What’s Vulnerable › Vulnerabilities

CVE-2025-40095: usb: gadget: f_rndis: Refactor bind path to use __free()

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-10-30 · updated 2026-10-19

Description

In the Linux kernel, the following vulnerability has been resolved: usb: gadget: f_rndis: Refactor bind path to use __free() After an bind/unbind cycle, the rndis->notify_req is left stale. If a subsequent bind fails, the unified error label attempts to free this stale request, leading to a NULL pointer dereference when accessing ep->ops->free_request. Refactor the error handling in the bind path to use the __free() automatic cleanup mechanism.

Affected products

• Linux kernel: 2.6.27 — fixed in 6.18

How to fix

Upgrade to a fixed version: Linux kernel 6.18. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/08228941436047bdcd35a612c1aec0912a29d8cd
• https://git.kernel.org/stable/c/380353c3a92be7d928e6f973bd065c5b79755ac3
• https://git.kernel.org/stable/c/5f65c8ad8c7292ed7e3716343fcd590a51818cc3
• https://git.kernel.org/stable/c/a8366263b7e5b663d7fb489d3a9ba1e2600049a6
• https://git.kernel.org/stable/c/ef81226bb1f8b6e761cd0b53d2696e9c1bc955d1

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