What’s Vulnerable › Vulnerabilities

CVE-2025-68307: can: gs_usb: gs_usb_xmit_callback(): fix handling of failed transmitted URBs

• Severity: unknown
• 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: 2025-12-16 · updated 2026-10-14

Description

In the Linux kernel, the following vulnerability has been resolved: can: gs_usb: gs_usb_xmit_callback(): fix handling of failed transmitted URBs The driver lacks the cleanup of failed transfers of URBs. This reduces the number of available URBs per error by 1. This leads to reduced performance and ultimately to a complete stop of the transmission. If the sending of a bulk URB fails do proper cleanup: - increase netdev stats - mark the echo_sbk as free - free the driver's context and do accounting - wake the send queue

Affected products

• Linux kernel: 3.16 — 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/1a588c40a422a3663a52f1c5535e8fb6b044167d
• https://git.kernel.org/stable/c/4a82072e451eacf24fc66a445e906f5095d215db
• https://git.kernel.org/stable/c/516a0cd1c03fa266bb67dd87940a209fd4e53ce7
• https://git.kernel.org/stable/c/87974ebd6552817492daec7866ebfa2c484fa2ac
• https://git.kernel.org/stable/c/9c8eb33b7008178b6ce88aa7593d12063ce60ca3
• https://git.kernel.org/stable/c/f7a5560675bd85efaf16ab01a43053670ff2b000

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