CVE-2025-21761

一、漏洞信息
漏洞编号：CVE-2025-21761
漏洞归属组件：kernel
漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.4.0,6.6.0
CVSS V3.0分值：
BaseScore：7.8 High
Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
漏洞简述：
In the Linux kernel, the following vulnerability has been resolved:openvswitch: use RCU protection in ovs_vport_cmd_fill_info()ovs_vport_cmd_fill_info() can be called without RTNL or RCU.Use RCU protection and dev_net_rcu() to avoid potential UAF.
漏洞公开时间：2025-02-27 11:15:16
漏洞创建时间：2025-02-27 13:00:32
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2025-21761

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/5828937742af74666192835d657095d95c53dbd0
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a8816b3f1f151373fd30f1996f00480126c8bb11
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a884f57600e463f69d7b279c4598b865260b62a1
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e85a25d1a9985645e796039e843d1de581d2de1e
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2025-21761	https://bugzilla.suse.com/show_bug.cgi?id=1238775
suse_bugzilla	https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2025/CVE-2025-21761.mbox	https://bugzilla.suse.com/show_bug.cgi?id=1238775
suse_bugzilla	https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da	https://bugzilla.suse.com/show_bug.cgi?id=1238775
suse_bugzilla	https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074	https://bugzilla.suse.com/show_bug.cgi?id=1238775
suse_bugzilla	https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a	https://bugzilla.suse.com/show_bug.cgi?id=1238775
suse_bugzilla	https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0	https://bugzilla.suse.com/show_bug.cgi?id=1238775
suse_bugzilla	https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d	https://bugzilla.suse.com/show_bug.cgi?id=1238775
suse_bugzilla	https://www.cve.org/CVERecord?id=CVE-2025-21761	https://bugzilla.suse.com/show_bug.cgi?id=1238775
suse_bugzilla	https://github.com/CVEProject/cvelistV5/blob/main//cves/2025/21xxx/CVE-2025-21761.json	https://bugzilla.suse.com/show_bug.cgi?id=1238775
suse_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2348612	https://bugzilla.suse.com/show_bug.cgi?id=1238775
redhat_bugzilla	https://lore.kernel.org/linux-cve-announce/2025022604-CVE-2025-21761-218b@gregkh/T	https://bugzilla.redhat.com/show_bug.cgi?id=2348612

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
		https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0		nvd
		https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da		nvd
		https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074		nvd
		https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d		nvd
		https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a		nvd
		https://git.kernel.org/stable/c/a8816b3f1f151373fd30f1996f00480126c8bb11		nvd
		https://git.kernel.org/stable/c/a884f57600e463f69d7b279c4598b865260b62a1		nvd
		https://git.kernel.org/stable/c/e85a25d1a9985645e796039e843d1de581d2de1e		nvd
linux_kernel	6.1.129	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=7e01abc34e87abd091e619161a20f54ed4e3e2daIssue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9354d452034273a50a4fd703bea31e5d6b1fc20b	linuxkernelcves
linux_kernel	6.6.79	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=8ec57509c36c8b9a23e50b7858dda0c520a2d074Issue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9354d452034273a50a4fd703bea31e5d6b1fc20b	linuxkernelcves
linux_kernel	6.12.16	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a849a10de5e04d798f7f286a2f1ca174719a617aIssue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9354d452034273a50a4fd703bea31e5d6b1fc20b	linuxkernelcves
linux_kernel	6.13.4	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=5828937742af74666192835d657095d95c53dbd0Issue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9354d452034273a50a4fd703bea31e5d6b1fc20b	linuxkernelcves
linux_kernel	6.14-rc3	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=90b2f49a502fa71090d9f4fe29a2f51fe5dff76dPlease	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=9354d452034273a50a4fd703bea31e5d6b1fc20b	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:openvswitch: use RCU protection in ovs_vport_cmd_fill_info()ovs_vport_cmd_fill_info() can be called without RTNL or RCU.Use RCU protection and dev_net_rcu() to avoid potential UAF.The Linux kernel CVE team has assigned CVE-2025-21761 to this issue.
openEuler评分：
7.8
Vector：CVSS：3.0/AV:L/AC:L/PR:L/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.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-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.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

