CVE-2025-0686

一、漏洞信息
 漏洞编号：[CVE-2025-0686](https://nvd.nist.gov/vuln/detail/CVE-2025-0686)
 漏洞归属组件：[grub2](https://gitee.com/src-openeuler/grub2)
 漏洞归属的版本：2.04,2.06,2.12
 CVSS V3.0分值：
  BaseScore：6.4 Medium
  Vector：CVSS：3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
 漏洞简述：
  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.
 漏洞公开时间：2025-03-04 02:15:30
 漏洞创建时间：2025-02-19 09:43:53
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-0686
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| secalert.redhat.com | https://access.redhat.com/security/cve/CVE-2025-0686 |  |
| secalert.redhat.com | https://bugzilla.redhat.com/show_bug.cgi?id=2346121 |  |
| suse_bugzilla | https://smelt.suse.de/incident/37157/ | https://bugzilla.suse.com/show_bug.cgi?id=1237010 |
| suse_bugzilla | https://smelt.suse.de/incident/37156/ | https://bugzilla.suse.com/show_bug.cgi?id=1237010 |
| suse_bugzilla | https://smelt.suse.de/incident/37155/ | https://bugzilla.suse.com/show_bug.cgi?id=1237010 |
| amazon_linux_explore | https://access.redhat.com/security/cve/CVE-2025-0686 | https://explore.alas.aws.amazon.com/CVE-2025-0686.html |
| amazon_linux_explore | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-0686 | https://explore.alas.aws.amazon.com/CVE-2025-0686.html |

</details>

漏洞分析指导链接：
  https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
 漏洞数据来源:
  openBrain开源漏洞感知系统
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

无
</details>

二、漏洞分析结构反馈
 影响性分析说明：
  从romfs文件系统执行符号链接查找时，grub2的romfs文件系模块使用用户控制参数来确定内部缓冲区大小，但是，它没有检查整数溢出。恶意构建的文件系统可能会导致其中一些缓冲区大小计算溢出，导致它执行比预期更小的grub_malloc()操作。因此，当调用grub_disk_read()函数时，grub_romfs_read_symlink()可能会导致越界写入。此问题可能被用来破坏grub2的内部关键数据，并可能绕过安全启动保护来导致任意代码执行。
 openEuler评分：
  6.4
 Vector：CVSS：3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
 受影响版本排查(受影响/不受影响)：
  1.master(2.12):受影响
2.openEuler-20.03-LTS-SP4(2.04):受影响
3.openEuler-22.03-LTS-SP3(2.06):受影响
4.openEuler-22.03-LTS-SP4(2.06):受影响
5.openEuler-24.03-LTS(2.12):受影响
6.openEuler-24.03-LTS-Next(2.12):受影响
7.openEuler-24.03-LTS-SP1(2.12):受影响

修复是否涉及abi变化(是/否)：
  1.master(2.12):否
2.openEuler-20.03-LTS-SP4(2.04):否
3.openEuler-22.03-LTS-SP3(2.06):否
4.openEuler-22.03-LTS-SP4(2.06):否
5.openEuler-24.03-LTS(2.12):否
6.openEuler-24.03-LTS-Next(2.12):否
7.openEuler-24.03-LTS-SP1(2.12):否

原因说明：
  1.master(2.12):正常修复
2.openEuler-20.03-LTS-SP4(2.04):正常修复
3.openEuler-22.03-LTS-SP3(2.06):正常修复
4.openEuler-22.03-LTS-SP4(2.06):正常修复
5.openEuler-24.03-LTS(2.12):正常修复
6.openEuler-24.03-LTS-Next(2.12):正常修复
7.openEuler-24.03-LTS-SP1(2.12):正常修复

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-1292

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