ZDI-26-702: Linux Kernel usbnet Driver Race Condition Privilege Escalation Vulnerability
ZDI discloses Linux Kernel usbnet driver race condition (CVE-2025-22050) enabling physically present attackers to escalate privileges without authentication.
ZDI-26-702 covers a race condition privilege escalation vulnerability in the Linux Kernel usbnet driver, assigned CVE-2025-22050 with a CVSS rating of 7.1. A physically present attacker can escalate privileges on affected installations. Authentication is not required to exploit the vulnerability.
- CVE-2025-22050, CVSS 7.1, in Linux Kernel usbnet driver
- Privilege escalation achievable by physically present attackers
- No authentication required for exploitation
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2025-22050 | In the Linux kernel, the following vulnerability has been resolved: In the Linux kernel, the following vulnerability has been resolved: usbnet:fix NPE during rx_complete Missing usbnet_going_away Check in Critical Path. The usb_submit_urb function lacks a usbnet_going_away validation, whereas __usbnet_queue_skb includes this check. This inconsistency creates a race condition where: A URB request may succeed, but the corresponding SKB data fails to be queued. Subsequent processes: (e.g., rx_complete → defer_bh → __skb_unlink(skb, list)) attempt to access skb->next, triggering a NULL pointer dereference (Kernel Panic). NVD description · AI analysis pending | 4.7 | <1% |
| — |
This vulnerability allows physically present attackers to escalate privileges on affected installations of Linux Kernel. Authentication is not required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.1. The following CVEs are assigned: CVE-2025-22050.
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