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一、漏洞信息
漏洞编号：CVE-2022-33744
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
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：
Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests memory pages.
漏洞公开时间：2022-07-05 21:15:00
漏洞创建时间：2022-07-08 14:31:24
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2022-33744
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：
二、漏洞分析结构反馈
影响性分析说明：
Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests memory pages.
openEuler评分：
5.7
Vector：CVSS：3.0/AV:A/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-20.03-LTS-SP1(4.19.90):受影响
3.openEuler-20.03-LTS-SP3(4.19.90):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-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-2022-1774
openeuler-ci-bot
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Hi yanglijin, welcome to the openEuler Community.
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@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
openeuler-ci-bot
拥有者
| 参考网址 | 关联pr | 状态 | 补丁链接 |
|---|---|---|---|
| https://ubuntu.com/security/CVE-2022-33744 | |||
| https://nvd.nist.gov/vuln/detail/CVE-2022-33744 | |||
| https://security-tracker.debian.org/tracker/CVE-2022-33744 | |||
| https://bugzilla.suse.com/show_bug.cgi?id=CVE-2022-33744 |
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
openeuler-ci-bot
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@jinjin CVE信息从NVD同步成功, 稍后请重新加载页面.
CVE-2022-33744
I5G5TV
影响性分析说明：
Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests' memory pages.
openEuler评分:(评分和向量)
5.7
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
openeuler-ci-bot
拥有者
@郭梦琪 3.受影响版本排查(受影响/不受影响)=> 没有分析或未按正确格式填写:openEuler-20.03-LTS-SP1:,openEuler-20.03-LTS-SP3:,openEuler-22.03-LTS:
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):受影响
3.openEuler-20.03-LTS-SP3(4.19.194):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-SP3(4.19.194):否
openeuler-ci-bot
拥有者
@Xie XiuQi 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态 | 需分析 | 内容 |
|---|---|---|
| 已分析 | 1.影响性分析说明 | Arm guests can cause Dom0 DoS via PV devices When mapping pages of guests on Arm, dom0 is using an rbtree to keep track of the foreign mappings. Updating of that rbtree is not always done completely with the related lock held, resulting in a small race window, which can be used by unprivileged guests via PV devices to cause inconsistencies of the rbtree. These inconsistencies can lead to Denial of Service (DoS) of dom0, e.g. by causing crashes or the inability to perform further mappings of other guests memory pages. |
| 已分析 | 2.openEulerScore | 5.7 |
| 已分析 | 2.openEulerVector | AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| 已分析 | 3.受影响版本排查 | openEuler-22.03-LTS:受影响,openEuler-20.03-LTS-SP1:受影响,openEuler-20.03-LTS-SP3:受影响 |
| 已分析 | 4.修复是否涉及abi变化 | openEuler-22.03-LTS:否,openEuler-20.03-LTS-SP1:否,openEuler-20.03-LTS-SP3:否 |
请确认分析内容的准确性, 确认无误后, 您可以进行后续步骤, 否则您可以继续分析.
openeuler-ci-bot
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@liujingang09 ,@yanxiaobing2020 ,@zhujianwei001 ,@gwei3 ,@mdche 经过 cve-manager 解析 openEuler评分 已改变 需要您及时进行审核,以便maintainer进行后续操作.
openeuler-ci-bot
拥有者
@liujingang09 ,@yanxiaobing2020 ,@zhujianwei001 ,@gwei3 ,@mdche 经过 cve-manager 解析 openEuler评分 已改变 需要您及时进行审核,以便maintainer进行后续操作.
openeuler-ci-bot
拥有者
@liujingang09 ,@yanxiaobing2020 ,@zhujianwei001 ,@gwei3 ,@mdche 经过 cve-manager 解析 openEuler评分 已改变 需要您及时进行审核,以便maintainer进行后续操作.
/approve
openeuler-ci-bot
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@Xie XiuQi you submit issue score audit success(approved by gwei3),You can proceed to the next step!
/approve
openeuler-ci-bot
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@gwei3 你已审核模板内容,cve-manager 将关闭issue!
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