CVE-2023-1390

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

5.1% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2023-03-16 21:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 05:27 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 5.1% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2023-03-16 21:15 UTC

Last modified

2026-06-17 05:27 UTC

Exploit probability

5.1% · EPSS, next 30 days

Weakness

CWE-1050

Record status

Modified

Affected

• Linux Kernel < 4.9.253
• Linux Kernel < 4.14.217
• Linux Kernel < 4.19.170
• Linux Kernel < 5.4.92
• Linux Kernel < 5.10.10
• Linux Kernel 5.11

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2023-1390.md and follow it. Check whether this project is affected by CVE-2023-1390. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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