CVE-2022-49770

一、漏洞信息
漏洞编号：CVE-2022-49770
漏洞归属组件：kernel
漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.4.0,6.6.0
CVSS V3.0分值：
BaseScore：N/A None
Vector：CVSS：3.0/
漏洞简述：
In the Linux kernel, the following vulnerability has been resolved:ceph: avoid putting the realm twice when decoding snaps failsWhen decoding the snaps fails it maybe leaving the first_realm and realm pointing to the same snaprealm memory. And then it llput it twice and could cause random use-after-free, BUG_ON, etcissues.
漏洞公开时间：2025-05-01 23:15:59
漏洞创建时间：2025-05-02 01:42:31
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2022-49770

更多参考(点击展开)

参考来源	参考链接	来源链接
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/044bc6d3c2c0e9090b0841e7b723875756534b45
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/274e4c79a3a2a24fba7cfe0e41113f1138785c37
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2f6e2de3a5289004650118b61f138fe7c28e1905
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/51884d153f7ec85e18d607b2467820a90e0f4359
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cb7495fe957526555782ce0723f79ce92a6db22e
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fd879c83e87735ab8f00ef7755752cf0cbae24b2
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-49770	https://bugzilla.suse.com/show_bug.cgi?id=1242597
suse_bugzilla	https://www.cve.org/CVERecord?id=CVE-2022-49770	https://bugzilla.suse.com/show_bug.cgi?id=1242597
suse_bugzilla	https://git.kernel.org/stable/c/044bc6d3c2c0e9090b0841e7b723875756534b45	https://bugzilla.suse.com/show_bug.cgi?id=1242597
suse_bugzilla	https://git.kernel.org/stable/c/274e4c79a3a2a24fba7cfe0e41113f1138785c37	https://bugzilla.suse.com/show_bug.cgi?id=1242597
suse_bugzilla	https://git.kernel.org/stable/c/2f6e2de3a5289004650118b61f138fe7c28e1905	https://bugzilla.suse.com/show_bug.cgi?id=1242597
suse_bugzilla	https://git.kernel.org/stable/c/51884d153f7ec85e18d607b2467820a90e0f4359	https://bugzilla.suse.com/show_bug.cgi?id=1242597
suse_bugzilla	https://git.kernel.org/stable/c/cb7495fe957526555782ce0723f79ce92a6db22e	https://bugzilla.suse.com/show_bug.cgi?id=1242597
suse_bugzilla	https://git.kernel.org/stable/c/fd879c83e87735ab8f00ef7755752cf0cbae24b2	https://bugzilla.suse.com/show_bug.cgi?id=1242597
suse_bugzilla	https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2022/CVE-2022-49770.mbox	https://bugzilla.suse.com/show_bug.cgi?id=1242597
suse_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2363493	https://bugzilla.suse.com/show_bug.cgi?id=1242597
anolis		https://anas.openanolis.cn/cves/detail/CVE-2022-49770

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：

详情(点击展开)

无

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:ceph: avoid putting the realm twice when decoding snaps failsWhen decoding the snaps fails it maybe leaving the 'first_realm'and 'realm' pointing to the same snaprealm memory. And then it'llput it twice and could cause random use-after-free, BUG_ON, etcissues.The Linux kernel CVE team has assigned CVE-2022-49770 to this issue.
openEuler评分：
5.5
Vector：CVSS：3.0/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-20.03-LTS-SP4(4.19.90):受影响
2.master(6.6.0):不受影响
3.openEuler-22.03-LTS-SP3(5.10.0):不受影响
4.openEuler-22.03-LTS-SP4(5.10.0):不受影响
5.openEuler-24.03-LTS(6.6.0):不受影响
6.openEuler-24.03-LTS-Next(6.6.0):不受影响
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响
8.openEuler-24.03-LTS-SP2(6.6.0):不受影响

