CVE-2021-47170

一、漏洞信息
漏洞编号：CVE-2021-47170
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:USB: usbfs: Don t WARN about excessively large memory allocationsSyzbot found that the kernel generates a WARNing if the user tries tosubmit a bulk transfer through usbfs with a buffer that is way toolarge. This isn t a bug in the kernel; it s merely an invalid requestfrom the user and the usbfs code does handle it correctly.In theory the same thing can happen with async transfers, or with thepacket descriptor table for isochronous transfers.To prevent the MM subsystem from complaining about these badallocation requests, add the __GFP_NOWARN flag to the kmalloc callsfor these buffers.
漏洞公开时间：2024-03-25 18:15:08
漏洞创建时间：2024-03-25 19:20:21
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2021-47170

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/2ab21d6e1411999b5fb43434f421f00bf50002eb
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47170	https://bugzilla.suse.com/show_bug.cgi?id=1222004
suse_bugzilla	https://www.cve.org/CVERecord?id=CVE-2021-47170	https://bugzilla.suse.com/show_bug.cgi?id=1222004
suse_bugzilla	https://git.kernel.org/stable/c/2ab21d6e1411999b5fb43434f421f00bf50002eb	https://bugzilla.suse.com/show_bug.cgi?id=1222004
suse_bugzilla	https://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83	https://bugzilla.suse.com/show_bug.cgi?id=1222004
suse_bugzilla	https://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de	https://bugzilla.suse.com/show_bug.cgi?id=1222004
suse_bugzilla	https://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed	https://bugzilla.suse.com/show_bug.cgi?id=1222004
suse_bugzilla	https://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098	https://bugzilla.suse.com/show_bug.cgi?id=1222004
suse_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2271470	https://bugzilla.suse.com/show_bug.cgi?id=1222004
redhat_bugzilla	https://lore.kernel.org/linux-cve-announce/2024032536-CVE-2021-47170-ee51@gregkh/T	https://bugzilla.redhat.com/show_bug.cgi?id=2271470
ubuntu	https://git.kernel.org/stable/c/2ab21d6e1411999b5fb43434f421f00bf50002eb	https://ubuntu.com/security/CVE-2021-47170
ubuntu	https://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83	https://ubuntu.com/security/CVE-2021-47170
ubuntu	https://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed	https://ubuntu.com/security/CVE-2021-47170
ubuntu	https://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098	https://ubuntu.com/security/CVE-2021-47170
ubuntu	https://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de	https://ubuntu.com/security/CVE-2021-47170
ubuntu	https://www.cve.org/CVERecord?id=CVE-2021-47170	https://ubuntu.com/security/CVE-2021-47170
ubuntu	https://nvd.nist.gov/vuln/detail/CVE-2021-47170	https://ubuntu.com/security/CVE-2021-47170
ubuntu	https://launchpad.net/bugs/cve/CVE-2021-47170	https://ubuntu.com/security/CVE-2021-47170
ubuntu	https://security-tracker.debian.org/tracker/CVE-2021-47170	https://ubuntu.com/security/CVE-2021-47170
cve_search		https://git.kernel.org/stable/c/2ab21d6e1411999b5fb43434f421f00bf50002eb
cve_search		https://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83
cve_search		https://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed
cve_search		https://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098
cve_search		https://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de
ubuntu	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47170	https://ubuntu.com/security/CVE-2021-47170

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/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de	https://git.kernel.org/linus/1da177e4c3f41524e886b7f1b8a0c1fc7321cac2	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:USB: usbfs: Don t WARN about excessively large memory allocationsSyzbot found that the kernel generates a WARNing if the user tries tosubmit a bulk transfer through usbfs with a buffer that is way toolarge. This isn t a bug in the kernel; it s merely an invalid requestfrom the user and the usbfs code does handle it correctly.In theory the same thing can happen with async transfers, or with thepacket descriptor table for isochronous transfers.To prevent the MM subsystem from complaining about these badallocation requests, add the __GFP_NOWARN flag to the kmalloc callsfor these buffers.
openEuler评分：
5.5
Vector：CVSS：2.0/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-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-2024-1484

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.

