CVE-2025-21660

一、漏洞信息
漏洞编号：CVE-2025-21660
漏洞归属组件：kernel
漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.1.8,6.4.0,6.6.0
CVSS V3.0分值：
BaseScore：5.5 Medium
Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
漏洞简述：
In the Linux kernel, the following vulnerability has been resolved:ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_lockedWhen ksmbd_vfs_kern_path_locked met an error and it is not the lastentry, it will exit without restoring changed path buffer. But later thisbuffer may be used as the filename for creation.
漏洞公开时间：2025-01-21 21:15:09
漏洞创建时间：2025-01-21 21:25:04
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2025-21660

更多参考(点击展开)

参考来源	参考链接	来源链接
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/13e41c58c74baa71f34c0830eaa3c29d53a6e964
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2ac538e40278a2c0c051cca81bcaafc547d61372
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/51669f4af5f7959565b48e55691ba92fabf5c587
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/65b31b9d992c0fb0685c51a0cf09993832734fc4
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2025-21660	https://bugzilla.suse.com/show_bug.cgi?id=1236204
suse_bugzilla	https://www.cve.org/CVERecord?id=CVE-2025-21660	https://bugzilla.suse.com/show_bug.cgi?id=1236204
suse_bugzilla	https://git.kernel.org/stable/c/13e41c58c74baa71f34c0830eaa3c29d53a6e964	https://bugzilla.suse.com/show_bug.cgi?id=1236204
suse_bugzilla	https://git.kernel.org/stable/c/2ac538e40278a2c0c051cca81bcaafc547d61372	https://bugzilla.suse.com/show_bug.cgi?id=1236204
suse_bugzilla	https://git.kernel.org/stable/c/51669f4af5f7959565b48e55691ba92fabf5c587	https://bugzilla.suse.com/show_bug.cgi?id=1236204
suse_bugzilla	https://git.kernel.org/stable/c/65b31b9d992c0fb0685c51a0cf09993832734fc4	https://bugzilla.suse.com/show_bug.cgi?id=1236204
suse_bugzilla	https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2025/CVE-2025-21660.mbox	https://bugzilla.suse.com/show_bug.cgi?id=1236204
suse_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2339136	https://bugzilla.suse.com/show_bug.cgi?id=1236204
redhat_bugzilla	https://lore.kernel.org/linux-cve-announce/2025012133-CVE-2025-21660-cfac@gregkh/T	https://bugzilla.redhat.com/show_bug.cgi?id=2339136
anolis		https://anas.openanolis.cn/cves/detail/CVE-2025-21660
mageia		http://advisories.mageia.org/MGASA-2025-0030.html

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：

详情(点击展开)

影响的包	修复版本	修复补丁	问题引入补丁	来源
linux_kernel	6.1.125	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=13e41c58c74baa71f34c0830eaa3c29d53a6e964Issue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=d1b2d2a9c912fc7b788985fbaf944e80f4b3f2af	linuxkernelcves
linux_kernel	6.6.72	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=65b31b9d992c0fb0685c51a0cf09993832734fc4Issue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=d1b2d2a9c912fc7b788985fbaf944e80f4b3f2af	linuxkernelcves
linux_kernel	6.12.10	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=51669f4af5f7959565b48e55691ba92fabf5c587Issue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=d1b2d2a9c912fc7b788985fbaf944e80f4b3f2af	linuxkernelcves
linux_kernel	6.13	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=2ac538e40278a2c0c051cca81bcaafc547d61372Issue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=d1b2d2a9c912fc7b788985fbaf944e80f4b3f2af	linuxkernelcves

