linux系统引导程序。 GNU GRUB存在缓冲区溢出漏洞，该漏洞源于UFS模块，程序在处理数据时未正确管理内存分配和释放，攻击者可利用该漏洞通过执行非授权指令取得系统特权，修改系统配置。

Severity

中

Patch Name

GNU GRUB缓冲区溢出漏洞的补丁

Patch Description

GNU GRUB是GNU社区的一款Linux系统引导程序。 GNU GRUB存在缓冲区溢出漏洞，该漏洞源于UFS模块，程序在处理数据时未正确管理内存分配和释放，攻击者可利用该漏洞通过执行非授权指令取得系统特权，修改系统配置。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

厂商已发布了漏洞修复程序，请及时关注更新： https://bugzilla.redhat.com/show_bug.cgi?id=2346116

Reference

https://nvd.nist.gov/vuln/detail/CVE-2025-0677

Impacted products

Name
GNU GRUB

Show details on source website

JSON

To clipboard

{
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    "cve": {
      "cveNumber": "CVE-2025-0677",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-0677"
    }
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  "description": "GNU GRUB\u662fGNU\u793e\u533a\u7684\u4e00\u6b3eLinux\u7cfb\u7edf\u5f15\u5bfc\u7a0b\u5e8f\u3002\n\nGNU GRUB\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eUFS\u6a21\u5757\uff0c\u7a0b\u5e8f\u5728\u5904\u7406\u6570\u636e\u65f6\u672a\u6b63\u786e\u7ba1\u7406\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u6267\u884c\u975e\u6388\u6743\u6307\u4ee4\u53d6\u5f97\u7cfb\u7edf\u7279\u6743\uff0c\u4fee\u6539\u7cfb\u7edf\u914d\u7f6e\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2346116",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2025-19252",
  "openTime": "2025-08-22",
  "patchDescription": "GNU GRUB\u662fGNU\u793e\u533a\u7684\u4e00\u6b3eLinux\u7cfb\u7edf\u5f15\u5bfc\u7a0b\u5e8f\u3002\r\n\r\nGNU GRUB\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eUFS\u6a21\u5757\uff0c\u7a0b\u5e8f\u5728\u5904\u7406\u6570\u636e\u65f6\u672a\u6b63\u786e\u7ba1\u7406\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u6267\u884c\u975e\u6388\u6743\u6307\u4ee4\u53d6\u5f97\u7cfb\u7edf\u7279\u6743\uff0c\u4fee\u6539\u7cfb\u7edf\u914d\u7f6e\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "GNU GRUB\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "GNU GRUB"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-0677",
  "serverity": "\u4e2d",
  "submitTime": "2025-08-20",
  "title": "GNU GRUB\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2025-0677 (GCVE-0-2025-0677)

Vulnerability from cvelistv5 – Published: 2025-02-19 18:23 – Updated: 2026-06-29 23:24

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)


                        
                          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 2025-02-19 18:39 UTC

CWE

CWE-787 - Out-of-bounds Write

Assigner

redhat redhat root

References

5 references

URL	Tags
https://access.redhat.com/errata/RHSA-2025:16154	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:6990	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-0677	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2346116	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	Unaffected: 1:2.12-15.el10_0 , < * (rpm) cpe:/o:redhat:enterprise_linux:10.0
Red Hat	Red Hat Enterprise Linux 9	Unaffected: 1:2.06-104.el9_6 , < * (rpm) cpe:/o:redhat:enterprise_linux:9::baseos
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 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.

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.

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CNVD-2025-19252

CVE-2025-0677 (GCVE-0-2025-0677)

Tags

Sightings

Nomenclature

Related by attack behaviour