CVE-2025-48945

一、漏洞信息
 漏洞编号：[CVE-2025-48945](https://nvd.nist.gov/vuln/detail/CVE-2025-48945)
 漏洞归属组件：[python-pycares](https://gitee.com/src-openeuler/python-pycares)
 漏洞归属的版本：4.0.0,4.3.0,4.4.0
 CVSS V3.0分值：
  BaseScore：N/A None
  Vector：CVSS：3.0/
 漏洞简述：
  pycares is a Python module which provides an interface to c-ares. c-ares is a C library that performs DNS requests and name resolutions asynchronously. Prior to version 4.9.0, pycares is vulnerable to a use-after-free condition that occurs when a Channel object is garbage collected while DNS queries are still pending. This results in a fatal Python error and interpreter crash. The vulnerability has been fixed in pycares 4.9.0 by implementing a safe channel destruction mechanism.
 漏洞公开时间：2025-06-17 14:03:47
 漏洞创建时间：2025-06-17 17:55:05
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2025-48945
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
|  | https://bugzilla.redhat.com/show_bug.cgi?id=2373046 |  |
|  | https://ubuntu.com/security/CVE-2025-48945 |  |
|  | https://www.cve.org/CVERecord?id=CVE-2025-48945 |  |
|  | https://github.com/aio-libs/aiodns/commit/f259a6e3650555157af53ac2b39f2ff545321d55 |  |
|  | https://github.com/aio-libs/aiodns/releases/tag/v3.5.0 |  |
|  | https://github.com/saghul/pycares/commit/ebfd7d71eb8e74bc1057a361ea79a5906db510d4 |  |
|  | https://github.com/saghul/pycares/releases/tag/v4.9.0 |  |
|  | https://github.com/saghul/pycares/security/advisories/GHSA-5qpg-rh4j-qp35 |  |
|  | https://www.mend.io/vulnerability-database/CVE-2025-48945 |  |
|  | https://security-tracker.debian.org/tracker/CVE-2025-48945 |  |
|  | https://github.com/aio-libs/aiodns/commit/f259a6e3650555157af53ac2b39f2ff545321d55 |  |
|  | https://github.com/aio-libs/aiodns/releases/tag/v3.5.0 |  |
|  | https://github.com/saghul/pycares/commit/ebfd7d71eb8e74bc1057a361ea79a5906db510d4 |  |
|  | https://github.com/saghul/pycares/releases/tag/v4.9.0 |  |
|  | https://github.com/saghul/pycares/security/advisories/GHSA-5qpg-rh4j-qp35 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2025-48945 |  |

</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  |
| ------- | -------- | ------- | -------- | --------- |
| saghul/pycares |  | https://github.com/saghul/pycares/commit/ebfd7d71eb8e74bc1057a361ea79a5906db510d4.patch |  | ljqc |
|  |  | https://github.com/aio-libs/aiodns/commit/f259a6e3650555157af53ac2b39f2ff545321d55 |  | nvd |
|  |  | https://github.com/saghul/pycares/commit/ebfd7d71eb8e74bc1057a361ea79a5906db510d4 |  | nvd |
|  |  | https://github.com/aio-libs/aiodns/commit/f259a6e3650555157af53ac2b39f2ff545321d55 |  | snyk |
|  |  | https://github.com/saghul/pycares/commit/ebfd7d71eb8e74bc1057a361ea79a5906db510d4 |  | snyk |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
  A vulnerability classified as critical was found in pycares.The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.As an impact it is known to affect confidentiality, integrity, and availability.Upgrading to version 4.9.0 eliminates this vulnerability.
 openEuler评分：
  5.5
 Vector：CVSS：3.0/AV:L/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.master(4.9.0):受影响
2.openEuler-22.03-LTS-SP3(4.9.0):受影响
3.openEuler-22.03-LTS-SP4(4.9.0):受影响
4.openEuler-24.03-LTS(4.9.0):受影响
5.openEuler-24.03-LTS-Next(4.9.0):受影响
6.openEuler-24.03-LTS-SP1(4.9.0):受影响
7.openEuler-24.03-LTS-SP2(4.9.0):受影响
8.openEuler-20.03-LTS-SP4:不受影响

修复是否涉及abi变化(是/否)：
  1.master(4.9.0):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3(4.9.0):否
4.openEuler-22.03-LTS-SP4(4.9.0):否
5.openEuler-24.03-LTS(4.9.0):否
6.openEuler-24.03-LTS-Next(4.9.0):否
7.openEuler-24.03-LTS-SP1(4.9.0):否
8.openEuler-24.03-LTS-SP2(4.9.0):否

原因说明：
  1.master(4.9.0):正常修复
2.openEuler-22.03-LTS-SP3(4.9.0):正常修复
3.openEuler-22.03-LTS-SP4(4.9.0):正常修复
4.openEuler-24.03-LTS(4.9.0):正常修复
5.openEuler-24.03-LTS-Next(4.9.0):正常修复
6.openEuler-24.03-LTS-SP1(4.9.0):正常修复
7.openEuler-24.03-LTS-SP2(4.9.0):正常修复
8.openEuler-20.03-LTS-SP4:不受影响-组件不存在

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2025-1858

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