@YangYingliang ,@成坚 (CHENG Jian) ,@jiaoff ,@AlexGuo ,@hanjun-guo ,@woqidaideshi ,@Jackie Liu ,@Zhang Yi ,@colyli ,@ThunderTown ,@htforge ,@Chiqijun ,@冷嘲啊 ,@zhujianwei001 ,@kylin-mayukun ,@wangxiongfeng ,@Kefeng ,@SuperSix173 ,@WangShaoBo ,@Zheng Zucheng
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.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:
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.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:
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-2021-47170	None	None	https://git.kernel.org/stable/c/2ab21d6e1411999b5fb43434f421f00bf50002eb https://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098 https://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83 https://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed https://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de
https://ubuntu.com/security/CVE-2021-47170	None	None	https://discourse.ubuntu.com/c/ubuntu-pro
https://www.opencve.io/cve/CVE-2021-47170	None	None	https://git.kernel.org/stable/c/2ab21d6e1411999b5fb43434f421f00bf50002eb https://git.kernel.org/stable/c/9f7cb3f01a10d9064cf13b3d26fb7e7a5827d098 https://git.kernel.org/stable/c/2c835fede13e03f2743a333e4370b5ed2db91e83 https://git.kernel.org/stable/c/8d83f109e920d2776991fa142bb904d985dca2ed https://git.kernel.org/stable/c/4f2629ea67e7225c3fd292c7fe4f5b3c9d6392de
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2021-47170
https://security-tracker.debian.org/tracker/CVE-2021-47170

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

@ci-robot 请确认分支: master,openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS,openEuler-22.03-LTS-Next,openEuler-22.03-LTS-SP1,openEuler-22.03-LTS-SP2,openEuler-22.03-LTS-SP3,openEuler-24.03-LTS,openEuler-24.03-LTS-Next 受影响/不受影响.
请确认分支信息是否填写完整,否则将无法关闭当前issue.

@zhangchangzhong 请确认分支: master,openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS,openEuler-22.03-LTS-Next,openEuler-22.03-LTS-SP1,openEuler-22.03-LTS-SP2,openEuler-22.03-LTS-SP3,openEuler-24.03-LTS,openEuler-24.03-LTS-Next 受影响/不受影响.
请确认分支信息是否填写完整,否则将无法关闭当前issue.

@hongrongxuan 请确认分支: master,openEuler-20.03-LTS-SP1,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS,openEuler-22.03-LTS-Next,openEuler-22.03-LTS-SP1,openEuler-22.03-LTS-SP2,openEuler-22.03-LTS-SP3,openEuler-24.03-LTS,openEuler-24.03-LTS-Next 受影响/不受影响.
请确认分支信息是否填写完整,否则将无法关闭当前issue.

CVE-2021-47170

影响性分析说明：
Reserved.

openEuler评分:(评分和向量)
0.0
CVSS: 3.0/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:N

@郭梦琪 4.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:master:,openEuler-20.03-LTS-SP1:,openEuler-20.03-LTS-SP4:,openEuler-22.03-LTS:,openEuler-22.03-LTS-Next:,openEuler-22.03-LTS-SP1:,openEuler-22.03-LTS-SP2:,openEuler-22.03-LTS-SP3:,openEuler-24.03-LTS:,openEuler-24.03-LTS-Next:

CVE-2021-47170

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

USB: usbfs: Don't WARN about excessively large memory allocations

Syzbot found that the kernel generates a WARNing if the user tries to
submit a bulk transfer through usbfs with a buffer that is way too
large. This isn't a bug in the kernel; it's merely an invalid request
from the user and the usbfs code does handle it correctly.

In theory the same thing can happen with async transfers, or with the
packet descriptor table for isochronous transfers.

To prevent the MM subsystem from complaining about these bad
allocation requests, add the __GFP_NOWARN flag to the kmalloc calls
for these buffers.

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.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:USB: usbfs: Don't WARN about excessively large memory allocationsSyzbot found that the kernel generates a WARNing if the user tries tosubmit a bulk transfer through usbfs with a buffer that is way toolarge. This isn't a bug in the kernel; it's merely an invalid requestfrom the user and the usbfs code does handle it correctly.In theory the same thing can happen with async transfers, or with thepacket descriptor table for isochronous transfers.To prevent the MM subsystem from complaining about these badallocation requests, add the __GFP_NOWARN flag to the kmalloc callsfor these buffers.
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-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.

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