What is CVE-2023-2019?

CVE-2023-2019 is a medium-severity vulnerability in Linux Kernel, classified under CWE-911. CVSS score: 4.4/10. Published 2023-04-24.

How severe is CVE-2023-2019?

Medium severity. CVSS v3 base score is 4.4 out of 10.

Vulnerability in Linux Kernel

CVE-2023-2019

A flaw was found in the Linux kernel's netdevsim device driver, within the scheduling of events. This issue results from the improper management of a reference count. This may allow an attacker to create a denial of service condition on the system.

Published 2023-04-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.4 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.003 (27.5th percentile), scored 2026-11-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Linux Kernel
Red Hat Enterprise Linux — versions 9.0
Linux Kernel's Netdevsim Device Driver — versions Fixed in kernel v6.0-rc1

Weakness classification (CWE)

CWE-911

References

bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
www.zerodayinitiative.com/advisories/ZDI-CAN-17811/ (VDB Entry, Third Party Advisory)
github.com/torvalds/linux/commit/180a6a3ee60a (Patch)

Frequently asked questions

What is CVE-2023-2019?: CVE-2023-2019 is a medium-severity vulnerability in Linux Kernel, classified under CWE-911. CVSS score: 4.4/10. Published 2023-04-24.
How severe is CVE-2023-2019?: Medium severity. CVSS v3 base score is 4.4 out of 10.