CVE-2022-49938

一、漏洞信息
 漏洞编号：[CVE-2022-49938](https://nvd.nist.gov/vuln/detail/CVE-2022-49938)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/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：N/A None
  Vector：CVSS：3.0/
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:cifs: fix small mempool leak in SMB2_negotiate()In some cases of failure (dialect mismatches) in SMB2_negotiate(), afterthe request is sent, the checks would return -EIO when they should berather setting rc = -EIO and jumping to neg_exit to free the responsebuffer from mempool.
 漏洞公开时间：2025-06-18 19:15:20
 漏洞创建时间：2025-06-19 10:43:50
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2022-49938
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
|  | https://git.kernel.org/stable/c/27893dfc1285f80f80f46b3b8c95f5d15d2e66d0 |  |
|  | https://git.kernel.org/stable/c/38a6b469bf22f153282fbe7d702a24e9eb43f50e |  |
|  | https://git.kernel.org/stable/c/9e3c9efa7caf16e5acc05eab5e4d0a714e1610b0 |  |
|  | https://security-tracker.debian.org/tracker/CVE-2022-49938 |  |
|  | https://www.cve.org/CVERecord?id=CVE-2022-49938 |  |
|  | https://nvd.nist.gov/vuln/detail/CVE-2022-49938 |  |
|  | https://lore.kernel.org/linux-cve-announce/2025061848-CVE-2022-49938-3c2f@gregkh/T |  |
|  | https://bugzilla.redhat.com/show_bug.cgi?id=2373401 |  |
|  | https://access.redhat.com/errata/RHSA-2023:6583.html |  |
|  | https://vigilance.fr/vulnerability/Linux-kernel-multiple-vulnerabilities-dated-18-06-2025-47466 |  |

</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  |
| ------- | -------- | ------- | -------- | --------- |
| gregkh/linux |  | https://github.com/gregkh/linux/commit/27893dfc1285f80f80f46b3b8c95f5d15d2e66d0.patch |  | ljqc |
|  |  | https://git.kernel.org/stable/c/27893dfc1285f80f80f46b3b8c95f5d15d2e66d0 |  | nvd |
|  |  | https://git.kernel.org/stable/c/38a6b469bf22f153282fbe7d702a24e9eb43f50e |  | nvd |
|  |  | https://git.kernel.org/stable/c/9e3c9efa7caf16e5acc05eab5e4d0a714e1610b0 |  | nvd |

</details>

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:cifs: fix small mempool leak in SMB2_negotiate()In some cases of failure (dialect mismatches) in SMB2_negotiate(), afterthe request is sent, the checks would return -EIO when they should berather setting rc = -EIO and jumping to neg_exit to free the responsebuffer from mempool.The Linux kernel CVE team has assigned CVE-2022-49938 to this issue.
 openEuler评分：
  3.9
 Vector：CVSS：3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L
 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.master(6.12.33):不受影响
5.openEuler-24.03-LTS(6.6.0):不受影响
6.openEuler-24.03-LTS-Next(6.6.0):不受影响
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响
8.openEuler-24.03-LTS-SP2(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.master(6.12.33):不受影响-漏洞代码不能被攻击者触发
5.openEuler-24.03-LTS(6.6.0):不受影响-漏洞代码不能被攻击者触发
6.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP2(6.6.0):不受影响-漏洞代码不能被攻击者触发

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