CVE-2021-22566 (CNNVD-202201-1509)
中文标题:
Fuchsia 授权问题漏洞
英文标题:
Incorrect mapping of Executable bits in Fuchsia Kernel
漏洞描述
中文描述:
Fuchsia是一个开源的通用操作系统。 fuchsia 存在安全漏洞，攻击者可以利用该漏洞从用户模式绕过内核模式页面的可执行性限制。
英文描述:
An incorrect setting of UXN bits within mmu_flags_to_s1_pte_attr lead to privileged executable pages being mapped as executable from an unprivileged context. This can be leveraged by an attacker to bypass executability restrictions of kernel-mode pages from user-mode. An incorrect setting of PXN bits within mmu_flags_to_s1_pte_attr lead to unprivileged executable pages being mapped as executable from a privileged context. This can be leveraged by an attacker to bypass executability restrictions of user-mode pages from kernel-mode. Typically this allows a potential attacker to circumvent a mitigation, making exploitation of potential kernel-mode vulnerabilities easier. We recommend updating kernel beyond commit 7d731b4e9599088ac3073956933559da7bca6a00 and rebuilding.
CWE类型:
标签:
受影响产品
| 厂商 | 产品 | 版本 | 版本范围 | 平台 | CPE |
|---|---|---|---|---|---|
| Google LLC | Fuchsia | - | < 7d731b4e9599088ac3073956933559da7bca6a00 | - |
cpe:2.3:a:google_llc:fuchsia:*:*:*:*:*:*:*:*
|
| fuchsia | - | - | - |
cpe:2.3:o:google:fuchsia:-:*:*:*:*:*:*:*
|
解决方案
中文解决方案:
英文解决方案:
临时解决方案:
参考链接
cve.org
CVSS评分详情
4.0 (cna)
MEDIUMCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
时间信息
利用信息
数据源详情
| 数据源 | 记录ID | 版本 | 提取时间 |
|---|---|---|---|
| CVE | cve_CVE-2021-22566 |
2025-11-11 15:20:49 | 2025-11-11 07:36:39 |
| NVD | nvd_CVE-2021-22566 |
2025-11-11 14:57:48 | 2025-11-11 07:45:00 |
| CNNVD | cnnvd_CNNVD-202201-1509 |
2025-11-11 15:10:48 | 2025-11-11 07:57:05 |
版本与语言
安全公告
变更历史
查看详细变更
- vulnerability_type: 未提取 -> 授权问题
- cnnvd_id: 未提取 -> CNNVD-202201-1509
- data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
查看详细变更
- affected_products_count: 1 -> 2
- data_sources: ['cve'] -> ['cve', 'nvd']