修复是否涉及abi变化(是/否)：
1.master(6.6.0):否
2.openEuler-20.03-LTS-SP4(4.19.90):否
3.openEuler-22.03-LTS-SP3(5.10.0):否
4.openEuler-22.03-LTS-SP4(5.10.0):否
5.openEuler-24.03-LTS(6.6.0):否
6.openEuler-24.03-LTS-Next(6.6.0):否
7.openEuler-24.03-LTS-SP1(6.6.0):否
8.openEuler-24.03-LTS-SP2(6.6.0):否

原因说明：
1.openEuler-20.03-LTS-SP4(4.19.90):正常修复
2.master(6.6.0):不受影响-漏洞代码不能被攻击者触发
3.openEuler-22.03-LTS-SP3(5.10.0):不受影响-漏洞代码不能被攻击者触发
4.openEuler-22.03-LTS-SP4(5.10.0):不受影响-漏洞代码不能被攻击者触发
5.openEuler-24.03-LTS(6.6.0):不受影响-漏洞代码不能被攻击者触发
6.openEuler-24.03-LTS-Next(6.6.0):不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1(6.6.0):不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP2(6.6.0):不受影响-漏洞代码不能被攻击者触发

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**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;**
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************************************************************************
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(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3(5.10.0):
4.openEuler-22.03-LTS-SP4(5.10.0):
5.openEuler-24.03-LTS(6.6.0):
6.openEuler-24.03-LTS-Next(6.6.0):
7.openEuler-24.03-LTS-SP1(6.6.0):
8.openEuler-24.03-LTS-SP2(6.6.0):

修复是否涉及abi变化(是/否)：
1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3(5.10.0):
4.openEuler-22.03-LTS-SP4(5.10.0):
5.openEuler-24.03-LTS(6.6.0):
6.openEuler-24.03-LTS-Next(6.6.0):
7.openEuler-24.03-LTS-SP1(6.6.0):
8.openEuler-24.03-LTS-SP2(6.6.0):

原因说明：
1.master(6.6.0):
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3(5.10.0):
4.openEuler-22.03-LTS-SP4(5.10.0):
5.openEuler-24.03-LTS(6.6.0):
6.openEuler-24.03-LTS-Next(6.6.0):
7.openEuler-24.03-LTS-SP1(6.6.0):
8.openEuler-24.03-LTS-SP2(6.6.0):

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

参考网址	关联pr	状态	补丁链接
https://nvd.nist.gov/vuln/detail/CVE-2022-49770	None	None	https://git.kernel.org/stable/c/cb7495fe957526555782ce0723f79ce92a6db22e https://git.kernel.org/stable/c/fd879c83e87735ab8f00ef7755752cf0cbae24b2 https://git.kernel.org/stable/c/044bc6d3c2c0e9090b0841e7b723875756534b45 https://git.kernel.org/stable/c/51884d153f7ec85e18d607b2467820a90e0f4359 https://git.kernel.org/stable/c/274e4c79a3a2a24fba7cfe0e41113f1138785c37 https://git.kernel.org/stable/c/2f6e2de3a5289004650118b61f138fe7c28e1905
https://www.opencve.io/cve/CVE-2022-49770	None	None	https://git.kernel.org/stable/c/cb7495fe957526555782ce0723f79ce92a6db22e https://git.kernel.org/stable/c/fd879c83e87735ab8f00ef7755752cf0cbae24b2 https://git.kernel.org/stable/c/044bc6d3c2c0e9090b0841e7b723875756534b45 https://git.kernel.org/stable/c/51884d153f7ec85e18d607b2467820a90e0f4359 https://git.kernel.org/stable/c/274e4c79a3a2a24fba7cfe0e41113f1138785c37 https://git.kernel.org/stable/c/2f6e2de3a5289004650118b61f138fe7c28e1905
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2022-49770
https://security-tracker.debian.org/tracker/CVE-2022-49770	None	None	https://git.kernel.org/linus/51884d153f7ec85e18d607b2467820a90e0f4359
http://www.cnnvd.org.cn/web/vulnerability/queryLds.tag?qcvCnnvdid=CVE-2022-49770

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。
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-2022-49770

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

ceph: avoid putting the realm twice when decoding snaps fails

When decoding the snaps fails it maybe leaving the 'first_realm'
and 'realm' pointing to the same snaprealm memory. And then it'll
put it twice and could cause random use-after-free, BUG_ON, etc
issues.

