CVE-2021-47006

一、漏洞信息
 漏洞编号：[CVE-2021-47006](https://nvd.nist.gov/vuln/detail/CVE-2021-47006)
 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 V2.0分值：
 BaseScore：0.0 Low
 Vector：CVSS：2.0/
 漏洞简述：
 In the Linux kernel, the following vulnerability has been resolved:ARM: 9064/1: hw_breakpoint: Do not directly check the event s overflow_handler hookThe commit 1879445dfa7b ( perf/core: Set event s default::overflow_handler() ) set a default event->overflow_handler inperf_event_alloc(), and replace the check event->overflow_handler withis_default_overflow_handler(), but one is missing.Currently, the bp->overflow_handler can not be NULL. As a result,enable_single_step() is always not invoked.Comments from Zhen Lei: https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/
 漏洞公开时间：2024-02-28 17:15:38
 漏洞创建时间：2024-02-29 03:39:49
 漏洞详情参考链接：
 https://nvd.nist.gov/vuln/detail/CVE-2021-47006
<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/3ed8832aeaa9a37b0fc386bb72ff604352567c80 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25 |  |
| 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6 |  |
| suse_bugzilla | http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47006 | https://bugzilla.suse.com/show_bug.cgi?id=1220751 |
| suse_bugzilla | https://www.cve.org/CVERecord?id=CVE-2021-47006 | https://bugzilla.suse.com/show_bug.cgi?id=1220751 |
| suse_bugzilla | https://bugzilla.redhat.com/show_bug.cgi?id=2266857 | https://bugzilla.suse.com/show_bug.cgi?id=1220751 |
| suse_bugzilla | https://lore.kernel.org/linux-cve-announce/2024022829-CVE-2021-47006-3312@gregkh/T/#u | https://bugzilla.suse.com/show_bug.cgi?id=1220751 |
| suse_bugzilla | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a506bd575629 | https://bugzilla.suse.com/show_bug.cgi?id=1220751 |
| redhat_bugzilla | https://lore.kernel.org/linux-cve-announce/2024022829-CVE-2021-47006-3312@gregkh/T/#u | https://bugzilla.redhat.com/show_bug.cgi?id=2266857 |
| snyk | https://github.com/torvalds/linux/commit/a506bd5756290821a4314f502b4bafc2afcf5260 | https://security.snyk.io/vuln/SNYK-UNMANAGED-TORVALDSLINUX-6354170 |

</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/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a506bd575629 |  | suse_bugzilla |
|  |  | https://github.com/torvalds/linux/commit/a506bd5756290821a4314f502b4bafc2afcf5260 |  | snyk |

</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:ARM: 9064/1: hw_breakpoint: Do not directly check the event s overflow_handler hookThe commit 1879445dfa7b ( perf/core: Set event s default::overflow_handler() ) set a default event->overflow_handler inperf_event_alloc(), and replace the check event->overflow_handler withis_default_overflow_handler(), but one is missing.Currently, the bp->overflow_handler can not be NULL. As a result,enable_single_step() is always not invoked.Comments from Zhen Lei: https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/  
 openEuler评分：
  4.4
 Vector：CVSS：2.0/AV:L/AC:L/PR:H/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-20.03-LTS-SP1(4.19.90):受影响
2.openEuler-20.03-LTS-SP4: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: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

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: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:否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next(5.10.0):否
9.openEuler-24.03-LTS:否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-1346

@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.master(6.1.0):
2.openEuler-20.03-LTS-SP1(4.19.90):
3.openEuler-20.03-LTS-SP4(4.19.90):
4.openEuler-22.03-LTS(5.10.0):
5.openEuler-22.03-LTS-Next(5.10.0):
6.openEuler-22.03-LTS-SP1(5.10.0):
7.openEuler-22.03-LTS-SP2(5.10.0):
8.openEuler-22.03-LTS-SP3(5.10.0):