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:ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_lockedWhen ksmbd_vfs_kern_path_locked met an error and it is not the lastentry, it will exit without restoring changed path buffer. But later thisbuffer may be used as the filename for creation.
openEuler评分：
5.5
Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
受影响版本排查(受影响/不受影响)：
1.openEuler-24.03-LTS(6.6.0):受影响
2.openEuler-24.03-LTS-SP1(6.6.0):受影响
3.openEuler-20.03-LTS-SP4(4.19.90):不受影响
4.openEuler-22.03-LTS-SP3(5.10.0):不受影响
5.openEuler-22.03-LTS-SP4:不受影响
6.master(6.6.0):不受影响
7.openEuler-24.03-LTS-Next(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP4(4.19.90):否
2.openEuler-22.03-LTS-SP3(5.10.0):否
3.master(6.6.0):否
4.openEuler-24.03-LTS(6.6.0):否
5.openEuler-24.03-LTS-Next(6.6.0):否
6.openEuler-22.03-LTS-SP4:否
7.openEuler-24.03-LTS-SP1(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.master(6.6.0):不受影响-漏洞代码不能被攻击者触发
4.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发
5.openEuler-20.03-LTS-SP4(4.19.90):不受影响-漏洞代码不存在
6.openEuler-22.03-LTS-SP3(5.10.0):不受影响-漏洞代码不存在
7.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-1321

@yangyingliang ,@jiaoff ,@guohaocs2c ,@hanjun-guo ,@woqidaideshi ,@newbeats ,@zhangyi089 ,@colyli ,@thundertown ,@htforge ,@chiqijun ,@lengchao ,@zhujianwei001 ,@kylin-mayukun ,@wangxiongfeng ,@wkfxxx ,@SuperSix173 ,@jentlestea ,@oskernel0719 ,@gasonchen 
**issue处理注意事项:** 
**1. 当前issue受影响的分支提交pr时, 须在pr描述中填写当前issue编号进行关联, 否则无法关闭当前issue;**
**2. 模板内容需要填写完整, 无论是受影响或者不受影响都需要填写完整内容,未引入的分支不需要填写, 否则无法关闭当前issue;**
**3. 以下为模板中需要填写完整的内容, 请复制到评论区回复, 注: 内容的标题名称(影响性分析说明, openEuler评分, 受影响版本排查(受影响/不受影响), 修复是否涉及abi变化(是/否), 原因说明)不能省略,省略后cve-manager将无法正常解析填写内容.**
************************************************************************
影响性分析说明:

openEuler评分: (评分和向量)

受影响版本排查(受影响/不受影响): 
1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3(5.10.0):
4.openEuler-22.03-LTS-SP4(5.10.0):
5.openEuler-24.03-LTS(6.6.0):
6.openEuler-24.03-LTS-Next(6.6.0):
7.openEuler-24.03-LTS-SP1(6.6.0):

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

原因说明：
1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3(5.10.0):
4.openEuler-22.03-LTS-SP4(5.10.0):
5.openEuler-24.03-LTS(6.6.0):
6.openEuler-24.03-LTS-Next(6.6.0):
7.openEuler-24.03-LTS-SP1(6.6.0):

issue处理具体操作请参考: 
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
pr关联issue具体操作请参考:
https://gitee.com/help/articles/4142

Hi openeuler-ci-bot, welcome to the openEuler Community.
I'm the Bot here serving you. You can find the instructions on how to interact with me at Here.
If you have any questions, please contact the SIG: Kernel, and any of the maintainers.

参考网址	关联pr	状态	补丁链接
https://nvd.nist.gov/vuln/detail/CVE-2025-21660	None	None	https://git.kernel.org/stable/c/13e41c58c74baa71f34c0830eaa3c29d53a6e964 https://git.kernel.org/stable/c/65b31b9d992c0fb0685c51a0cf09993832734fc4 https://git.kernel.org/stable/c/2ac538e40278a2c0c051cca81bcaafc547d61372 https://git.kernel.org/stable/c/51669f4af5f7959565b48e55691ba92fabf5c587
https://ubuntu.com/security/CVE-2025-21660	None	None	https://discourse.ubuntu.com/c/project
https://www.opencve.io/cve/CVE-2025-21660	None	None	https://git.kernel.org/stable/c/13e41c58c74baa71f34c0830eaa3c29d53a6e964 https://git.kernel.org/stable/c/65b31b9d992c0fb0685c51a0cf09993832734fc4 https://git.kernel.org/stable/c/2ac538e40278a2c0c051cca81bcaafc547d61372 https://git.kernel.org/stable/c/51669f4af5f7959565b48e55691ba92fabf5c587
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2025-21660
https://security-tracker.debian.org/tracker/CVE-2025-21660

