CVE-2025-21701— Linux kernel 安全漏洞
影响版本矩阵 17
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | cfd719f04267108f5f5bf802b9d7de69e99a99f9< 26bc6076798aa4dc83a07d0a386f9e57c94e8517 | affected |
dde91ccfa25fd58f64c397d91b81a4b393100ffa< b1cb37a31a482df3dd35a6ac166282dac47664f4 | affected | ||
dde91ccfa25fd58f64c397d91b81a4b393100ffa< 2f29127e94ae9fdc7497331003d6860e9551cdf3 | affected | ||
dde91ccfa25fd58f64c397d91b81a4b393100ffa< b382ab9b885cbb665e0e70a727f101c981b4edf3 | affected | ||
dde91ccfa25fd58f64c397d91b81a4b393100ffa< 4dc880245f9b529fa8f476b5553c799d2848b47b | affected | ||
dde91ccfa25fd58f64c397d91b81a4b393100ffa< 12e070eb6964b341b41677fd260af5a305316a1f | affected | ||
7c26da3be1e9843a15b5318f90db8a564479d2ac | affected | ||
5.15.8< 5.15.179 | affected | ||
| … +9 条更多 | |||
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一、 漏洞 CVE-2025-21701 基础信息
漏洞信息
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Vulnerability Title
net: avoid race between device unregistration and ethnl ops
来源: 美国国家漏洞数据库 NVD
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net: avoid race between device unregistration and ethnl ops The following trace can be seen if a device is being unregistered while its number of channels are being modified. DEBUG_LOCKS_WARN_ON(lock->magic != lock) WARNING: CPU: 3 PID: 3754 at kernel/locking/mutex.c:564 __mutex_lock+0xc8a/0x1120 CPU: 3 UID: 0 PID: 3754 Comm: ethtool Not tainted 6.13.0-rc6+ #771 RIP: 0010:__mutex_lock+0xc8a/0x1120 Call Trace: <TASK> ethtool_check_max_channel+0x1ea/0x880 ethnl_set_channels+0x3c3/0xb10 ethnl_default_set_doit+0x306/0x650 genl_family_rcv_msg_doit+0x1e3/0x2c0 genl_rcv_msg+0x432/0x6f0 netlink_rcv_skb+0x13d/0x3b0 genl_rcv+0x28/0x40 netlink_unicast+0x42e/0x720 netlink_sendmsg+0x765/0xc20 __sys_sendto+0x3ac/0x420 __x64_sys_sendto+0xe0/0x1c0 do_syscall_64+0x95/0x180 entry_SYSCALL_64_after_hwframe+0x76/0x7e This is because unregister_netdevice_many_notify might run before the rtnl lock section of ethnl operations, eg. set_channels in the above example. In this example the rss lock would be destroyed by the device unregistration path before being used again, but in general running ethnl operations while dismantle has started is not a good idea. Fix this by denying any operation on devices being unregistered. A check was already there in ethnl_ops_begin, but not wide enough. Note that the same issue cannot be seen on the ioctl version (__dev_ethtool) because the device reference is retrieved from within the rtnl lock section there. Once dismantle started, the net device is unlisted and no reference will be found.
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
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，该漏洞源于如果在设备通道数被修改时注销设备可以导致竞争条件。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2025-21701 的公开POC
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|---|
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CVE-2025-21701 补丁与修复 (5)
CVE-2025-21701 其他参考 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2025-21701
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