CVE-2021-47121

一、漏洞信息
漏洞编号：CVE-2021-47121
漏洞归属组件：kernel
漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8,6.4.0
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:net: caif: fix memory leak in cfusbl_device_notifyIn case of caif_enroll_dev() fail, allocatedlink_support won t be assigned to the correspondingstructure. So simply free allocated pointer in caseof error.
漏洞公开时间：2024-03-16 05:15:07
漏洞创建时间：2024-03-16 06:46:02
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2021-47121

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/46403c1f80b0d3f937ff9c4f5edc63bb64bc5051
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4d94f530cd24c85aede6e72b8923f371b45d6886
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7f5d86669fa4d485523ddb1d212e0a2d90bd62bb
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/81afc61cb6e2b553f2c5f992fa79e0ae73857141
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9ea0ab48e755d8f29fe89eb235fb86176fdb597f
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/cc302e30a504e6b60a9ac8df7988646f46cd0294
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dde8686985ec24d6b00487080a906609bd613ea1
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e8b37f5009ea7095529790f022859711e6939c76
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47121	https://bugzilla.suse.com/show_bug.cgi?id=1221535
suse_bugzilla	https://www.cve.org/CVERecord?id=CVE-2021-47121	https://bugzilla.suse.com/show_bug.cgi?id=1221535
suse_bugzilla	https://git.kernel.org/stable/c/46403c1f80b0d3f937ff9c4f5edc63bb64bc5051	https://bugzilla.suse.com/show_bug.cgi?id=1221535
suse_bugzilla	https://git.kernel.org/stable/c/4d94f530cd24c85aede6e72b8923f371b45d6886	https://bugzilla.suse.com/show_bug.cgi?id=1221535
suse_bugzilla	https://git.kernel.org/stable/c/7f5d86669fa4d485523ddb1d212e0a2d90bd62bb	https://bugzilla.suse.com/show_bug.cgi?id=1221535
suse_bugzilla	https://git.kernel.org/stable/c/81afc61cb6e2b553f2c5f992fa79e0ae73857141	https://bugzilla.suse.com/show_bug.cgi?id=1221535
suse_bugzilla	https://git.kernel.org/stable/c/9ea0ab48e755d8f29fe89eb235fb86176fdb597f	https://bugzilla.suse.com/show_bug.cgi?id=1221535
suse_bugzilla	https://git.kernel.org/stable/c/cc302e30a504e6b60a9ac8df7988646f46cd0294	https://bugzilla.suse.com/show_bug.cgi?id=1221535
suse_bugzilla	https://git.kernel.org/stable/c/dde8686985ec24d6b00487080a906609bd613ea1	https://bugzilla.suse.com/show_bug.cgi?id=1221535
suse_bugzilla	https://git.kernel.org/stable/c/e8b37f5009ea7095529790f022859711e6939c76	https://bugzilla.suse.com/show_bug.cgi?id=1221535
suse_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2269848	https://bugzilla.suse.com/show_bug.cgi?id=1221535
redhat_bugzilla	https://lore.kernel.org/linux-cve-announce/2024031510-CVE-2021-47121-13c1@gregkh/T/#u	https://bugzilla.redhat.com/show_bug.cgi?id=2269848
ubuntu	https://git.kernel.org/linus/7f5d86669fa4d485523ddb1d212e0a2d90bd62bb (5.13-rc5)	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://git.kernel.org/stable/c/cc302e30a504e6b60a9ac8df7988646f46cd0294	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://git.kernel.org/stable/c/81afc61cb6e2b553f2c5f992fa79e0ae73857141	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://git.kernel.org/stable/c/e8b37f5009ea7095529790f022859711e6939c76	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://git.kernel.org/stable/c/9ea0ab48e755d8f29fe89eb235fb86176fdb597f	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://git.kernel.org/stable/c/4d94f530cd24c85aede6e72b8923f371b45d6886	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://git.kernel.org/stable/c/46403c1f80b0d3f937ff9c4f5edc63bb64bc5051	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://git.kernel.org/stable/c/dde8686985ec24d6b00487080a906609bd613ea1	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://git.kernel.org/stable/c/7f5d86669fa4d485523ddb1d212e0a2d90bd62bb	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://www.cve.org/CVERecord?id=CVE-2021-47121	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://nvd.nist.gov/vuln/detail/CVE-2021-47121	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://launchpad.net/bugs/cve/CVE-2021-47121	https://ubuntu.com/security/CVE-2021-47121
ubuntu	https://security-tracker.debian.org/tracker/CVE-2021-47121	https://ubuntu.com/security/CVE-2021-47121
cve_search		https://git.kernel.org/stable/c/cc302e30a504e6b60a9ac8df7988646f46cd0294
cve_search		https://git.kernel.org/stable/c/81afc61cb6e2b553f2c5f992fa79e0ae73857141
cve_search		https://git.kernel.org/stable/c/e8b37f5009ea7095529790f022859711e6939c76
cve_search		https://git.kernel.org/stable/c/9ea0ab48e755d8f29fe89eb235fb86176fdb597f
cve_search		https://git.kernel.org/stable/c/4d94f530cd24c85aede6e72b8923f371b45d6886
cve_search		https://git.kernel.org/stable/c/46403c1f80b0d3f937ff9c4f5edc63bb64bc5051
cve_search		https://git.kernel.org/stable/c/dde8686985ec24d6b00487080a906609bd613ea1
cve_search		https://git.kernel.org/stable/c/7f5d86669fa4d485523ddb1d212e0a2d90bd62bb
ubuntu	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47121	https://ubuntu.com/security/CVE-2021-47121

