CVE编号
CVE-2021-4032利用情况
暂无补丁情况
N/A披露时间
2022-01-22漏洞描述
A vulnerability was found in the Linux kernel's KVM subsystem in arch/x86/kvm/lapic.c kvm_free_lapic when a failure allocation was detected. In this flaw the KVM subsystem may crash the kernel due to mishandling of memory errors that happens during VCPU construction, which allows an attacker with special user privilege to cause a denial of service. This flaw affects kernel versions prior to 5.15 rc7.解决建议
建议您更新当前系统或软件至最新版,完成漏洞的修复。
参考链接 |
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https://bugzilla.redhat.com/show_bug.cgi?id=2027403 | |
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id... | |
https://lkml.org/lkml/2021/9/8/587 |
受影响软件情况
# | 类型 | 厂商 | 产品 | 版本 | 影响面 | ||||
1 | |||||||||
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运行在以下环境 | |||||||||
系统 | fedora_33 | cobbler | * |
Up to (excluding) 3.2.2-2.fc33 |
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运行在以下环境 | |||||||||
系统 | fedora_34 | cobbler | * |
Up to (excluding) 3.2.2-1.fc34 |
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运行在以下环境 | |||||||||
系统 | fedora_35 | cobbler | * |
Up to (excluding) 3.2.2-1.fc35 |
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运行在以下环境 | |||||||||
系统 | fedora_Epel_8_Modular | cobbler | * |
Up to (excluding) 3-820210923041615.9edba152 |
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运行在以下环境 | |||||||||
系统 | linux | linux_kernel | * |
Up to (including) 5.14 |
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运行在以下环境 | |||||||||
系统 | linux | linux_kernel | 5.15 | - | |||||
- 攻击路径 本地
- 攻击复杂度 低
- 权限要求 高
- 影响范围 未更改
- 用户交互 无
- 可用性 高
- 保密性 无
- 完整性 无
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