A remote denial of service vulnerability was found in the Linux kernel’s TIPC kernel module. The while loop in tipc_link_xmit() hits an unknown state while attempting to parse SKBs, which are not in the queue. Sending two small UDP packets to a system with a UDP bearer results in the CPU utilization for the system to instantly spike to 100%, causing a denial of service condition.

Project Subscriptions

Vendors Products
Linux Kernel Subscribe
Enterprise Linux Subscribe
Rhel Aus Subscribe
Rhel E4s Subscribe
Rhel Tus Subscribe
Advisories
Source ID Title
EUVD EUVD EUVD-2023-23646 A remote denial of service vulnerability was found in the Linux kernel’s TIPC kernel module. The while loop in tipc_link_xmit() hits an unknown state while attempting to parse SKBs, which are not in the queue. Sending two small UDP packets to a system with a UDP bearer results in the CPU utilization for the system to instantly spike to 100%, causing a denial of service condition.
Ubuntu USN Ubuntu USN USN-6045-1 Linux kernel vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Sat, 19 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-09-18T15:03:30.184Z

Reserved: 2023-03-14T00:00:00.000Z

Link: CVE-2023-1390

cve-icon Vulnrichment

Updated: 2024-08-02T05:49:11.042Z

cve-icon NVD

Status : Modified

Published: 2023-03-16T21:15:11.447

Modified: 2026-06-17T05:27:50.857

Link: CVE-2023-1390

cve-icon Redhat

Severity : Important

Publid Date: 2021-01-09T00:00:00Z

Links: CVE-2023-1390 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses