CVE-2025-39866

一、漏洞信息
 漏洞编号：[CVE-2025-39866](https://nvd.nist.gov/vuln/detail/CVE-2025-39866)
 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 V4.0分值：
  BaseScore：N/A None
  Vector：
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:fs: writeback: fix use-after-free in __mark_inode_dirty()An use-after-free issue occurred when __mark_inode_dirty() get thebdi_writeback that was in the progress of switching.CPU: 1 PID: 562 Comm: systemd-random- Not tainted 6.6.56-gb4403bd46a8e #1......pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)pc : __mark_inode_dirty+0x124/0x418lr : __mark_inode_dirty+0x118/0x418sp : ffffffc08c9dbbc0........Call trace: __mark_inode_dirty+0x124/0x418 generic_update_time+0x4c/0x60 file_modified+0xcc/0xd0 ext4_buffered_write_iter+0x58/0x124 ext4_file_write_iter+0x54/0x704 vfs_write+0x1c0/0x308 ksys_write+0x74/0x10c __arm64_sys_write+0x1c/0x28 invoke_syscall+0x48/0x114 el0_svc_common.constprop.0+0xc0/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x40/0xe4 el0t_64_sync_handler+0x120/0x12c el0t_64_sync+0x194/0x198Root cause is:systemd-random-seed                         kworker----------------------------------------------------------------------___mark_inode_dirty                     inode_switch_wbs_work_fn  spin_lock(&inode->i_lock);  inode_attach_wb  locked_inode_to_wb_and_lock_list     get inode->i_wb     spin_unlock(&inode->i_lock);     spin_lock(&wb->list_lock)  spin_lock(&inode->i_lock)  inode_io_list_move_locked  spin_unlock(&wb->list_lock)  spin_unlock(&inode->i_lock)                                    spin_lock(&old_wb->list_lock)                                      inode_do_switch_wbs                                        spin_lock(&inode->i_lock)                                        inode->i_wb = new_wb                                        spin_unlock(&inode->i_lock)                                    spin_unlock(&old_wb->list_lock)                                    wb_put_many(old_wb, nr_switched)                                      cgwb_release                                      old wb released  wb_wakeup_delayed() accesses wb,  then trigger the use-after-free  issueFix this race condition by holding inode spinlock untilwb_wakeup_delayed() finished.
 漏洞公开时间：2025-09-20 00:15:45
 漏洞创建时间：2025-09-19 23:52:14
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-39866
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39684 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38058 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38005 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38501 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40104 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-37861 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-49894 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40155 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38109 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-57900 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38350 |  |
|  | https://linux.oracle.com/cve/CVE-2025-39866.html |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-22020 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39994 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-38667 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40049 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40149 |  |
|  | https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2408 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-38584 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-42245 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-49863 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38615 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39677 |  |
|  | https://linux.oracle.com/errata/ELSA-2025-20649.html |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40061 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38664 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-21945 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-23133 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38231 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-41079 |  |
|  | https://bugzilla.redhat.com/show_bug.cgi?id=2396940 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-49957 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40075 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38470 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39947 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40121 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-40902 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39817 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-42297 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38071 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-21801 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40074 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2023-53259 |  |
|  | https://git.kernel.org/stable/c/d02d2c98d25793902f65803ab853b592c7a96b29 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38361 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38086 |  |
|  | https://lore.kernel.org/linux-cve-announce/2025091907-CVE-2025-39866-45d3@gregkh/T/#u |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40139 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38282 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2023-53241 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-57887 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39752 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-37758 |  |
|  | https://git.kernel.org/stable/c/e2a14bbae5d8bacaa301362744a110e2be40a3a3 |  |
|  | https://git.kernel.org/stable/c/e63052921f1b25a836feb1500b841bff7a4a0456 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40135 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-22025 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-38633 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-23147 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-21968 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38614 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-38381 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-49962 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-37997 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2023-53438 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-50002 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-22083 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-22039 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40058 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40158 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39866 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39881 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-21693 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-42101 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39697 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2022-50350 |  |
|  | https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2803 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39825 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38443 |  |
|  | https://www.cve.org/CVERecord?id=CVE-2025-39866 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-49935 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-37899 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2022-49234 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-49925 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39883 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-40052 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38457 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-23159 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38706 |  |
|  | https://docs.bell-sw.com/security/cves/CVE-2025-39866 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-49905 |  |
|  | https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html |  |
|  | https://git.kernel.org/stable/c/1edc2feb9c759a9883dfe81cb5ed231412d8b2e4 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-38477 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-22042 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-40904 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-39911 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2024-49950 |  |
|  | https://ubuntu.com/security/CVE-2025-39866 |  |
|  | https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-2776 |  |

