CVE-2023-46862

一、漏洞信息
 漏洞编号：[CVE-2023-46862](https://nvd.nist.gov/vuln/detail/CVE-2023-46862)
 漏洞归属组件：[kernel](https://gitee.com/src-openeuler/kernel)
 漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0
 CVSS V3.0分值：
  BaseScore：4.7 Medium
  Vector：CVSS：3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
 漏洞简述：
  An issue was discovered in the Linux kernel through 6.5.9. During a race with SQ thread exit, an io_uring/fdinfo.c io_uring_show_fdinfo NULL pointer dereference can occur.
 漏洞公开时间：2023-10-29 12:15:11
 漏洞创建时间：2023-10-29 12:34:59
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2023-46862
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| cve.mitre.org | https://bugzilla.kernel.org/show_bug.cgi?id=218032#c4 |  |
| cve.mitre.org | https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2023-46862 | https://bugzilla.suse.com/show_bug.cgi?id=1216693 |
| redhat_bugzilla | https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46 | https://bugzilla.redhat.com/show_bug.cgi?id=2246980 |
| redhat_bugzilla | https://bugzilla.kernel.org/show_bug.cgi?id=218032#c4 | https://bugzilla.redhat.com/show_bug.cgi?id=2246980 |
| cve_search |  | https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46 |
| cve_search |  | https://bugzilla.kernel.org/show_bug.cgi?id=218032#c4 |
| amazon_linux_explore | https://access.redhat.com/security/cve/CVE-2023-46862 | https://explore.alas.aws.amazon.com/CVE-2023-46862.html |
| amazon_linux_explore | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-46862 | https://explore.alas.aws.amazon.com/CVE-2023-46862.html |
| snyk | https://bugzilla.kernel.org/show_bug.cgi?id=218032#c4 | https://security.snyk.io/vuln/SNYK-UNMANAGED-TORVALDSLINUX-6038575 |
| snyk | https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46 | https://security.snyk.io/vuln/SNYK-UNMANAGED-TORVALDSLINUX-6038575 |
| cve.mitre.org | https://bugzilla.kernel.org/show_bug.cgi?id=218032#c4 |  |
| cve.mitre.org | https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46 |  |

</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/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46 |  | cve.mitre.org |
|  |  | https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46 |  | redhat_bugzilla |
|  |  | https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46 |  | snyk |
| linux_kernel | 6.1.61 | https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=9236d2ea6465b37c0a73d994c1ad31753d31e5f5 |  | linuxkernelcves |
| linux_kernel | 6.5.10 | https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=56e08ccc969796168f0e6adf6642f8546f54ba6f |  | linuxkernelcves |
| linux_kernel | 6.6 | https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=7644b1a1c9a7ae8ab99175989bfc8676055edb46 |  | linuxkernelcves |

</details>

二、漏洞分析结构反馈
 影响性分析说明：
        An issue was discovered in the Linux kernel through 6.5.9. During a race with SQ thread exit, an io_uring/fdinfo.c io_uring_show_fdinfo NULL pointer dereference can occur.   
 openEuler评分：
  5.5
 Vector：CVSS：2.0/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.openEuler-22.03-LTS:受影响
2.openEuler-22.03-LTS-SP1:受影响
3.openEuler-22.03-LTS-SP2:受影响
4.openEuler-20.03-LTS-SP1(4.19.90):不受影响
5.openEuler-20.03-LTS-SP3:不受影响
6.openEuler-20.03-LTS-SP4:不受影响

修复是否涉及abi变化(是/否)：
  1.openEuler-20.03-LTS-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP3:否
3.openEuler-20.03-LTS-SP4:否
4.openEuler-22.03-LTS:否
5.openEuler-22.03-LTS-SP1:否
6.openEuler-22.03-LTS-SP2:否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2023-1799

@yangyingliang ,@gatieme ,@jiaoff ,@guohaocs2c ,@hanjun-guo ,@woqidaideshi ,@newbeats ,@zhangyi089 ,@colyli ,@thundertown ,@htforge ,@chiqijun ,@lengchao ,@zhujianwei001 ,@kylin-mayukun ,@wangxiongfeng ,@wkfxxx ,@SuperSix173 ,@jentlestea ,@oskernel0719 
**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))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.openEuler-20.03-LTS-SP1(4.19.90):
2.openEuler-20.03-LTS-SP3:
3.openEuler-20.03-LTS-SP4:
4.openEuler-22.03-LTS:
5.openEuler-22.03-LTS-SP1:
6.openEuler-22.03-LTS-SP2:

修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(4.19.90):
2.openEuler-20.03-LTS-SP3:
3.openEuler-20.03-LTS-SP4:
4.openEuler-22.03-LTS:
5.openEuler-22.03-LTS-SP1:
6.openEuler-22.03-LTS-SP2:

-----------------------------------------------------------------------
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

<table><tr><th white-space: nowrap;>参考网址</th> <th white-space: nowrap;>关联pr</th> <th white-space: nowrap;>状态</th> <th white-space: nowrap;>补丁链接</th></tr><tr><td rowspan="1">https://nvd.nist.gov/vuln/detail/CVE-2023-46862</td><td>None</td><td>None</td><td><a href=https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46>https://github.com/torvalds/linux/commit/7644b1a1c9a7ae8ab99175989bfc8676055edb46</a></td></tr><tr><td>https://ubuntu.com/security/CVE-2023-46862</td><td></td><td></td><td></td></tr><tr><td>https://www.opencve.io/cve/CVE-2023-46862</td><td></td><td></td><td></td></tr><tr><td>https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2023-46862</td><td></td><td></td><td></td></tr><tr><td>https://security-tracker.debian.org/tracker/CVE-2023-46862</td><td></td><td></td><td></td></tr></table>

> 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](https://gitee.com/openeuler/cve-manager/blob/master/cve-agency-manager/cve_tracking/README.md)。
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

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