修复是否涉及abi变化(是/否)：
1.master(6.1.0):
2.openEuler-20.03-LTS-SP1(4.19.90):
3.openEuler-20.03-LTS-SP4(4.19.90):
4.openEuler-22.03-LTS(5.10.0):
5.openEuler-22.03-LTS-Next(5.10.0):
6.openEuler-22.03-LTS-SP1(5.10.0):
7.openEuler-22.03-LTS-SP2(5.10.0):
8.openEuler-22.03-LTS-SP3(5.10.0):

-----------------------------------------------------------------------
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-2021-47006</td><td>None</td><td>None</td><td><a href=https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25>https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25</a> <a href=https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb>https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb</a> <a href=https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac>https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac</a> <a href=https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6>https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6</a> <a href=https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de>https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de</a> <a href=https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80>https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80</a> <a href=https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366>https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366</a> <a href=https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260>https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260</a></td></tr><tr><td>https://ubuntu.com/security/CVE-2021-47006</td><td></td><td></td><td></td></tr><tr><td rowspan="1">https://www.opencve.io/cve/CVE-2021-47006</td><td>None</td><td>None</td><td><a href=https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25>https://git.kernel.org/stable/c/dabe299425b1a53a69461fed7ac8922ea6733a25</a> <a href=https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb>https://git.kernel.org/stable/c/a9938d6d78a238d6ab8de57a4d3dcf77adceb9bb</a> <a href=https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac>https://git.kernel.org/stable/c/555a70f7fff03bd669123487905c47ae27dbdaac</a> <a href=https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6>https://git.kernel.org/stable/c/ed1f67465327cec4457bb988775245b199da86e6</a> <a href=https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de>https://git.kernel.org/stable/c/630146203108bf6b8934eec0dfdb3e46dcb917de</a> <a href=https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80>https://git.kernel.org/stable/c/3ed8832aeaa9a37b0fc386bb72ff604352567c80</a> <a href=https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366>https://git.kernel.org/stable/c/7eeacc6728c5478e3c01bc82a1f08958eaa12366</a> <a href=https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260>https://git.kernel.org/stable/c/a506bd5756290821a4314f502b4bafc2afcf5260</a></td></tr><tr><td>https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2021-47006</td><td></td><td></td><td></td></tr><tr><td rowspan="1">https://security-tracker.debian.org/tracker/CVE-2021-47006</td><td>None</td><td>None</td><td><a href=https://git.kernel.org/linus/a506bd5756290821a4314f502b4bafc2afcf5260>https://git.kernel.org/linus/a506bd5756290821a4314f502b4bafc2afcf5260</a></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

CVE-2021-47006

影响性分析说明：
In the Linux kernel, the following vulnerability has been resolved:

ARM: 9064/1: hw_breakpoint: Do not directly check the event's overflow_handler hook

The commit 1879445dfa7b ("perf/core: Set event's default
::overflow_handler()") set a default event->overflow_handler in
perf_event_alloc(), and replace the check event->overflow_handler with
is_default_overflow_handler(), but one is missing.

Currently, the bp->overflow_handler can not be NULL. As a result,
enable_single_step() is always not invoked.

Comments from Zhen Lei:

https://patchwork.kernel.org/project/linux-arm-kernel/patch/20210207105934.2001-1-thunder.leizhen@huawei.com/

openEuler评分:(评分和向量)
4.4
CVSS:3.1/AV:L/AC:L/PR:H/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-20.03-LTS-SP1(4.19.90):受影响
2.openEuler-20.03-LTS-SP4:受影响
3.openEuler-22.03-LTS:不受影响
4.openEuler-22.03-LTS-SP1:不受影响
5.openEuler-22.03-LTS-SP2:不受影响
6.openEuler-22.03-LTS-SP3:不受影响
7.master(6.1.0):不受影响
8.openEuler-22.03-LTS-Next:不受影响
9.openEuler-24.03-LTS: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:否
3.openEuler-22.03-LTS:否
4.openEuler-22.03-LTS-SP1:否
5.openEuler-22.03-LTS-SP2:否
6.openEuler-22.03-LTS-SP3:否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next:否
9.openEuler-24.03-LTS:否

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