Cyber Resilience

CVE-2023-2430

Linux Kernel ≤ 6.2

Published
23 July 2023
Modified
06 March 2025
Patch / advisory
View advisory
CVSS Score v3.1 5.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score 0.0015 5th percentile
Risk Priority 41 floored blend · peak EPSS

Summary

CVE-2023-2430 is a medium-severity Improper Resource Locking (CWE-413) vulnerability in Linux Linux Kernel. Its CVSS base score is 5.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Endpoint Denial of Service (T1499); ranked at the 5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

A vulnerability was found due to missing lock for IOPOLL flaw in io_cqring_event_overflow() in io_uring.c in Linux Kernel. This flaw allows a local attacker with user privilege to trigger a Denial of Service threat.

CWE(s)
CWE-413CWE-667

Related Threats

MITRE ATT&CK Enterprise Techniques

T1499 Endpoint Denial of Service Impact
Adversaries may perform Endpoint Denial of Service (DoS) attacks to degrade or block the availability of services to users.
attack.mitre.org →
T1499.004 Application or System Exploitation Impact
Adversaries may exploit software vulnerabilities that can cause an application or system to crash and deny availability to users.
attack.mitre.org →
T1068 Exploitation for Privilege Escalation Privilege Escalation
Adversaries may exploit software vulnerabilities in an attempt to elevate privileges.
attack.mitre.org →
T1548 Abuse Elevation Control Mechanism Privilege Escalation
Adversaries may circumvent mechanisms designed to control privilege elevation to gain higher-level permissions.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

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CVE-2026-45924Same product: Linux Linux Kernel
CVE-2023-53031Same product: Linux Linux Kernel
CVE-2025-21944Same product: Linux Linux Kernel
CVE-2024-57903Same product: Linux Linux Kernel
CVE-2024-40972Same product: Linux Linux Kernel
CVE-2024-35999Same product: Linux Linux Kernel

Affected Assets

linux
linux kernel
6.2 · ≤ 6.2

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 (reviews, static analysis, coding standards) directly prevent improper locking defects from being introduced.

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 can detect locking defects but does not itself implement locking controls.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle requires proper resource management patterns that prevent improper locking.

A.8.26 Application security requirements partial match
prevents

Application security requirements can mandate exclusive-access controls and locking mechanisms.

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

Secure system architecture principles include concurrency and resource-locking design rules.

A.8.28 Secure coding partial match
prevents

Secure coding standards directly prohibit missing or incorrect resource locks.

A.8.32 Change management partial match
prevents

Change management may catch locking issues introduced by modifications but does not prevent the weakness itself.

References