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
linux		https://git.kernel.org/linus/7f5d86669fa4d485523ddb1d212e0a2d90bd62bb	https://git.kernel.org/linus/7ad65bf68d705b445ef10b77ab50dab22be185ee	ubuntu

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:net: caif: fix memory leak in cfusbl_device_notifyIn case of caif_enroll_dev() fail, allocatedlink_support won t be assigned to the correspondingstructure. So simply free allocated pointer in caseof error.
openEuler评分：
4.7
Vector：CVSS：2.0/AV:L/AC:H/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-SP1(4.19.90):受影响
2.openEuler-20.03-LTS-SP4(4.19.90):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(5.10.0):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
10.openEuler-24.03-LTS-Next: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(4.19.90):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(5.10.0):否
7.master(6.1.0):否
8.openEuler-22.03-LTS-Next(5.10.0):否
9.openEuler-24.03-LTS:否
10.openEuler-24.03-LTS-Next:否

三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2024-1535

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.

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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))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):
9.openEuler-24.03-LTS:

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):
9.openEuler-24.03-LTS:

-----------------------------------------------------------------------
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-2021-47121	None	None	https://git.kernel.org/stable/c/9ea0ab48e755d8f29fe89eb235fb86176fdb597f https://git.kernel.org/stable/c/4d94f530cd24c85aede6e72b8923f371b45d6886 https://git.kernel.org/stable/c/dde8686985ec24d6b00487080a906609bd613ea1 https://git.kernel.org/stable/c/46403c1f80b0d3f937ff9c4f5edc63bb64bc5051 https://git.kernel.org/stable/c/e8b37f5009ea7095529790f022859711e6939c76 https://git.kernel.org/stable/c/81afc61cb6e2b553f2c5f992fa79e0ae73857141 https://git.kernel.org/stable/c/7f5d86669fa4d485523ddb1d212e0a2d90bd62bb https://git.kernel.org/stable/c/cc302e30a504e6b60a9ac8df7988646f46cd0294
https://ubuntu.com/security/CVE-2021-47121	None	None	https://discourse.ubuntu.com/c/ubuntu-pro
https://www.opencve.io/cve/CVE-2021-47121	None	None	https://git.kernel.org/stable/c/9ea0ab48e755d8f29fe89eb235fb86176fdb597f https://git.kernel.org/stable/c/4d94f530cd24c85aede6e72b8923f371b45d6886 https://git.kernel.org/stable/c/dde8686985ec24d6b00487080a906609bd613ea1 https://git.kernel.org/stable/c/46403c1f80b0d3f937ff9c4f5edc63bb64bc5051 https://git.kernel.org/stable/c/e8b37f5009ea7095529790f022859711e6939c76 https://git.kernel.org/stable/c/81afc61cb6e2b553f2c5f992fa79e0ae73857141 https://git.kernel.org/stable/c/7f5d86669fa4d485523ddb1d212e0a2d90bd62bb https://git.kernel.org/stable/c/cc302e30a504e6b60a9ac8df7988646f46cd0294
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2021-47121
https://security-tracker.debian.org/tracker/CVE-2021-47121	None	None	https://git.kernel.org/linus/7f5d86669fa4d485523ddb1d212e0a2d90bd62bb

