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Vulnerabilities

Vulnerability · CVE-2025-22050

ZDI-26-702: Linux Kernel usbnet Driver Race Condition Privilege Escalation Vulnerability

Published Apr 16, 2025 · catalog updated May 23, 2026 · Linux Linux

Check this week

CVE-2025-22050 is not in CISA KEV. FIRST estimates a 20.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
20.00%
Remediation
Version ranges on file
Affected products
vendor Linux Linux 6.6.54 <6.6.87

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).

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux 6.6.54 <6.6.876.6.54 <6.6.87

How to fix CVE-2025-22050

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-22050 is not in CISA KEV. FIRST estimates a 20.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Which versions are affected?

Compare what you have installed with Linux Linux 6.6.54 <6.6.87 6.6.54 <6.6.87. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 20.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. May 23, 2026 · EUVD

    Updated

    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. Subse

  2. Sep 14, 2026 · Catalog

    Detected

    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.

Sources

  • CVE.orgVulnerability recordCVE-2025-22050

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-22050

    30-day exploitation probability 20.0%

    first.org
  • EUVDVulnerability recordEUVD-2025-11234

    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 inconsist

    euvd.enisa.europa.eu
  • Zero Day InitiativeCoordinated disclosureZDI-26-702

    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.

    zerodayinitiative.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.