中危 通过共享资源进行 PCI 设备直通（CVE-2024-31146）

CVE编号

CVE-2024-31146

利用情况

暂无

补丁情况

官方补丁

披露时间

2024-09-25
漏洞描述
When multiple devices share resources and one of them is to be passed
through to a guest, security of the entire system and of respective
guests individually cannot really be guaranteed without knowing
internals of any of the involved guests. Therefore such a configuration
cannot really be security-supported, yet making that explicit was so far
missing.

Resources the sharing of which is known to be problematic include, but
are not limited to
- - PCI Base Address Registers (BARs) of multiple devices mapping to the
same page (4k on x86),
- - INTx lines.
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-461.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 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
阿里云评分
6.2
  • 攻击路径
    本地
  • 攻击复杂度
    复杂
  • 权限要求
    普通权限
  • 影响范围
    越权影响
  • EXP成熟度
    未验证
  • 补丁情况
    官方补丁
  • 数据保密性
    无影响
  • 数据完整性
    无影响
  • 服务器危害
    无影响
  • 全网数量
    N/A
CWE-ID 漏洞类型
阿里云安全产品覆盖情况