Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2012-2121

Quick assessment

Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。NFSv4 implementation是其中的一个分布式文件系统协议。 Linux kernel 3.3.4之前版本的KVM实现中存在漏洞，该漏洞源于未妥善处理内存slots与iommu之间的关系。guest操作系统用户可利用管理员权限对guest操作系统的访问在设备上执行hotunplug与hotplug操作，导致拒绝服务（主机操作系统崩溃）。

AI Predicted 5.9 Difficulty: Moderate EPSS 0.41% · P34

Possible ATT&CK Techniques 1 AI

T1527.001
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2012-2121

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
The KVM implementation in the Linux kernel before 3.3.4 does not properly manage the relationships between memory slots and the iommu, which allows guest OS users to cause a denial of service (memory leak and host OS crash) by leveraging administrative access to the guest OS to conduct hotunplug and hotplug operations on devices.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel ‘KVM’ 权限许可和访问控制漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。NFSv4 implementation是其中的一个分布式文件系统协议。 Linux kernel 3.3.4之前版本的KVM实现中存在漏洞，该漏洞源于未妥善处理内存slots与iommu之间的关系。guest操作系统用户可利用管理员权限对guest操作系统的访问在设备上执行hotunplug与hotplug操作，导致拒绝服务（主机操作系统崩溃）。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2012-2121

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2012-2121

请登录查看更多情报信息。

Patches & Fixes for CVE-2012-2121 (1)

Vendor Advisories for CVE-2012-2121 (8)

Mailing List Discussions for CVE-2012-2121 (1)

Other References for CVE-2012-2121 (1)

Same Patch Batch · n/a · 2012-05-17 · 21 CVEs total

CVE-2012-1090 Linux Kerne ‘cifs_lookup’ 权限许可和访问控制问题漏洞
CVE-2012-2319 Linux kernel 权限许可和访问控制问题漏洞
CVE-2012-2123 Linux kernel ‘security/commoncap.c’ 权限许可和访问控制问题漏洞
CVE-2012-1601 Linux Kernel ‘KVM_CREATE_IRQCHIP ioctl’ 资源管理错误漏洞
CVE-2012-1179 Linux Kernel ‘KVM’ 权限许可和访问控制漏洞
CVE-2011-4611 Linux kernel ‘perf_event_interrupt’ 整数溢出漏洞
CVE-2011-4326 Linux kernel 资源管理错误漏洞
CVE-2011-4131 Linux Kernel ‘NFSv4’ 缓冲区错误漏洞
CVE-2012-1146 Linux Kernel ‘mem_cgroup_usage_unregister_event’ 拒绝服务漏洞
CVE-2012-1097 Linux Kernel ‘regset’ 拒绝服务漏洞
CVE-2011-3637 Linux Kernel ‘m_stop’ 输入验证错误漏洞
CVE-2012-0879 Linux Kernel ‘I/O’ 输入验证错误漏洞
CVE-2012-0207 Linux Kernel ‘igmp_heard_query’ 资源管理错误漏洞
CVE-2012-0058 Linux Kernel ‘kiocb_batch_free’ 资源管理错误漏洞
CVE-2012-0044 Linux kernel 输入验证错误漏洞
CVE-2012-0038 Linux Kernel ‘xfs_acl_from_disk’ 整数溢出漏洞
CVE-2011-4621 Linux Kernel拒绝服务漏洞
CVE-2011-4594 Linux Kernel ‘net/socket.c’ 拒绝服务漏洞
CVE-2011-4112 Linux Kernel ‘IFF_TX_SKB_SHARING’ 权限许可和访问控制问题漏洞
CVE-2011-4097 Linux kernel 输入验证错误漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2012-2121

No comments yet

Leave a comment