说明：补丁链接仅供初步排查参考，实际可用性请人工再次确认，补丁下载验证可使用CVE补丁工具。
若补丁不准确，烦请在此issue下评论 '/report-patch 参考网址补丁链接1,补丁链接2' 反馈正确信息，便于我们不断优化工具，不胜感激。
如 /report-patch https://security-tracker.debian.org/tracker/CVE-2021-3997 https://github.com/systemd/systemd/commit/5b1cf7a9be37e20133c0208005274ce4a5b5c6a1

CVE-2025-21660

影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_locked

When ksmbd_vfs_kern_path_locked met an error and it is not the last
entry, it will exit without restoring changed path buffer. But later this
buffer may be used as the filename for creation.

The Linux kernel CVE team has assigned CVE-2025-21660 to this issue.

openEuler评分:(评分和向量)
5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

受影响版本排查(受影响/不受影响):
1.master(6.1.0):不受影响
2.openEuler-20.03-LTS-SP4:不受影响
3.openEuler-22.03-LTS-SP3:不受影响
4.openEuler-22.03-LTS-SP4:不受影响
5.openEuler-24.03-LTS:受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:受影响

修复是否涉及abi变化(是/否)：
1.master(6.1.0):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3:否
4.openEuler-22.03-LTS-SP4:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否

原因说明：
1.master(23.08.5):不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在
4.openEuler-22.03-LTS-SP3:不受影响-漏洞代码不存在
5.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
6.openEuler-24.03-LTS:正常修复
7.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP1:正常修复

@sanglipeng 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态  | 分析项目 | 内容 |
|:--:|:--:|---------|
|已分析|1.影响性分析说明|In the Linux kernel, the following vulnerability has been resolved:ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_lockedWhen `ksmbd_vfs_kern_path_locked` met an error and it is not the lastentry, it will exit without restoring changed path buffer. But later thisbuffer may be used as the filename for creation.The Linux kernel CVE team has assigned CVE-2025-21660 to this issue.|
|已分析|2.openEulerScore|5.5|
|已分析|3.openEulerVector|AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N|
|已分析|4.受影响版本排查|openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP1:受影响,master:不受影响,openEuler-20.03-LTS-SP4:不受影响,openEuler-22.03-LTS-SP3:不受影响,openEuler-22.03-LTS-SP4:不受影响,openEuler-24.03-LTS-Next:不受影响|
|已分析|5.是否涉及abi变化|master:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP3:否,openEuler-22.03-LTS-SP4:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-Next:否,openEuler-24.03-LTS-SP1:否|
|已分析|6.原因说明|openEuler-24.03-LTS:正常修复,openEuler-24.03-LTS-SP1:正常修复,master:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发,openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在,openEuler-22.03-LTS-SP3:不受影响-漏洞代码不存在,openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在|

**请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.**

CVE-2025-21660

影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_locked

When ksmbd_vfs_kern_path_locked met an error and it is not the last
entry, it will exit without restoring changed path buffer. But later this
buffer may be used as the filename for creation.

The Linux kernel CVE team has assigned CVE-2025-21660 to this issue.

openEuler评分:(评分和向量)
5.5
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

受影响版本排查(受影响/不受影响):
1.master(6.1.0):不受影响
2.openEuler-20.03-LTS-SP4:不受影响
3.openEuler-22.03-LTS-SP3:不受影响
4.openEuler-22.03-LTS-SP4:不受影响
5.openEuler-24.03-LTS:受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:受影响

修复是否涉及abi变化(是/否)：
1.master(6.1.0):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3:否
4.openEuler-22.03-LTS-SP4:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否

