CVE-2021-47060

一、漏洞信息
漏洞编号：CVE-2021-47060
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:KVM: Stop looking for coalesced MMIO zones if the bus is destroyedAbort the walk of coalesced MMIO zones if kvm_io_bus_unregister_dev()fails to allocate memory for the new instance of the bus. If it can tinstantiate a new bus, unregister_dev() destroys all devices except thetarget device. But, it doesn t tell the caller that it obliterated thebus and invoked the destructor for all devices that were on the bus. Inthe coalesced MMIO case, this can result in a deleted list entrydereference due to attempting to continue iterating on coalesced_zonesafter future entries (in the walk) have been deleted.Opportunistically add curly braces to the for-loop, which encompassesmany lines but sneaks by without braces due to the guts being a singleif statement.
漏洞公开时间：2024-03-01 07:15:07
漏洞创建时间：2024-03-01 07:47:59
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2021-47060

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/168e82f640ed1891a700bdb43e37da354b2ab63c
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/2a20592baff59c5351c5200ec667e1a2aa22af85
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/50cbad42bfea8c052b7ca590bd4126cdc898713c
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/5d3c4c79384af06e3c8e25b7770b6247496b4417
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/7d1bc32d6477ff96a32695ea4be8144e4513ab2d
suse_bugzilla	http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2021-47060	https://bugzilla.suse.com/show_bug.cgi?id=1220742
suse_bugzilla	https://www.cve.org/CVERecord?id=CVE-2021-47060	https://bugzilla.suse.com/show_bug.cgi?id=1220742
suse_bugzilla	https://git.kernel.org/stable/c/168e82f640ed1891a700bdb43e37da354b2ab63c	https://bugzilla.suse.com/show_bug.cgi?id=1220742
suse_bugzilla	https://git.kernel.org/stable/c/2a20592baff59c5351c5200ec667e1a2aa22af85	https://bugzilla.suse.com/show_bug.cgi?id=1220742
suse_bugzilla	https://git.kernel.org/stable/c/50cbad42bfea8c052b7ca590bd4126cdc898713c	https://bugzilla.suse.com/show_bug.cgi?id=1220742
suse_bugzilla	https://git.kernel.org/stable/c/5d3c4c79384af06e3c8e25b7770b6247496b4417	https://bugzilla.suse.com/show_bug.cgi?id=1220742
suse_bugzilla	https://git.kernel.org/stable/c/7d1bc32d6477ff96a32695ea4be8144e4513ab2d	https://bugzilla.suse.com/show_bug.cgi?id=1220742
suse_bugzilla	https://bugzilla.redhat.com/show_bug.cgi?id=2267175	https://bugzilla.suse.com/show_bug.cgi?id=1220742
redhat_bugzilla	https://lore.kernel.org/linux-cve-announce/2024022952-CVE-2021-47060-d2ce@gregkh/T/#u	https://bugzilla.redhat.com/show_bug.cgi?id=2267175
cve_search		https://git.kernel.org/stable/c/7d1bc32d6477ff96a32695ea4be8144e4513ab2d
cve_search		https://git.kernel.org/stable/c/2a20592baff59c5351c5200ec667e1a2aa22af85
cve_search		https://git.kernel.org/stable/c/168e82f640ed1891a700bdb43e37da354b2ab63c
cve_search		https://git.kernel.org/stable/c/50cbad42bfea8c052b7ca590bd4126cdc898713c
cve_search		https://git.kernel.org/stable/c/5d3c4c79384af06e3c8e25b7770b6247496b4417
ubuntu	https://git.kernel.org/linus/5d3c4c79384af06e3c8e25b7770b6247496b4417 (5.13-rc1)	https://ubuntu.com/security/CVE-2021-47060
ubuntu	https://www.cve.org/CVERecord?id=CVE-2021-47060	https://ubuntu.com/security/CVE-2021-47060
ubuntu	https://nvd.nist.gov/vuln/detail/CVE-2021-47060	https://ubuntu.com/security/CVE-2021-47060
ubuntu	https://launchpad.net/bugs/cve/CVE-2021-47060	https://ubuntu.com/security/CVE-2021-47060
ubuntu	https://security-tracker.debian.org/tracker/CVE-2021-47060	https://ubuntu.com/security/CVE-2021-47060
ubuntu	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-47060	https://ubuntu.com/security/CVE-2021-47060

