CVE-2025-29770

一、漏洞信息
 漏洞编号：[CVE-2025-29770](https://nvd.nist.gov/vuln/detail/CVE-2025-29770)
 漏洞归属组件：[vllm](https://gitee.com/src-openeuler/vllm)
 漏洞归属的版本：0.6.6.post1
 CVSS V3.0分值：
  BaseScore：6.5 Medium
  Vector：CVSS：3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. The outlines library is one of the backends used by vLLM to support structured output (a.k.a. guided decoding). Outlines provides an optional cache for its compiled grammars on the local filesystem. This cache has been on by default in vLLM. Outlines is also available by default through the OpenAI compatible API server. The affected code in vLLM is vllm/model_executor/guided_decoding/outlines_logits_processors.py, which unconditionally uses the cache from outlines. A malicious user can send a stream of very short decoding requests with unique schemas, resulting in an addition to the cache for each request. This can result in a Denial of Service if the filesystem runs out of space. Note that even if vLLM was configured to use a different backend by default, it is still possible to choose outlines on a per-request basis using the guided_decoding_backend key of the extra_body field of the request. This issue applies only to the V0 engine and is fixed in 0.8.0.
 漏洞公开时间：2025-03-20 00:15:31
 漏洞创建时间：2025-03-20 00:51:48
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-29770
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| security-advisories.github.com | https://github.com/vllm-project/vllm/blob/53be4a863486d02bd96a59c674bbec23eec508f6/vllm/model_executor/guided_decoding/outlines_logits_processors.py |  |
| security-advisories.github.com | https://github.com/vllm-project/vllm/pull/14837 |  |
| security-advisories.github.com | https://github.com/vllm-project/vllm/security/advisories/GHSA-mgrm-fgjv-mhv8 |  |

</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:
  openBrain开源漏洞感知系统
 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  |
| ------- | -------- | ------- | -------- | --------- |
|  |  | https://github.com/vllm-project/vllm/pull/14837 |  | security-advisories.github.com |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
  vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. The outlines library is one of the backends used by vLLM to support structured output (a.k.a. guided decoding). Outlines provides an optional cache for its compiled grammars on the local filesystem. This cache has been on by default in vLLM. Outlines is also available by default through the OpenAI compatible API server. The affected code in vLLM is vllm/model_executor/guided_decoding/outlines_logits_processors.py, which unconditionally uses the cache from outlines. A malicious user can send a stream of very short decoding requests with unique schemas, resulting in an addition to the cache for each request. This can result in a Denial of Service if the filesystem runs out of space. Note that even if vLLM was configured to use a different backend by default, it is still possible to choose outlines on a per-request basis using the guided_decoding_backend key of the extra_body field of the request. This issue applies only to the V0 engine and is fixed in 0.8.0.
 openEuler评分：
  6.5
 Vector：CVSS：3.0/AV:N/AC:L/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-22.03-LTS-SP4(0.6.6.post1):受影响
2.openEuler-24.03-LTS-Next(0.6.6.post1):受影响
3.openEuler-24.03-LTS-SP1(0.6.6.post1):受影响
4.master(0.7.3):不受影响
5.openEuler-20.03-LTS-SP4:不受影响
6.openEuler-22.03-LTS-SP3:不受影响
7.openEuler-24.03-LTS:不受影响
8.openEuler-24.03-LTS-SP2:不受影响

修复是否涉及abi变化(是/否)：
  1.master(0.7.3):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3:否
4.openEuler-22.03-LTS-SP4(0.6.6.post1):否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next(0.6.6.post1):否
7.openEuler-24.03-LTS-SP1(0.6.6.post1):否
8.openEuler-24.03-LTS-SP2:否

原因说明：
  1.openEuler-22.03-LTS-SP4(0.6.6.post1):暂不修复-暂无解决方案或补丁
2.openEuler-24.03-LTS-Next(0.6.6.post1):暂不修复-暂无解决方案或补丁
3.openEuler-24.03-LTS-SP1(0.6.6.post1):暂不修复-暂无解决方案或补丁
4.openEuler-20.03-LTS-SP4:不受影响-组件不存在
5.openEuler-22.03-LTS-SP3:不受影响-组件不存在
6.openEuler-24.03-LTS:不受影响-组件不存在
7.openEuler-24.03-LTS-SP2:不受影响-组件不存在
8.master(0.7.3):不受影响-漏洞代码不在执行路径

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