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一、漏洞信息
漏洞编号：CVE-2022-1786
漏洞归属组件：kernel
漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,5.4.189,allversion
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：
A use-after-free flaw was found in the Linux kernel’s io_uring subsystem in the way a user sets up a ring with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw allows a local user to crash or escalate their privileges on the system.
漏洞公开时间：2022-06-02 22:15
漏洞创建时间：2022-05-25 09:28:41
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2022-1786
The vulnerability is confirmed to be able to lead to LPE. If your distro is
affected, please apply the patch as soon as possible.
Best,
Kyle Zeng
A kernel crash report:
[ 6.353149]
==================================================================
[ 6.353619] BUG: KASAN: double-free or invalid-free in
io_iopoll_complete+0x4e3/0x11a0
[ 6.354056]
[ 6.354160] CPU: 3 PID: 73 Comm: kworker/3:1 Not tainted 5.10.115+ #3
[ 6.354556] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996 | |
| ubuntu | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-1786 | |
| ubuntu | https://www.openwall.com/lists/oss-security/2022/05/24/4 | |
| ubuntu | https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=linux-5.10.y&id=29f077d070519a88a793fbc70f1e6484dc6d9e35 | |
| ubuntu | https://nvd.nist.gov/vuln/detail/CVE-2022-1786 | |
| ubuntu | https://launchpad.net/bugs/cve/CVE-2022-1786 | |
| ubuntu | https://security-tracker.debian.org/tracker/CVE-2022-1786 | |
| debian | https://security-tracker.debian.org/tracker/CVE-2022-1786 | |
| oracle | https://www.oracle.com/security-alerts/linuxbulletinapr2022.html | |
</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:
其它
漏洞补丁信息：
<details>
<summary>详情(点击展开)</summary>
无
</details>
二、漏洞分析结构反馈
影响性分析说明：
A use-after-free flaw was found in the Linux kernel’s io_uring subsystem in the way a user sets up a ring with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw allows a local user to crash or escalate their privileges on the system.
openEuler评分：
7.0
Vector：CVSS：3.0/AV:L/AC:H/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-22.03-LTS:受影响
2.openEuler-20.03-LTS-SP1(4.19.90):不受影响
3.openEuler-20.03-LTS-SP2(4.19.90):不受影响
4.openEuler-20.03-LTS-SP3(4.19.90):不受影响
修复是否涉及abi变化(是/否)：
1.openEuler-22.03-LTS:否
2.openEuler-20.03-LTS-SP1(4.19.90):否
3.openEuler-20.03-LTS-SP2(4.19.90):否
4.openEuler-20.03-LTS-SP3(4.19.90):否
三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2022-1714
@Xie XiuQi ,@YangYingliang ,@成坚 (CHENG Jian) ,@pi3orama ,@jiaoff
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(4.19.194):
3.openEuler-22.03-LTS(5.10.0):
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(4.19.194):
3.openEuler-22.03-LTS(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
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Hi openeuler-ci-bot, welcome to the openEuler Community.
I'm the Bot here serving you. You can find the instructions on how to interact with me at Here.
If you have any questions, please contact the SIG: Kernel, and any of the maintainers: @Xie XiuQi , @YangYingliang , @成坚 (CHENG Jian) , @pi3orama , @jiaoff
| 参考网址 | 关联pr | 状态 | 补丁链接 |
|---|---|---|---|
| https://bugzilla.suse.com/show_bug.cgi?id=CVE-2022-1786 | |||
| https://ubuntu.com/security/CVE-2022-1786 | |||
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2022-1786 | |||
| https://nvd.nist.gov/vuln/detail/CVE-2022-1786 | |||
| https://security-tracker.debian.org/tracker/CVE-2022-1786 |
说明：抱歉，当前工具暂未找到推荐补丁，请人工查找或者之后评论'/find-patch'尝试再次查找。
若人工查找到补丁，烦请在此issue下评论 '/report-patch 参考网址 补丁链接1,补丁链接2' 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
| 参考网址 | 关联pr | 状态 | 补丁链接 |
|---|---|---|---|
| https://bugzilla.suse.com/show_bug.cgi?id=CVE-2022-1786 | |||
| https://ubuntu.com/security/CVE-2022-1786 | |||
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2022-1786 | |||
| https://nvd.nist.gov/vuln/detail/CVE-2022-1786 | |||
| https://security-tracker.debian.org/tracker/CVE-2022-1786 |
说明：抱歉，当前工具暂未找到推荐补丁，请人工查找或者之后评论'/find-patch'尝试再次查找。
若人工查找到补丁，烦请在此issue下评论 '/report-patch 参考网址 补丁链接1,补丁链接2' 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
@zhengzengkai 请确认分支: openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3,openEuler-22.03-LTS 受影响/不受影响.
请确认分支信息是否填写完整,否则将无法关闭当前issue.
@zhengzengkai 请确认分支: openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP3,openEuler-22.03-LTS 受影响/不受影响.
请确认分支信息是否填写完整,否则将无法关闭当前issue.
CVE-2022-1786
I593SI
影响性分析说明：
A use-after-free flaw was found in the Linux kernel’s io_uring subsystem in the way a user sets up a ring with IORING_SETUP_IOPOLL with more than one task completing submissions on this ring. This flaw allows a local user to crash or escalate their privileges on the system.
openEuler评分:(评分和向量)
7.0
CVSS:3.1/AV:L/AC:H/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-22.03-LTS(5.10.0):受影响
2.openEuler-20.03-LTS-SP1(4.19.90):不受影响
3.openEuler-20.03-LTS-SP2(4.19.90):不受影响
4.openEuler-20.03-LTS-SP3(4.19.194):不受影响
修复是否涉及abi变化(是/否)：
1.openEuler-22.03-LTS(5.10.0):否
2.openEuler-20.03-LTS-SP1(4.19.90):否
3.openEuler-20.03-LTS-SP2(4.19.90):否
4.openEuler-20.03-LTS-SP3(4.19.194):否
opnEuler-20.03-LTS不涉及，此版本有io_uring，但是没有文件系统支持iopoll相关操作，因此此CVE涉及的场景不相关，因此不涉及
@liujingang09 ,@Yang.Li ,@yanxiaobing2020 ,@zhujianwei001 ,@guoxiaoqi ,@gwei3 ,@jinjin ,@mdche ,@tushenmei ,@zhangjianjun The CVE score needs to be reviewed (the review instruction /approve or /reject means agreement and rejection).
@Xie XiuQi you submit issue score audit success(approved by gwei3),You can proceed to the next step!
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