Cyber Resilience

CVE-2023-2019

Linux Kernel ≤ 6.0

Published
24 April 2023
Modified
18 March 2025
Patch / advisory
View advisory
CVSS Score v3.1 4.4
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0034 27th percentile
Risk Priority 36 floored blend · peak EPSS

Summary

CVE-2023-2019 is a medium-severity Improper Update of Reference Count (CWE-911) vulnerability in Linux Linux Kernel. Its CVSS base score is 4.4 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploitation for Privilege Escalation (T1068); ranked at the 27th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

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…

more

the system.

CWE(s)
CWE-911NVD-CWE-Other

Related Threats

MITRE ATT&CK Enterprise Techniques

T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
T1210 Exploitation of Remote Services Lateral Movement
Adversaries may exploit remote services to gain unauthorized access to internal systems once inside of a network.
attack.mitre.org →
T1212 Exploitation for Credential Access Credential Access
Adversaries may exploit software vulnerabilities in an attempt to collect credentials.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-2513Same product: Linux Linux Kernel
CVE-2023-4387Same product: Linux Linux Kernel
CVE-2023-1192Same product: Linux Linux Kernel
CVE-2024-0562Same product: Linux Linux Kernel
CVE-2024-0775Same product: Linux Linux Kernel
CVE-2023-1652Same product: Linux Linux Kernel
CVE-2023-6610Same product: Linux Linux Kernel
CVE-2024-50074Same product: Linux Linux Kernel
CVE-2024-0646Same product: Linux Linux Kernel
CVE-2023-3812Same product: Linux Linux Kernel

Affected Assets

linux
linux kernel
≤ 6.0
redhat
enterprise linux
9.0

Mitigating Controls

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly prevent reference-count coding errors via reviews, static analysis, and testing.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development can detect reference-count defects before release, providing partial mitigation.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle practices can include reference-counting rules and automated checks that reduce the likelihood of improper updates.

A.8.26 Application security requirements partial match
prevents

Application security requirements can mandate correct resource-lifetime management, indirectly addressing reference-count errors.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure system architecture principles encourage explicit resource-ownership models that mitigate reference-count misuse.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly prescribe correct increment/decrement patterns, covering most instances of this weakness.

A.8.32 Change management partial match
prevents

Change-management processes may catch reference-count issues introduced by modifications, but do not address the root coding flaw.

References