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Vulnerability record · CVE-2023-1390 · published 16 March 2023

CVE-2023-1390: Linux kernel vulnerability

Linux · Linux Kernel

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.

7.5 CVSS 3.1 High EPSS 5.1% · top 7.9% CWE-1050 · CWE-1050
7.5CVSS 3.1 base score
5.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/netspooky/bee2d07022f6350bb88eaa48e571d9b5 Third Party Advisory
https://github.com/torvalds/linux/commit/b77413446408fdd256599daf00d5be72b5f3e7c6 PatchVendor Advisory
https://infosec.exchange/%40_mattata/109427999461122360
https://security.netapp.com/advisory/ntap-20230420-0001/ Third Party Advisory
https://gist.github.com/netspooky/bee2d07022f6350bb88eaa48e571d9b5 Third Party Advisory
https://github.com/torvalds/linux/commit/b77413446408fdd256599daf00d5be72b5f3e7c6 PatchVendor Advisory
https://infosec.exchange/%40_mattata/109427999461122360
https://security.netapp.com/advisory/ntap-20230420-0001/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2023-1390), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.