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**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-2025-21761	None	None	https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0 https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074 https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da
https://ubuntu.com/security/CVE-2025-21761
https://www.opencve.io/cve/CVE-2025-21761	None	None	https://git.kernel.org/stable/c/5828937742af74666192835d657095d95c53dbd0 https://git.kernel.org/stable/c/8ec57509c36c8b9a23e50b7858dda0c520a2d074 https://git.kernel.org/stable/c/90b2f49a502fa71090d9f4fe29a2f51fe5dff76d https://git.kernel.org/stable/c/a849a10de5e04d798f7f286a2f1ca174719a617a https://git.kernel.org/stable/c/7e01abc34e87abd091e619161a20f54ed4e3e2da
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2025-21761
https://security-tracker.debian.org/tracker/CVE-2025-21761
http://www.cnnvd.org.cn/web/vulnerability/queryLds.tag?qcvCnnvdid=CVE-2025-21761

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-2025-21761

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

openvswitch: use RCU protection in ovs_vport_cmd_fill_info()

ovs_vport_cmd_fill_info() can be called without RTNL or RCU.

Use RCU protection and dev_net_rcu() to avoid potential UAF.

The Linux kernel CVE team has assigned CVE-2025-21761 to this issue.

openEuler评分:(评分和向量)
7.8
CVSS:3.1/AV:L/AC:L/PR:L/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(6.1.0):不受影响
2.openEuler-20.03-LTS-SP4:受影响
3.openEuler-22.03-LTS-SP3:受影响
4.openEuler-22.03-LTS-SP4: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:正常修复
4.openEuler-22.03-LTS-SP3:正常修复
5.openEuler-22.03-LTS-SP4:正常修复
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:openvswitch: use RCU protection in ovs_vport_cmd_fill_info()ovs_vport_cmd_fill_info() can be called without RTNL or RCU.Use RCU protection and dev_net_rcu() to avoid potential UAF.The Linux kernel CVE team has assigned CVE-2025-21761 to this issue.|
|已分析|2.openEulerScore|7.8|
|已分析|3.openEulerVector|AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H|
|已分析|4.受影响版本排查|openEuler-20.03-LTS-SP4:受影响,openEuler-22.03-LTS-SP3:受影响,openEuler-22.03-LTS-SP4:受影响,openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP1: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|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-20.03-LTS-SP4:正常修复,openEuler-22.03-LTS-SP3:正常修复,openEuler-22.03-LTS-SP4:正常修复,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|

**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-2025-21761

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

openvswitch: use RCU protection in ovs_vport_cmd_fill_info()

ovs_vport_cmd_fill_info() can be called without RTNL or RCU.

Use RCU protection and dev_net_rcu() to avoid potential UAF.

openEuler评分:(评分和向量)
7.8
CVSS:3.1/AV:L/AC:L/PR:L/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:受影响
2.openEuler-22.03-LTS-SP3:受影响
3.openEuler-22.03-LTS-SP4: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:正常修复
2.openEuler-22.03-LTS-SP3:正常修复
3.openEuler-22.03-LTS-SP4:正常修复
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

===========================================================

@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:openvswitch: use RCU protection in ovs_vport_cmd_fill_info()ovs_vport_cmd_fill_info() can be called without RTNL or RCU.Use RCU protection and dev_net_rcu() to avoid potential UAF.|
|已分析|2.openEulerScore|7.8|
|已分析|3.openEulerVector|AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H|
|已分析|4.受影响版本排查|openEuler-20.03-LTS-SP4:受影响,openEuler-22.03-LTS-SP3:受影响,openEuler-22.03-LTS-SP4:受影响,openEuler-24.03-LTS:受影响,openEuler-24.03-LTS-SP1: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-20.03-LTS-SP4:正常修复,openEuler-22.03-LTS-SP3:正常修复,openEuler-22.03-LTS-SP4:正常修复,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|