原因说明：
1.master(23.08.5):不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在
4.openEuler-22.03-LTS-SP3:不受影响-漏洞代码不存在
5.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
6.openEuler-24.03-LTS:正常修复
7.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP1:正常修复

@sanglipeng 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态  | 分析项目 | 内容 |
|:--:|:--:|---------|
|已分析|1.影响性分析说明|In the Linux kernel, the following vulnerability has been resolved:ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_lockedWhen `ksmbd_vfs_kern_path_locked` met an error and it is not the lastentry, it will exit without restoring changed path buffer. But later thisbuffer may be used as the filename for creation.The Linux kernel CVE team has assigned CVE-2025-21660 to this issue.|
|已分析|2.openEulerScore|5.5|
|已分析|3.openEulerVector|AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N|
|已分析|4.受影响版本排查|openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP1:受影响,master:不受影响,openEuler-20.03-LTS-SP4:不受影响,openEuler-22.03-LTS-SP3:不受影响,openEuler-22.03-LTS-SP4:不受影响,openEuler-24.03-LTS-Next:不受影响|
|已分析|5.是否涉及abi变化|master:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP3:否,openEuler-22.03-LTS-SP4:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-Next:否,openEuler-24.03-LTS-SP1:否|
|已分析|6.原因说明|openEuler-24.03-LTS:正常修复,openEuler-24.03-LTS-SP1:正常修复,master:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发,openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在,openEuler-22.03-LTS-SP3:不受影响-漏洞代码不存在,openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在|

**请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.**

CVE-2025-21660

影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:

ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_locked

When ksmbd_vfs_kern_path_locked met an error and it is not the last
entry, it will exit without restoring changed path buffer. But later this
buffer may be used as the filename for creation.

openEuler评分:(评分和向量)
5.5
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

受影响版本排查(受影响/不受影响):
1.openEuler-20.03-LTS-SP4:不受影响
2.openEuler-22.03-LTS-SP3:不受影响
3.openEuler-22.03-LTS-SP4:不受影响
4.master(6.6.0):不受影响
5.openEuler-24.03-LTS:受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:受影响

原因说明:
1.openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在
2.openEuler-22.03-LTS-SP3:不受影响-漏洞代码不存在
3.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在
4.master(6.6.0):不受影响-漏洞代码不能被攻击者触发
5.openEuler-24.03-LTS:正常修复
6.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1:正常修复

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP4:否
2.openEuler-22.03-LTS-SP3:否
3.master(23.08.5):否
4.openEuler-24.03-LTS:否
5.openEuler-24.03-LTS-Next:否
6.openEuler-22.03-LTS-SP4:否
7.openEuler-24.03-LTS-SP1:否

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@sanglipeng 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态  | 分析项目 | 内容 |
|:--:|:--:|---------|
|已分析|1.影响性分析说明|In the Linux kernel, the following vulnerability has been resolved:ksmbd: fix unexpectedly changed path in ksmbd_vfs_kern_path_lockedWhen `ksmbd_vfs_kern_path_locked` met an error and it is not the lastentry, it will exit without restoring changed path buffer. But later thisbuffer may be used as the filename for creation.|
|已分析|2.openEulerScore|5.5|
|已分析|3.openEulerVector|AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N|
|已分析|4.受影响版本排查|openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP1:受影响,openEuler-20.03-LTS-SP4:不受影响,openEuler-22.03-LTS-SP3:不受影响,openEuler-22.03-LTS-SP4:不受影响,master:不受影响,openEuler-24.03-LTS-Next:不受影响|
|已分析|5.是否涉及abi变化|openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP3:否,master:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-Next:否,openEuler-22.03-LTS-SP4:否,openEuler-24.03-LTS-SP1:否|
|已分析|6.原因说明|openEuler-24.03-LTS:正常修复,openEuler-24.03-LTS-SP1:正常修复,master:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发,openEuler-20.03-LTS-SP4:不受影响-漏洞代码不存在,openEuler-22.03-LTS-SP3:不受影响-漏洞代码不存在,openEuler-22.03-LTS-SP4:不受影响-漏洞代码不存在|