error handling in x86 IOMMU identity mapping (CVE-2024-31145)

CVE编号

CVE-2024-31145

利用情况

暂无

补丁情况

N/A

披露时间

2024-09-25

漏洞描述

Certain PCI devices in a system might be assigned Reserved Memory Regions (specified via Reserved Memory Region Reporting, "RMRR") for Intel VT-d or Unity Mapping ranges for AMD-Vi. These are typically used for platform tasks such as legacy USB emulation. Since the precise purpose of these regions is unknown, once a device associated with such a region is active, the mappings of these regions need to remain continuouly accessible by the device. In the logic establishing these mappings, error handling was flawed, resulting in such mappings to potentially remain in place when they should have been removed again. Respective guests would then gain access to memory regions which they aren't supposed to have access to.

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
https://xenbits.xenproject.org/xsa/advisory-460.html

受影响软件情况

#	类型	厂商	产品	版本	影响面
1
	运行在以下环境
	系统	alpine_3.17	xen	*		Up to (excluding) 4.16.6-r1
	运行在以下环境
	系统	alpine_3.18	xen	*		Up to (excluding) 4.17.5-r0
	运行在以下环境
	系统	alpine_3.19	xen	*		Up to (excluding) 4.18.3-r0
	运行在以下环境
	系统	alpine_3.20	xen	*		Up to (excluding) 4.18.3-r0
	运行在以下环境
	系统	fedora_39	xen	*		Up to (excluding) 4.17.4-3.fc39
	运行在以下环境
	系统	fedora_40	xen	*		Up to (excluding) 4.18.2-5.fc40
	运行在以下环境
	系统	opensuse_5.5	xen-libs	*		Up to (excluding) 4.17.5_02-150500.3.36.1
	运行在以下环境
	系统	opensuse_Leap_15.5	xen	*		Up to (excluding) 4.17.5_02-150500.3.36.1
	运行在以下环境
	系统	opensuse_Leap_15.6	xen	*		Up to (excluding) 4.18.3_02-150600.3.6.1
	运行在以下环境
	系统	suse_12.sp5	xen	*		Up to (excluding) 4.12.4_52-3.115.1

CVSS3评分 N/A

• 攻击路径 N/A
• 攻击复杂度 N/A
• 权限要求 N/A
• 影响范围 N/A
• 用户交互 N/A
• 可用性 N/A
• 保密性 N/A
• 完整性 N/A

N/A

CWE-ID	漏洞类型

Exp相关链接

- avd.aliyun.com