</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://git.kernel.org/stable/c/1edc2feb9c759a9883dfe81cb5ed231412d8b2e4 |  | ljqc |
| gregkh/linux |  | https://git.kernel.org/stable/c/bf89b1f87c72df79cf76203f71fbf8349cd5c9de |  | ljqc |
| gregkh/linux |  | https://git.kernel.org/stable/c/e63052921f1b25a836feb1500b841bff7a4a0456 |  | ljqc |
| gregkh/linux |  | https://git.kernel.org/stable/c/d02d2c98d25793902f65803ab853b592c7a96b29 |  | ljqc |
|  |  | https://git.kernel.org/stable/c/d02d2c98d25793902f65803ab853b592c7a96b29 |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/e2a14bbae5d8bacaa301362744a110e2be40a3a3 |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/e63052921f1b25a836feb1500b841bff7a4a0456 |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/1edc2feb9c759a9883dfe81cb5ed231412d8b2e4 |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/bf89b1f87c72df79cf76203f71fbf8349cd5c9de |  | cvelistv5 |
|  |  | https://git.kernel.org/linus/d02d2c98d25793902f65803ab853b592c7a96b29 |  | osv |
|  |  | https://git.kernel.org/stable/c/b187c976111960e6e54a6b1fff724f6e3d39406c |  | cvelistv5 |
|  |  | https://git.kernel.org/stable/c/c8c14adf80bd1a6e4a1d7ee9c2a816881c26d17a |  | cvelistv5 |

</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:fs: writeback: fix use-after-free in __mark_inode_dirty()An use-after-free issue occurred when __mark_inode_dirty() get thebdi_writeback that was in the progress of switching.CPU: 1 PID: 562 Comm: systemd-random- Not tainted 6.6.56-gb4403bd46a8e #1......pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)pc : __mark_inode_dirty+0x124/0x418lr : __mark_inode_dirty+0x118/0x418sp : ffffffc08c9dbbc0........Call trace: __mark_inode_dirty+0x124/0x418 generic_update_time+0x4c/0x60 file_modified+0xcc/0xd0 ext4_buffered_write_iter+0x58/0x124 ext4_file_write_iter+0x54/0x704 vfs_write+0x1c0/0x308 ksys_write+0x74/0x10c __arm64_sys_write+0x1c/0x28 invoke_syscall+0x48/0x114 el0_svc_common.constprop.0+0xc0/0xe0 do_el0_svc+0x1c/0x28 el0_svc+0x40/0xe4 el0t_64_sync_handler+0x120/0x12c el0t_64_sync+0x194/0x198Root cause is:systemd-random-seed                         kworker----------------------------------------------------------------------___mark_inode_dirty                     inode_switch_wbs_work_fn  spin_lock(&amp;inode-&gt;i_lock);  inode_attach_wb  locked_inode_to_wb_and_lock_list     get inode-&gt;i_wb     spin_unlock(&amp;inode-&gt;i_lock);     spin_lock(&amp;wb-&gt;list_lock)  spin_lock(&amp;inode-&gt;i_lock)  inode_io_list_move_locked  spin_unlock(&amp;wb-&gt;list_lock)  spin_unlock(&amp;inode-&gt;i_lock)                                    spin_lock(&amp;old_wb-&gt;list_lock)                                      inode_do_switch_wbs                                        spin_lock(&amp;inode-&gt;i_lock)                                        inode-&gt;i_wb = new_wb                                        spin_unlock(&amp;inode-&gt;i_lock)                                    spin_unlock(&amp;old_wb-&gt;list_lock)                                    wb_put_many(old_wb, nr_switched)                                      cgwb_release                                      old wb released  wb_wakeup_delayed() accesses wb,  then trigger the use-after-free  issueFix this race condition by holding inode spinlock untilwb_wakeup_delayed() finished.The Linux kernel CVE team has assigned CVE-2025-39866 to this issue.
 openEuler评分：
  6.4
 Vector：CVSS:3.1/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.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.openEuler-24.03-LTS-SP3(6.6.0):受影响
8.master(6.12.33):不受影响
9.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
9.openEuler-24.03-LTS-SP3(6.6.0):否

原因说明：
  1.openEuler-20.03-LTS-SP4(4.19.90):正常修复
2.openEuler-22.03-LTS-SP3(5.10.0):正常修复
3.openEuler-22.03-LTS-SP4(5.10.0):正常修复
4.openEuler-24.03-LTS(6.6.0):正常修复
5.openEuler-24.03-LTS-SP1(6.6.0):正常修复
6.openEuler-24.03-LTS-SP2(6.6.0):正常修复
7.openEuler-24.03-LTS-SP3(6.6.0):正常修复
8.master(6.12.33):不受影响-漏洞代码不能被攻击者触发
9.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-2025-2803

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