7.5

CVE-2023-1390: linux linux_kernel

Modified
AliasesUBUNTU-CVE-2023-1390DEBIAN-CVE-2023-1390
Published 16-03-2023Last modified 18-09-2026

Vulnerability summary

CVE-2023-1390 is a high (CVSS 7.5) vulnerability in linux linux_kernel. EPSS estimates a 5.10% chance of exploitation in the next 30 days, higher than 92.3% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 5% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
5.10%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 36 · Related 29
RHSA-2021:1578RHSA-2021:1739RHSA-2023:3190RHSA-2023:3191RHSA-2023:4125RHSA-2023:4126

Timeline

  1. 16-03-2023
    PublishedVulnerability first disclosed.
  2. 18-09-2026
    Last modifiedVulnerability information updated.

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 metrics

5 scores · 4 sources · 2 versions

EPSS trend

Probability

5.10%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

No change 0.00 pp

From 5.10% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu64 products
  • linux< 4.4.0-240.274 | < 4.15.0-137.141 | < 5.4.0-67.75
  • linux-aws< 4.4.0-1118.124 | < 4.4.0-1156.171 | < 4.15.0-1095.102 | < 5.4.0-1039.41
  • linux-aws-5.0All versions (No fix recorded)
  • linux-aws-5.11All versions (No fix recorded)
  • linux-aws-5.13All versions (No fix recorded)
Debian1 product
  • linux< 5.10.12-1
Linux1 product
  • linux_kernel≥ 4.3, < 4.9.253 | ≥ 4.10, < 4.14.217 | ≥ 4.15, < 4.19.170 | ≥ 4.20, < 5.4.92 | ≥ 5.5, < 5.10.10 | 5.11:rc1 | 5.11:rc2 | 5.11:rc3

3 vendors · 66 products

References

10 links