中危 ACPI:GTDT:不要在监视探测失败时破坏中断映射 (CVE-2021-46953)

CVE编号

CVE-2021-46953

利用情况

暂无

补丁情况

官方补丁

披露时间

2024-02-28
漏洞描述
In the Linux kernel, the following vulnerability has been resolved:

ACPI: GTDT: Don't corrupt interrupt mappings on watchdow probe failure

When failing the driver probe because of invalid firmware properties,
the GTDT driver unmaps the interrupt that it mapped earlier.

However, it never checks whether the mapping of the interrupt actially
succeeded. Even more, should the firmware report an illegal interrupt
number that overlaps with the GIC SGI range, this can result in an
IPI being unmapped, and subsequent fireworks (as reported by Dann
Frazier).

Rework the driver to have a slightly saner behaviour and actually
check whether the interrupt has been mapped before unmapping things.
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。
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 debian_10 linux * Up to
(excluding)
4.19.194-1
运行在以下环境
系统 debian_11 linux * Up to
(excluding)
5.10.38-1
运行在以下环境
系统 debian_12 linux * Up to
(excluding)
5.10.38-1
运行在以下环境
系统 linux linux_kernel * From
(including)
4.12.0
Up to
(excluding)
4.14.233
运行在以下环境
系统 linux linux_kernel * From
(including)
4.15.0
Up to
(excluding)
4.19.191
运行在以下环境
系统 linux linux_kernel * From
(including)
4.20.0
Up to
(excluding)
5.4.118
运行在以下环境
系统 linux linux_kernel * From
(including)
5.11.0
Up to
(excluding)
5.11.20
运行在以下环境
系统 linux linux_kernel * From
(including)
5.12.0
Up to
(excluding)
5.12.3
运行在以下环境
系统 linux linux_kernel * From
(including)
5.5.0
Up to
(excluding)
5.10.36
阿里云评分
6.3
  • 攻击路径
    本地
  • 攻击复杂度
    困难
  • 权限要求
    普通权限
  • 影响范围
    有限影响
  • 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
NVD-CWE-noinfo
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