CVE-2021-47194

一、漏洞信息
 漏洞编号：[CVE-2021-47194](https://nvd.nist.gov/vuln/detail/CVE-2021-47194)
 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：7.8 High
  Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
 漏洞简述：
  In the Linux kernel, the following vulnerability has been resolved:cfg80211: call cfg80211_stop_ap when switch from P2P_GO typeIf the userspace tools switch from NL80211_IFTYPE_P2P_GO toNL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), itdoes not call the cleanup cfg80211_stop_ap(), this leads to theinitialization of in-use data. For example, this path re-init thesdata->assigned_chanctx_list while it is still an element ofassigned_vifs list, and makes that linked list corrupt.
 漏洞公开时间：2024-04-11 03:15:47
 漏洞创建时间：2024-04-11 04:40:45
 漏洞详情参考链接：
  https://nvd.nist.gov/vuln/detail/CVE-2021-47194
<details>
<summary>更多参考(点击展开)</summary>

| 参考来源 | 参考链接 | 来源链接 |
| ------- | -------- | -------- |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47194 | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2021/CVE-2021-47194.mbox | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| suse_bugzilla | https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24 | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| suse_bugzilla | https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| suse_bugzilla | https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21 | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| suse_bugzilla | https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| suse_bugzilla | https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| suse_bugzilla | https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66 | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| suse_bugzilla | https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| suse_bugzilla | https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2021-47194 | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2274615 | https://bugzilla.suse.com/show_bug.cgi?id=1222829 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024041035-CVE-2021-47194-51cd@gregkh/T | https://bugzilla.redhat.com/show_bug.cgi?id=2274615 |
| ubuntu | https://git.kernel.org/linus/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 (5.16-rc2) | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24 | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21 | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66 | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://www.cve.org/CVERecord?id=CVE-2021-47194 | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2021-47194 | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2021-47194 | https://ubuntu.com/security/CVE-2021-47194 |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2021-47194 | https://ubuntu.com/security/CVE-2021-47194 |
| cve_search |  | https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24 |
| cve_search |  | https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc |
| cve_search |  | https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21 |
| cve_search |  | https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec |
| cve_search |  | https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 |
| cve_search |  | https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66 |
| cve_search |  | https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd |
| cve_search |  | https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec |  |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47194 | https://ubuntu.com/security/CVE-2021-47194 |

</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://git.kernel.org/stable/c/0738cdb636c21ab552eaecf905efa4a6070e3ebc |  | nvd |
|  |  | https://git.kernel.org/stable/c/4e458abbb4a523f1413bfe15c079cf4e24c15b21 |  | nvd |
|  |  | https://git.kernel.org/stable/c/52affc201fc22a1ab9a59ef0ed641a9adfcb8d13 |  | nvd |
|  |  | https://git.kernel.org/stable/c/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 |  | nvd |
|  |  | https://git.kernel.org/stable/c/5a9b671c8d74a3e1b999e7a0c7f366079bcc93dd |  | nvd |
|  |  | https://git.kernel.org/stable/c/7b97b5776daa0b39dbdadfea176f9cc0646d4a66 |  | nvd |
|  |  | https://git.kernel.org/stable/c/8f06bb8c216bcd172394f61e557727e691b4cb24 |  | nvd |
|  |  | https://git.kernel.org/stable/c/b8a045e2a9b234cfbc06cf36923886164358ddec |  | nvd |
| linux |  | https://git.kernel.org/linus/563fbefed46ae4c1f70cffb8eb54c02df480b2c2 | https://git.kernel.org/linus/ac800140c20e7ae51117e71289065bedd4930fc2 | ubuntu |

</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:cfg80211: call cfg80211_stop_ap when switch from P2P_GO typeIf the userspace tools switch from NL80211_IFTYPE_P2P_GO toNL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), itdoes not call the cleanup cfg80211_stop_ap(), this leads to theinitialization of in-use data. For example, this path re-init thesdata->assigned_chanctx_list while it is still an element ofassigned_vifs list, and makes that linked list corrupt. 
 openEuler评分：
  7.8
 Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
 受影响版本排查(受影响/不受影响)：
  1.openEuler-20.03-LTS-SP1(4.19.90):受影响
2.openEuler-20.03-LTS-SP4(4.19.90):受影响
3.openEuler-22.03-LTS(5.10.0):不受影响
4.openEuler-22.03-LTS-SP1(5.10.0):不受影响
5.openEuler-22.03-LTS-SP2(5.10.0):不受影响
6.openEuler-22.03-LTS-SP3(5.10.0):不受影响
7.master(6.1.0):不受影响
8.openEuler-22.03-LTS-Next(5.10.0):不受影响
9.openEuler-24.03-LTS:不受影响
10.openEuler-24.03-LTS-Next: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-SP4(4.19.90):否
3.openEuler-22.03-LTS(5.10.0):否
4.openEuler-22.03-LTS-SP1(5.10.0):否
5.openEuler-22.03-LTS-SP2(5.10.0):否
6.openEuler-22.03-LTS-SP3(5.10.0):否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next(5.10.0):否
9.openEuler-24.03-LTS:否
10.openEuler-24.03-LTS-Next:否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-1535

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