Not yet scoredPublished Dec 16, 2025

CVE-2025-68312usbnet: Prevents free active kevent

Updated under an hour ago (Oct 27, 2026, 9:40 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

In the Linux kernel, the following vulnerability has been resolved: usbnet: Prevents free active kevent The root cause of this issue are: 1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0); put the kevent work in global workqueue. However, the kevent has not yet been scheduled when the usbnet device is unregistered. Therefore, executing free_netdev() results in the "free active object (kevent)" error reported here. 2. Another factor is that when calling usbnet_disconnect()->unregister_netdev(), if the usbnet device is up, ndo_stop() is executed to cancel the kevent. However, because the device is not up, ndo_stop() is not executed. The solution to this problem is to cancel the kevent before executing free_netdev().

CVSS: Not yet scored
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Linux
NVD analysis: Deferred
Record last updated: Jun 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Linux Linux linux:linux (from the name)	from 8b4588b8b00b299be16a35be67b331d8fdba03f3 before 285d4b953f2ca03c358f986718dd89ee9bde632e; 135199a2edd459d2b123144efcd7f9bcd95128e4 builds before 88a38b135d69f5db9024ff6527232f1b51be8915; from 635fd8953e4309b54ca6a81bed1d4a87668694f4 before 43005002b60ef3424719ecda16d124714b45da3b; from a69e617e533edddf3fa3123149900f36e0a6dc74 before 3a10619fdefd3051aeb14860e4d4335529b4e94d; from a69e617e533edddf3fa3123149900f36e0a6dc74 before 9a579d6a39513069d298eee70770bbac8a148565; from a69e617e533edddf3fa3123149900f36e0a6dc74 before 2ce1de32e05445d77fc056f6ff8339cfb78a5f84; from a69e617e533edddf3fa3123149900f36e0a6dc74 before 5158fb8da162e3982940f30cd01ed77bdf42c6fc; from a69e617e533edddf3fa3123149900f36e0a6dc74 before 420c84c330d1688b8c764479e5738bbdbf0a33de; and 13 more ranges	CNA record

References

References

https://git.kernel.org/stable/c/285d4b953f2ca03c358f986718dd89ee9bde632e
https://git.kernel.org/stable/c/88a38b135d69f5db9024ff6527232f1b51be8915
https://git.kernel.org/stable/c/43005002b60ef3424719ecda16d124714b45da3b
https://git.kernel.org/stable/c/3a10619fdefd3051aeb14860e4d4335529b4e94d
https://git.kernel.org/stable/c/9a579d6a39513069d298eee70770bbac8a148565
https://git.kernel.org/stable/c/2ce1de32e05445d77fc056f6ff8339cfb78a5f84
https://git.kernel.org/stable/c/5158fb8da162e3982940f30cd01ed77bdf42c6fc
https://git.kernel.org/stable/c/420c84c330d1688b8c764479e5738bbdbf0a33de

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.