中危 cfg80211:从 P2P_GO 类型切换时调用 cfg80211_stop_ap (CVE-2021-47194)

CVE编号

CVE-2021-47194

利用情况

暂无

补丁情况

官方补丁

披露时间

2024-04-11
漏洞描述
In the Linux kernel, the following vulnerability has been resolved:

cfg80211: call cfg80211_stop_ap when switch from P2P_GO type

If the userspace tools switch from NL80211_IFTYPE_P2P_GO to
NL80211_IFTYPE_ADHOC via send_msg(NL80211_CMD_SET_INTERFACE), it
does not call the cleanup cfg80211_stop_ap(), this leads to the
initialization of in-use data. For example, this path re-init the
sdata->assigned_chanctx_list while it is still an element of
assigned_vifs list, and makes that linked list corrupt.
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)
4.19.232-1
运行在以下环境
系统 debian_11 linux * Up to
(excluding)
5.10.84-1
运行在以下环境
系统 debian_12 linux * Up to
(excluding)
5.15.5-1
运行在以下环境
系统 linux linux_kernel * From
(including)
3.6.0
Up to
(excluding)
4.4.293
运行在以下环境
系统 linux linux_kernel * From
(including)
4.10.0
Up to
(excluding)
4.14.256
运行在以下环境
系统 linux linux_kernel * From
(including)
4.15.0
Up to
(excluding)
4.19.218
运行在以下环境
系统 linux linux_kernel * From
(including)
4.20.0
Up to
(excluding)
5.4.162
运行在以下环境
系统 linux linux_kernel * From
(including)
4.5.0
Up to
(excluding)
4.9.291
运行在以下环境
系统 linux linux_kernel * From
(including)
5.11.0
Up to
(excluding)
5.15.5
运行在以下环境
系统 linux linux_kernel * From
(including)
5.5.0
Up to
(excluding)
5.10.82
阿里云评分
6.5
  • 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
CWE-665 初始化不恰当
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