CNVD-2025-03425
Vulnerability from cnvd - Published: 2025-02-21
VLAI
Title
Linux kernel cifs_put_tcp_session函数资源管理错误漏洞
Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。
Linux kernel存在资源管理错误漏洞，该漏洞源于cifs_put_tcp_session函数在关闭服务器时，cifsd线程可能仍在尝试重新连接DFS目标，攻击者可利用该漏洞导致server->hostname被重复释放，引发空指针引用。
Severity
中
Patch Name
Linux kernel cifs_put_tcp_session函数资源管理错误漏洞的补丁
Patch Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。
Linux kernel存在资源管理错误漏洞，该漏洞源于cifs_put_tcp_session函数在关闭服务器时，cifsd线程可能仍在尝试重新连接DFS目标，攻击者可利用该漏洞导致server->hostname被重复释放，引发空指针引用。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。
Formal description
厂商已发布了漏洞修复程序，请及时关注更新： https://git.kernel.org/stable/c/1ea68070338518a1d31ce71e6abfe1b30001b27a
Reference
https://nvd.nist.gov/vuln/detail/CVE-2025-21673
Impacted products
| Name | Linux Kernel |
|---|
{
"cves": {
"cve": {
"cveNumber": "CVE-2025-21673",
"cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2025-21673"
}
},
"description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8ecifs_put_tcp_session\u51fd\u6570\u5728\u5173\u95ed\u670d\u52a1\u5668\u65f6\uff0ccifsd\u7ebf\u7a0b\u53ef\u80fd\u4ecd\u5728\u5c1d\u8bd5\u91cd\u65b0\u8fde\u63a5DFS\u76ee\u6807\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4server-\u003ehostname\u88ab\u91cd\u590d\u91ca\u653e\uff0c\u5f15\u53d1\u7a7a\u6307\u9488\u5f15\u7528\u3002",
"formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://git.kernel.org/stable/c/1ea68070338518a1d31ce71e6abfe1b30001b27a",
"isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
"number": "CNVD-2025-03425",
"openTime": "2025-02-21",
"patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8ecifs_put_tcp_session\u51fd\u6570\u5728\u5173\u95ed\u670d\u52a1\u5668\u65f6\uff0ccifsd\u7ebf\u7a0b\u53ef\u80fd\u4ecd\u5728\u5c1d\u8bd5\u91cd\u65b0\u8fde\u63a5DFS\u76ee\u6807\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4server-\u003ehostname\u88ab\u91cd\u590d\u91ca\u653e\uff0c\u5f15\u53d1\u7a7a\u6307\u9488\u5f15\u7528\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
"patchName": "Linux kernel cifs_put_tcp_session\u51fd\u6570\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
"products": {
"product": "Linux Kernel"
},
"referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2025-21673",
"serverity": "\u4e2d",
"submitTime": "2025-02-17",
"title": "Linux kernel cifs_put_tcp_session\u51fd\u6570\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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