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-2021-47121

影响性分析说明：
Reserved.

openEuler评分:(评分和向量)
4.0
CVSS: 3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:N

CVE-2021-47121

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

net: caif: fix memory leak in cfusbl_device_notify

In case of caif_enroll_dev() fail, allocated
link_support won't be assigned to the corresponding
structure. So simply free allocated pointer in case
of error.

openEuler评分:(评分和向量)
4.7
CVSS:3.1/AV:L/AC:H/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-SP1: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
10.openEuler-24.03-LTS-Next: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
10.openEuler-24.03-LTS-Next:否

===========================================================

@sanglipeng 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|In the Linux kernel, the following vulnerability has been resolved:net: caif: fix memory leak in cfusbl_device_notifyIn case of caif_enroll_dev() fail, allocatedlink_support won't be assigned to the correspondingstructure. So simply free allocated pointer in caseof error.|
|已分析|2.openEulerScore|4.7|
|已分析|3.openEulerVector|AV:L/AC:H/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-SP1:受影响,openEuler-20.03-LTS-SP4:受影响,openEuler-22.03-LTS:不受影响,openEuler-22.03-LTS-SP1:不受影响,openEuler-22.03-LTS-SP2:不受影响,openEuler-22.03-LTS-SP3:不受影响,master:不受影响,openEuler-22.03-LTS-Next:不受影响,openEuler-24.03-LTS:不受影响,openEuler-24.03-LTS-Next:不受影响|
|已分析|5.修复是否涉及abi变化|openEuler-20.03-LTS-SP1:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS:否,openEuler-22.03-LTS-SP1:否,openEuler-22.03-LTS-SP2:否,openEuler-22.03-LTS-SP3:否,master:否,openEuler-22.03-LTS-Next:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-Next: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.**

CVE-2021-47121

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

net: caif: fix memory leak in cfusbl_device_notify

In case of caif_enroll_dev() fail, allocated
link_support won't be assigned to the corresponding
structure. So simply free allocated pointer in case
of error.

openEuler评分:(评分和向量)
4.7
CVSS:3.1/AV:L/AC:H/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-SP1: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
10.openEuler-24.03-LTS-Next: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
10.openEuler-24.03-LTS-Next:否

===========================================================

@sanglipeng 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|In the Linux kernel, the following vulnerability has been resolved:net: caif: fix memory leak in cfusbl_device_notifyIn case of caif_enroll_dev() fail, allocatedlink_support won't be assigned to the correspondingstructure. So simply free allocated pointer in caseof error.|
|已分析|2.openEulerScore|4.7|
|已分析|3.openEulerVector|AV:L/AC:H/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-SP1:受影响,openEuler-20.03-LTS-SP4:受影响,openEuler-22.03-LTS:不受影响,openEuler-22.03-LTS-SP1:不受影响,openEuler-22.03-LTS-SP2:不受影响,openEuler-22.03-LTS-SP3:不受影响,master:不受影响,openEuler-22.03-LTS-Next:不受影响,openEuler-24.03-LTS:不受影响,openEuler-24.03-LTS-Next:不受影响|
|已分析|5.修复是否涉及abi变化|openEuler-20.03-LTS-SP1:否,openEuler-20.03-LTS-SP4:否,openEuler-22.03-LTS:否,openEuler-22.03-LTS-SP1:否,openEuler-22.03-LTS-SP2:否,openEuler-22.03-LTS-SP3:否,master:否,openEuler-22.03-LTS-Next:否,openEuler-24.03-LTS:否,openEuler-24.03-LTS-Next:否|

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