CVE-2025-38102

一、漏洞信息
 漏洞编号：[CVE-2025-38102](https://nvd.nist.gov/vuln/detail/CVE-2025-38102)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.4.0,6.6.0
 CVSS V3.0分值：
  BaseScore：N/A None
  Vector：CVSS：3.0/
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:VMCI: fix race between vmci_host_setup_notify and vmci_ctx_unset_notifyDuring our test, it is found that a warning can be trigger in try_grab_folioas follow:  ------------[ cut here ]------------  WARNING: CPU: 0 PID: 1678 at mm/gup.c:147 try_grab_folio+0x106/0x130  Modules linked in:  CPU: 0 UID: 0 PID: 1678 Comm: syz.3.31 Not tainted 6.15.0-rc5 #163 PREEMPT(undef)  RIP: 0010:try_grab_folio+0x106/0x130  Call Trace:   <TASK>   follow_huge_pmd+0x240/0x8e0   follow_pmd_mask.constprop.0.isra.0+0x40b/0x5c0   follow_pud_mask.constprop.0.isra.0+0x14a/0x170   follow_page_mask+0x1c2/0x1f0   __get_user_pages+0x176/0x950   __gup_longterm_locked+0x15b/0x1060   ? gup_fast+0x120/0x1f0   gup_fast_fallback+0x17e/0x230   get_user_pages_fast+0x5f/0x80   vmci_host_unlocked_ioctl+0x21c/0xf80  RIP: 0033:0x54d2cd  ---[ end trace 0000000000000000 ]---Digging into the source, context->notify_page may init by get_user_pages_fastand can be seen in vmci_ctx_unset_notify which will try to put_page. Howeverget_user_pages_fast is not finished here and lead to followingtry_grab_folio warning. The race condition is shown as follow:cpu0			cpu1vmci_host_do_set_notifyvmci_host_setup_notifyget_user_pages_fast(uva, 1, FOLL_WRITE, &context->notify_page);lockless_pages_from_mmgup_pgd_rangegup_huge_pmd  // update &context->notify_page			vmci_host_do_set_notify			vmci_ctx_unset_notify			notify_page = context->notify_page;			if (notify_page)			put_page(notify_page);	// page is freed__gup_longterm_locked__get_user_pagesfollow_trans_huge_pmdtry_grab_folio // warn hereTo slove this, use local variable page to make notify_page can be seenafter finish get_user_pages_fast.
 漏洞公开时间：2025-07-03 00:00:00
 漏洞创建时间：2025-07-03 18:25:06
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-38102
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
|  | https://advisory.echohq.com/cve/CVE-2025-38102 |  |

</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:
  七彩瞬析开源风险感知平台
 漏洞补丁信息：
  <details>
<summary>详情(点击展开)</summary>

| 影响的包 | 修复版本 | 修复补丁 | 问题引入补丁 | 来源  |
| ------- | -------- | ------- | -------- | --------- |
| gregkh/linux |  | https://github.com/gregkh/linux/commit/00ddc7dad55b7bbb78df80d6e174d0c4764dea0c.patch |  | ljqc |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
  In the Linux kernel, the following vulnerability has been resolved:VMCI: fix race between vmci_host_setup_notify and vmci_ctx_unset_notifyDuring our test, it is found that a warning can be trigger in try_grab_folioas follow:  ------------[ cut here ]------------  WARNING: CPU: 0 PID: 1678 at mm/gup.c:147 try_grab_folio+0x106/0x130  Modules linked in:  CPU: 0 UID: 0 PID: 1678 Comm: syz.3.31 Not tainted 6.15.0-rc5 #163 PREEMPT(undef)  RIP: 0010:try_grab_folio+0x106/0x130  Call Trace:   &lt;TASK&gt;   follow_huge_pmd+0x240/0x8e0   follow_pmd_mask.constprop.0.isra.0+0x40b/0x5c0   follow_pud_mask.constprop.0.isra.0+0x14a/0x170   follow_page_mask+0x1c2/0x1f0   __get_user_pages+0x176/0x950   __gup_longterm_locked+0x15b/0x1060   ? gup_fast+0x120/0x1f0   gup_fast_fallback+0x17e/0x230   get_user_pages_fast+0x5f/0x80   vmci_host_unlocked_ioctl+0x21c/0xf80  RIP: 0033:0x54d2cd  ---[ end trace 0000000000000000 ]---Digging into the source, context-&gt;notify_page may init by get_user_pages_fastand can be seen in vmci_ctx_unset_notify which will try to put_page. Howeverget_user_pages_fast is not finished here and lead to followingtry_grab_folio warning. The race condition is shown as follow:cpu0cpu1vmci_host_do_set_notifyvmci_host_setup_notifyget_user_pages_fast(uva, 1, FOLL_WRITE, &#38;context-&gt;notify_page);lockless_pages_from_mmgup_pgd_rangegup_huge_pmd  // update &#38;context-&gt;notify_pagevmci_host_do_set_notifyvmci_ctx_unset_notifynotify_page = context-&gt;notify_page;if (notify_page)put_page(notify_page);// page is freed__gup_longterm_locked__get_user_pagesfollow_trans_huge_pmdtry_grab_folio // warn hereTo slove this, use local variable page to make notify_page can be seenafter finish get_user_pages_fast.The Linux kernel CVE team has assigned CVE-2025-38102 to this issue.
 openEuler评分：
  4.7
 Vector：CVSS：3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP4(4.19.90):受影响
2.openEuler-22.03-LTS-SP3(5.10.0):受影响
3.openEuler-22.03-LTS-SP4(5.10.0):受影响
4.openEuler-24.03-LTS(6.6.0):受影响
5.openEuler-24.03-LTS-SP1(6.6.0):受影响
6.openEuler-24.03-LTS-SP2(6.6.0):受影响
7.master(6.12.33):不受影响
8.openEuler-24.03-LTS-Next(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
  1.master(6.12.33):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.openEuler-22.03-LTS-SP4(5.10.0):否
5.openEuler-24.03-LTS(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):否
7.openEuler-24.03-LTS-SP1(6.6.0):否
8.openEuler-24.03-LTS-SP2(6.6.0):否

原因说明：
  1.openEuler-24.03-LTS(6.6.0):正常修复
2.openEuler-24.03-LTS-SP1(6.6.0):正常修复
3.openEuler-24.03-LTS-SP2(6.6.0):正常修复
4.openEuler-20.03-LTS-SP4(4.19.90):不修复-超出修复范围
5.openEuler-22.03-LTS-SP3(5.10.0):不修复-超出修复范围
6.openEuler-22.03-LTS-SP4(5.10.0):不修复-超出修复范围
7.master(6.12.33):不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-2270

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