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No exploitation reportedFix available

CVE-2023-1390

No exploitation reported by the sources we read.

  • Published2023-03-16
  • Fixed in5.10.10 · 5.4.92 · 4.19.170 · 4.14.217 · 4.9.253
  • WeaknessCWE-1050

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2023-03-1621:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-1390?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-1390?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Linux linux kernel
BranchAffectedFixed in
5.x≥ 5.5, < 5.10.105.10.10
5.4≥ 4.20, < 5.4.925.4.92
4.x≥ 4.15, < 4.19.1704.19.170
4.x≥ 4.10, < 4.14.2174.14.217
4.x≥ 4.3, < 4.9.2534.9.253
5.11= 5.11no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

  1. Update Linux linux kernel to 5.10.10 · 5.4.92 · 4.19.170 · 4.14.217 · 4.9.253

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • CISA-ADPSSVC decisionnone2025-04-23
  • OpenCVESSVC decisionnone—
  • CISA-ADPCVSS 3.17.52025-04-23
  • NVDCVSS 3.17.5read 2026-10-23
  • CNAweakness (CWE)CWE-1050read 2026-10-23
  • FIRST EPSSEPSS score5.1 %2026-10-22

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
2023-03-16
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2023-1390?

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.

Is CVE-2023-1390 actively exploited?

Active exploitation of CVE-2023-1390 has not been confirmed. Its EPSS score was 5.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-1390?

CVE-2023-1390 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

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