CVE-2023-2019

Severity: medium (CVSS 4.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-04-24 · updated 2026-06-17
Weakness: CWE-911

Description

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.

Affected products

Linux kernel: before 6.0 — fixed in 6.0
Red Hat Enterprise Linux: 9.0

How to fix

Upgrade to a fixed version: Linux kernel 6.0. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2189137
https://github.com/torvalds/linux/commit/180a6a3ee60a
https://www.zerodayinitiative.com/advisories/ZDI-CAN-17811/
https://bugzilla.redhat.com/show_bug.cgi?id=2189137
https://github.com/torvalds/linux/commit/180a6a3ee60a
https://www.zerodayinitiative.com/advisories/ZDI-CAN-17811/

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