The Linux kernel CVE team has assigned CVE-2022-49770 to this issue.

openEuler评分:(评分和向量)
5.5
CVSS:3.1/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.master(6.1.0):不受影响
2.openEuler-20.03-LTS-SP4:受影响
3.openEuler-22.03-LTS-SP3:不受影响
4.openEuler-22.03-LTS-SP4:不受影响
5.openEuler-24.03-LTS:不受影响
6.openEuler-24.03-LTS-Next:不受影响
7.openEuler-24.03-LTS-SP1:不受影响
8.openEuler-24.03-LTS-SP2:不受影响

修复是否涉及abi变化(是/否)：
1.master(6.1.0):否
2.openEuler-20.03-LTS-SP4:否
3.openEuler-22.03-LTS-SP3:否
4.openEuler-22.03-LTS-SP4:否
5.openEuler-24.03-LTS:否
6.openEuler-24.03-LTS-Next:否
7.openEuler-24.03-LTS-SP1:否
8.openEuler-24.03-LTS-SP2:否

原因说明：
1.master(23.08.5):不受影响-漏洞代码不能被攻击者触发
2.openEuler-20.03-LTS-SP4:正常修复
3.openEuler-22.03-LTS-SP3:不受影响-漏洞代码不能被攻击者触发
4.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不能被攻击者触发
5.openEuler-24.03-LTS:不受影响-漏洞代码不能被攻击者触发
6.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-SP1:不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP2:不受影响-漏洞代码不能被攻击者触发

@CTC-XiboWang 经过 cve-manager 解析, 已分析的内容如下表所示:
| 状态  | 分析项目 | 内容 |
|:--:|:--:|---------|
|已分析|1.影响性分析说明|In the Linux kernel, the following vulnerability has been resolved:ceph: avoid putting the realm twice when decoding snaps failsWhen decoding the snaps fails it maybe leaving the &#39;first_realm&#39;and &#39;realm&#39; pointing to the same snaprealm memory. And then it&#39;llput it twice and could cause random use-after-free, BUG_ON, etcissues.The Linux kernel CVE team has assigned CVE-2022-49770 to this issue.|
|已分析|2.openEulerScore|5.5|
|已分析|3.openEulerVector|AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H|
|已分析|4.受影响版本排查|openEuler-20.03-LTS-SP4:受影响,master:不受影响,openEuler-22.03-LTS-SP3:不受影响,openEuler-22.03-LTS-SP4:不受影响,openEuler-24.03-LTS:不受影响,openEuler-24.03-LTS-Next:不受影响,openEuler-24.03-LTS-SP1:不受影响,openEuler-24.03-LTS-SP2:不受影响|
|已分析|5.是否涉及abi变化|master:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS-SP3:否,openEuler-22.03-LTS-SP4:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-Next:否,openEuler-24.03-LTS-SP1:否,openEuler-24.03-LTS-SP2:否|
|已分析|6.原因说明|openEuler-20.03-LTS-SP4:正常修复,master:不受影响-漏洞代码不能被攻击者触发,openEuler-22.03-LTS-SP3:不受影响-漏洞代码不能被攻击者触发,openEuler-22.03-LTS-SP4:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-SP1:不受影响-漏洞代码不能被攻击者触发,openEuler-24.03-LTS-SP2:不受影响-漏洞代码不能被攻击者触发|

**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.**

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