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/5d3c4c79384af06e3c8e25b7770b6247496b4417	https://git.kernel.org/linus/f65886606c2d3b562716de030706dfe1bea4ed5e	ubuntu
linux-azure		https://git.kernel.org/linus/5d3c4c79384af06e3c8e25b7770b6247496b4417	https://git.kernel.org/linus/f65886606c2d3b562716de030706dfe1bea4ed5e	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:KVM: Stop looking for coalesced MMIO zones if the bus is destroyedAbort the walk of coalesced MMIO zones if kvm_io_bus_unregister_dev()fails to allocate memory for the new instance of the bus. If it can tinstantiate a new bus, unregister_dev() destroys all devices except thetarget device. But, it doesn t tell the caller that it obliterated thebus and invoked the destructor for all devices that were on the bus. Inthe coalesced MMIO case, this can result in a deleted list entrydereference due to attempting to continue iterating on coalesced_zonesafter future entries (in the walk) have been deleted.Opportunistically add curly braces to the for-loop, which encompassesmany lines but sneaks by without braces due to the guts being a singleif statement.
openEuler评分：
6.7
Vector：CVSS：2.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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.
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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-2021-47060	None	None	https://git.kernel.org/stable/c/50cbad42bfea8c052b7ca590bd4126cdc898713c https://git.kernel.org/stable/c/2a20592baff59c5351c5200ec667e1a2aa22af85 https://git.kernel.org/stable/c/7d1bc32d6477ff96a32695ea4be8144e4513ab2d https://git.kernel.org/stable/c/168e82f640ed1891a700bdb43e37da354b2ab63c https://git.kernel.org/stable/c/5d3c4c79384af06e3c8e25b7770b6247496b4417
https://ubuntu.com/security/CVE-2021-47060	None	None	https://discourse.ubuntu.com/c/ubuntu-pro
https://www.opencve.io/cve/CVE-2021-47060	None	None	https://git.kernel.org/stable/c/50cbad42bfea8c052b7ca590bd4126cdc898713c https://git.kernel.org/stable/c/2a20592baff59c5351c5200ec667e1a2aa22af85 https://git.kernel.org/stable/c/7d1bc32d6477ff96a32695ea4be8144e4513ab2d https://git.kernel.org/stable/c/168e82f640ed1891a700bdb43e37da354b2ab63c https://git.kernel.org/stable/c/5d3c4c79384af06e3c8e25b7770b6247496b4417
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2021-47060
https://security-tracker.debian.org/tracker/CVE-2021-47060	None	None	https://git.kernel.org/linus/5d3c4c79384af06e3c8e25b7770b6247496b4417

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 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 受影响/不受影响.
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请确认分支信息是否填写完整,否则将无法关闭当前issue.

CVE-2021-47060

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: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

@郭梦琪 1.影响性分析说明=> 没有填写或按正确格式填写

CVE-2021-47060

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 2.openEulerScore=> 没有填写或正确填写(0-10)

CVE-2021-47060

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

@CTC-Xibo.Wang 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	Reserved.
已分析	2.openEulerScore	4
已分析	3.openEulerVector	AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:N
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:受影响,openEuler-22.03-LTS-SP1:受影响,openEuler-22.03-LTS-SP2:受影响,openEuler-22.03-LTS-SP3:受影响,openEuler-22.03-LTS-Next:受影响,master:不受影响,openEuler-24.03-LTS: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

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-2021-47060

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

KVM: Stop looking for coalesced MMIO zones if the bus is destroyed

Abort the walk of coalesced MMIO zones if kvm_io_bus_unregister_dev()
fails to allocate memory for the new instance of the bus. If it can't
instantiate a new bus, unregister_dev() destroys all devices except the
target device. But, it doesn't tell the caller that it obliterated the
bus and invoked the destructor for all devices that were on the bus. In
the coalesced MMIO case, this can result in a deleted list entry
dereference due to attempting to continue iterating on coalesced_zones
after future entries (in the walk) have been deleted.

Opportunistically add curly braces to the for-loop, which encompasses
many lines but sneaks by without braces due to the guts being a single
if statement.

openEuler评分:(评分和向量)
6.7
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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

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

@CTC-Xibo.Wang 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:KVM: Stop looking for coalesced MMIO zones if the bus is destroyedAbort the walk of coalesced MMIO zones if kvm_io_bus_unregister_dev()fails to allocate memory for the new instance of the bus. If it can'tinstantiate a new bus, unregister_dev() destroys all devices except thetarget device. But, it doesn't tell the caller that it obliterated thebus and invoked the destructor for all devices that were on the bus. Inthe coalesced MMIO case, this can result in a deleted list entrydereference due to attempting to continue iterating on coalesced_zonesafter future entries (in the walk) have been deleted.Opportunistically add curly braces to the for-loop, which encompassesmany lines but sneaks by without braces due to the guts being a singleif statement.
已分析	2.openEulerScore	6.7
已分析	3.openEulerVector	AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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.

src-openEuler / kernel

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src-openEuler / kernel .gitee-modal { width: 500px !important; }

内容风险标识

CVE-2021-47060

评论 (14)

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src-openEuler / kernel