CVE-2021-47058

一、漏洞信息
漏洞编号：CVE-2021-47058
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:regmap: set debugfs_name to NULL after it is freedThere is a upstream commit cffa4b2122f5( regmap:debugfs:Fix a memory leak when calling regmap_attach_dev ) thatadds a if condition when create name for debugfs_name.With below function invoking logical, debugfs_name isfreed in regmap_debugfs_exit(), but it is not created againbecause of the if condition introduced by above commit.regmap_reinit_cache() regmap_debugfs_exit() ... regmap_debugfs_init()So, set debugfs_name to NULL after it is freed.
漏洞公开时间：2024-03-01 07:15:07
漏洞创建时间：2024-03-01 07:44:42
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2021-47058

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/2dc1554d5f0fdaf47cc5bea442b84b9226fea867
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47058	https://bugzilla.suse.com/show_bug.cgi?id=1220779
suse_bugzilla	https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6	https://bugzilla.suse.com/show_bug.cgi?id=1220779
suse_bugzilla	https://www.cve.org/CVERecord?id=CVE-2021-47058	https://bugzilla.suse.com/show_bug.cgi?id=1220779
suse_bugzilla	https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867	https://bugzilla.suse.com/show_bug.cgi?id=1220779
suse_bugzilla	https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a	https://bugzilla.suse.com/show_bug.cgi?id=1220779
suse_bugzilla	https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d	https://bugzilla.suse.com/show_bug.cgi?id=1220779
suse_bugzilla	https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52	https://bugzilla.suse.com/show_bug.cgi?id=1220779
suse_bugzilla	https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268	https://bugzilla.suse.com/show_bug.cgi?id=1220779
suse_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2267179	https://bugzilla.suse.com/show_bug.cgi?id=1220779
ubuntu	https://git.kernel.org/linus/e41a962f82e7afb5b1ee644f48ad0b3aee656268 (5.13-rc1)	https://ubuntu.com/security/CVE-2021-47058
ubuntu	https://www.cve.org/CVERecord?id=CVE-2021-47058	https://ubuntu.com/security/CVE-2021-47058
ubuntu	https://nvd.nist.gov/vuln/detail/CVE-2021-47058	https://ubuntu.com/security/CVE-2021-47058
ubuntu	https://launchpad.net/bugs/cve/CVE-2021-47058	https://ubuntu.com/security/CVE-2021-47058
ubuntu	https://security-tracker.debian.org/tracker/CVE-2021-47058	https://ubuntu.com/security/CVE-2021-47058
cve_search		https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867
cve_search		https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52
cve_search		https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6
cve_search		https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d
cve_search		https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a
cve_search		https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268
ubuntu	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47058	https://ubuntu.com/security/CVE-2021-47058

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/e41a962f82e7afb5b1ee644f48ad0b3aee656268	https://git.kernel.org/linus/cffa4b2122f5f3e53cf3d529bbc74651f95856d5	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:regmap: set debugfs_name to NULL after it is freedThere is a upstream commit cffa4b2122f5( regmap:debugfs:Fix a memory leak when calling regmap_attach_dev ) thatadds a if condition when create name for debugfs_name.With below function invoking logical, debugfs_name isfreed in regmap_debugfs_exit(), but it is not created againbecause of the if condition introduced by above commit.regmap_reinit_cache()regmap_debugfs_exit()...regmap_debugfs_init()So, set debugfs_name to NULL after it is freed.
openEuler评分：
5.1
Vector：CVSS：3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/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):不受影响
2.openEuler-20.03-LTS-SP4(4.19.90):不受影响
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

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):

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):

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-2021-47058	None	None	https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268 https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6 https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867 https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52 https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a
https://ubuntu.com/security/CVE-2021-47058	None	None	https://discourse.ubuntu.com/c/ubuntu-pro
https://www.opencve.io/cve/CVE-2021-47058	None	None	https://git.kernel.org/stable/c/c764e375ae647832de1ee73d43a4bb3ef8a8f43d https://git.kernel.org/stable/c/e41a962f82e7afb5b1ee644f48ad0b3aee656268 https://git.kernel.org/stable/c/eb949f891226c012138ffd9df90d1e509f428ae6 https://git.kernel.org/stable/c/2dc1554d5f0fdaf47cc5bea442b84b9226fea867 https://git.kernel.org/stable/c/d8897f7b2283a500666c85ef06e820df38ed7b52 https://git.kernel.org/stable/c/b9e569ae1da3a113b3acee8703c94777fd20938a
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2021-47058
https://security-tracker.debian.org/tracker/CVE-2021-47058	None	None	https://git.kernel.org/linus/e41a962f82e7afb5b1ee644f48ad0b3aee656268

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-2021-47058

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

regmap: set debugfs_name to NULL after it is freed

There is a upstream commit cffa4b2122f5("regmap:debugfs:
Fix a memory leak when calling regmap_attach_dev") that
adds a if condition when create name for debugfs_name.
With below function invoking logical, debugfs_name is
freed in regmap_debugfs_exit(), but it is not created again
because of the if condition introduced by above commit.
regmap_reinit_cache()
regmap_debugfs_exit()
...
regmap_debugfs_init()
So, set debugfs_name to NULL after it is freed.

openEuler评分:(评分和向量)
3.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:L

受影响版本排查(受影响/不受影响):
1.openEuler-20.03-LTS-SP1(4.19.90):不受影响
2.openEuler-20.03-LTS-SP4:不受影响
3.openEuler-22.03-LTS:受影响
4.openEuler-22.03-LTS-SP1:受影响
5.openEuler-22.03-LTS-SP2:受影响
6.openEuler-22.03-LTS-SP3:受影响
7.master(6.1.0):不受影响
8.openEuler-22.03-LTS-Next:受影响
9.openEuler-24.03-LTS: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

CVE-2021-47058

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

regmap: set debugfs_name to NULL after it is freed

There is a upstream commit cffa4b2122f5("regmap:debugfs:
Fix a memory leak when calling regmap_attach_dev") that
adds a if condition when create name for debugfs_name.
With below function invoking logical, debugfs_name is
freed in regmap_debugfs_exit(), but it is not created again
because of the if condition introduced by above commit.
regmap_reinit_cache()
regmap_debugfs_exit()
...
regmap_debugfs_init()
So, set debugfs_name to NULL after it is freed.

openEuler评分:(评分和向量)
5.1
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:H

受影响版本排查(受影响/不受影响):
1.openEuler-20.03-LTS-SP1:不受影响
2.openEuler-20.03-LTS-SP4:不受影响
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

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