CVE-2025-40120 (CNNVD-202511-1485)

UNKNOWN
中文标题:
Linux kernel 安全漏洞
英文标题:
net: usb: asix: hold PM usage ref to avoid PM/MDIO + RTNL deadlock
CVSS分数: N/A
发布时间: 2025-11-12 10:23:18
漏洞类型: 其他
状态: PUBLISHED
数据质量分数: 0.40
数据版本: v3
漏洞描述
中文描述:

Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于PM和MDIO死锁，可能导致系统挂起。

英文描述:

In the Linux kernel, the following vulnerability has been resolved: net: usb: asix: hold PM usage ref to avoid PM/MDIO + RTNL deadlock Prevent USB runtime PM (autosuspend) for AX88772* in bind. usbnet enables runtime PM (autosuspend) by default, so disabling it via the usb_driver flag is ineffective. On AX88772B, autosuspend shows no measurable power saving with current driver (no link partner, admin up/down). The ~0.453 W -> ~0.248 W drop on v6.1 comes from phylib powering the PHY off on admin-down, not from USB autosuspend. The real hazard is that with runtime PM enabled, ndo_open() (under RTNL) may synchronously trigger autoresume (usb_autopm_get_interface()) into asix_resume() while the USB PM lock is held. Resume paths then invoke phylink/phylib and MDIO, which also expect RTNL, leading to possible deadlocks or PM lock vs MDIO wake issues. To avoid this, keep the device runtime-PM active by taking a usage reference in ax88772_bind() and dropping it in unbind(). A non-zero PM usage count blocks runtime suspend regardless of userspace policy (.../power/control - pm_runtime_allow/forbid), making this approach robust against sysfs overrides. Holding a runtime-PM usage ref does not affect system-wide suspend; system sleep/resume callbacks continue to run as before.

CWE类型:
（暂无数据）
标签:
（暂无数据）
受影响产品
厂商 产品 版本 版本范围 平台 CPE
Linux Linux - < 71a0ba7fdaf8d035426912a4ed7bf1738a81010c - cpe:2.3:a:linux:linux:*:*:*:*:*:*:*:*
Linux Linux 5.14 - - cpe:2.3:a:linux:linux:5.14:*:*:*:*:*:*:*
解决方案
中文解决方案:
（暂无数据）
英文解决方案:
（暂无数据）
临时解决方案:
（暂无数据）
参考链接
无标题 OTHER
cve.org
访问
无标题 OTHER
cve.org
访问
无标题 OTHER
cve.org
访问
无标题 OTHER
cve.org
访问
无标题 OTHER
cve.org
访问
无标题 OTHER
cve.org
访问
CVSS评分详情
暂无CVSS评分信息
时间信息
发布时间:
2025-11-12 10:23:18
修改时间:
2025-12-01 06:18:24
创建时间:
2026-01-12 02:11:43
更新时间:
2026-02-05 06:00:27
利用信息
暂无可利用代码信息
数据源详情
数据源 记录ID 版本 提取时间
CVE cve_CVE-2025-40120 2025-12-03 03:24:31 2026-01-12 02:11:43
NVD nvd_CVE-2025-40120 2025-11-14 03:00:08 2026-01-12 02:27:46
CNNVD cnnvd_CNNVD-202511-1485 2026-01-15 01:52:30 2026-01-15 01:52:58
版本与语言
当前版本: v3
主要语言: EN
支持语言:
EN ZH
安全公告
暂无安全公告信息
变更历史
v3 CNNVD
2026-01-15 01:52:58
vulnerability_type: 未提取 → 其他; severity: SeverityLevel.MEDIUM → SeverityLevel.UNKNOWN; cvss_score: 未提取 → 0.0; cnnvd_id: 未提取 → CNNVD-202511-1485; data_sources: ['cve', 'nvd'] → ['cnnvd', 'cve', 'nvd']
查看详细变更
  • vulnerability_type: 未提取 -> 其他
  • severity: SeverityLevel.MEDIUM -> SeverityLevel.UNKNOWN
  • cvss_score: 未提取 -> 0.0
  • cnnvd_id: 未提取 -> CNNVD-202511-1485
  • data_sources: ['cve', 'nvd'] -> ['cnnvd', 'cve', 'nvd']
v2 NVD
2026-01-12 02:27:46
affected_products_count: 7 → 2; data_sources: ['cve'] → ['cve', 'nvd']
查看详细变更
  • affected_products_count: 7 -> 2
  • data_sources: ['cve'] -> ['cve', 'nvd']