CVE-2022-49644

一、漏洞信息
漏洞编号：CVE-2022-49644
漏洞归属组件：kernel
漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.19,6.1.8,6.4.0,6.6.0
CVSS V3.0分值：
BaseScore：5.5 Medium
Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
漏洞简述：
In the Linux kernel, the following vulnerability has been resolved:drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector()If drm_connector_init fails, intel_connector_free will be called to takecare of proper free. So it is necessary to drop the refcount of portbefore intel_connector_free.(cherry picked from commit cea9ed611e85d36a05db52b6457bf584b7d969e2)
漏洞公开时间：2025-02-26 15:01:39
漏洞创建时间：2025-02-26 18:01:22
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2022-49644

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/505114dda5bbfd07f4ce9a2df5b7d8ef5f2a1218
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/592f3bad00b7e2a95a6fb7a4f9e742c061c9c3c1
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/72f231b9a88abcfac9f5ddaa1a0aacb3f9f87ba5
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/85144df9ff4652816448369de76897c57cbb1b93
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/a91522b4279bebb098106a19b91f82b9c3213be9
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2022-49644	https://bugzilla.suse.com/show_bug.cgi?id=1238235
suse_bugzilla	https://git.kernel.org/pub/scm/linux/security/vulns.git/plain/cve/published/2022/CVE-2022-49644.mbox	https://bugzilla.suse.com/show_bug.cgi?id=1238235
suse_bugzilla	https://git.kernel.org/stable/c/72f231b9a88abcfac9f5ddaa1a0aacb3f9f87ba5	https://bugzilla.suse.com/show_bug.cgi?id=1238235
suse_bugzilla	https://git.kernel.org/stable/c/592f3bad00b7e2a95a6fb7a4f9e742c061c9c3c1	https://bugzilla.suse.com/show_bug.cgi?id=1238235
suse_bugzilla	https://git.kernel.org/stable/c/505114dda5bbfd07f4ce9a2df5b7d8ef5f2a1218	https://bugzilla.suse.com/show_bug.cgi?id=1238235
suse_bugzilla	https://git.kernel.org/stable/c/a91522b4279bebb098106a19b91f82b9c3213be9	https://bugzilla.suse.com/show_bug.cgi?id=1238235
suse_bugzilla	https://git.kernel.org/stable/c/85144df9ff4652816448369de76897c57cbb1b93	https://bugzilla.suse.com/show_bug.cgi?id=1238235
suse_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2348280	https://bugzilla.suse.com/show_bug.cgi?id=1238235
redhat_bugzilla	https://lore.kernel.org/linux-cve-announce/2025022619-CVE-2022-49644-e3b0@gregkh/T	https://bugzilla.redhat.com/show_bug.cgi?id=2348280

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)

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/505114dda5bbfd07f4ce9a2df5b7d8ef5f2a1218		nvd
		https://git.kernel.org/stable/c/592f3bad00b7e2a95a6fb7a4f9e742c061c9c3c1		nvd
		https://git.kernel.org/stable/c/72f231b9a88abcfac9f5ddaa1a0aacb3f9f87ba5		nvd
		https://git.kernel.org/stable/c/85144df9ff4652816448369de76897c57cbb1b93		nvd
		https://git.kernel.org/stable/c/a91522b4279bebb098106a19b91f82b9c3213be9		nvd
linux_kernel	5.4.207	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=72f231b9a88abcfac9f5ddaa1a0aacb3f9f87ba5Issue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=091a4f91942a4396c67e5747f5cb38c6396d1fc5	linuxkernelcves
linux_kernel	5.10.132	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=592f3bad00b7e2a95a6fb7a4f9e742c061c9c3c1Issue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=091a4f91942a4396c67e5747f5cb38c6396d1fc5	linuxkernelcves
linux_kernel	5.15.56	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=505114dda5bbfd07f4ce9a2df5b7d8ef5f2a1218Issue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=091a4f91942a4396c67e5747f5cb38c6396d1fc5	linuxkernelcves
linux_kernel	5.18.13	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a91522b4279bebb098106a19b91f82b9c3213be9Issue	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=091a4f91942a4396c67e5747f5cb38c6396d1fc5	linuxkernelcves
linux_kernel	5.19	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=85144df9ff4652816448369de76897c57cbb1b93Please	https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=091a4f91942a4396c67e5747f5cb38c6396d1fc5	linuxkernelcves

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:drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector()If drm_connector_init fails, intel_connector_free will be called to takecare of proper free. So it is necessary to drop the refcount of portbefore intel_connector_free.(cherry picked from commit cea9ed611e85d36a05db52b6457bf584b7d969e2)
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

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

原因说明：
1.openEuler-20.03-LTS-SP4(4.19.90):不修复-超出修复范围
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

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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;**
**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), 原因说明)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:
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3:
4.openEuler-22.03-LTS-SP4:
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):

修复是否涉及abi变化(是/否)：
1.master:
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3:
4.openEuler-22.03-LTS-SP4:
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):

原因说明：
1.master:
2.openEuler-20.03-LTS-SP4(4.19.90):
3.openEuler-22.03-LTS-SP3:
4.openEuler-22.03-LTS-SP4:
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):

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-2022-49644
https://ubuntu.com/security/CVE-2022-49644
https://www.opencve.io/cve/CVE-2022-49644
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2022-49644
https://security-tracker.debian.org/tracker/CVE-2022-49644	None	None	https://git.kernel.org/linus/85144df9ff4652816448369de76897c57cbb1b93
http://www.cnnvd.org.cn/web/vulnerability/queryLds.tag?qcvCnnvdid=CVE-2022-49644

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-2022-49644

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

drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector()

If drm_connector_init fails, intel_connector_free will be called to take
care of proper free. So it is necessary to drop the refcount of port
before intel_connector_free.

(cherry picked from commit cea9ed611e85d36a05db52b6457bf584b7d969e2)

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

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

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:不修复-超出修复范围
4.openEuler-22.03-LTS-SP3:不受影响-漏洞代码不能被攻击者触发
5.openEuler-22.03-LTS-SP4:不受影响-漏洞代码不能被攻击者触发
6.openEuler-24.03-LTS:不受影响-漏洞代码不能被攻击者触发
7.openEuler-24.03-LTS-Next:不受影响-漏洞代码不能被攻击者触发
8.openEuler-24.03-LTS-SP1:不受影响-漏洞代码不能被攻击者触发

@sanglipeng 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:drm/i915: fix a possible refcount leak in intel_dp_add_mst_connector()If drm_connector_init fails, intel_connector_free will be called to takecare of proper free. So it is necessary to drop the refcount of portbefore intel_connector_free.(cherry picked from commit cea9ed611e85d36a05db52b6457bf584b7d969e2)|
|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|
|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|
|已分析|6.原因说明|openEuler-20.03-LTS-SP4:不修复-超出修复范围,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|

**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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