Is CVE-2024-53104 (Linux Kernel Out-of-Bounds Write) being exploited in the wild?

By NHI Mgmt Group Editorial Team Updated October 19, 2026 Domain: Threats, Abuse & Incident Response

Yes. CISA added CVE-2024-53104 to its Known Exploited Vulnerabilities catalogue on 5 February 2025, which it does only when there is reliable evidence of active exploitation. CISA has not linked it to known ransomware campaigns. Linux kernel contains an out-of-bounds write vulnerability in the uvc_parse_streaming component of the USB Video Class (UVC) driver that could allow for physical escalation of privilege.

How KEV status answers the real-world exploitation question

CISA KEV inclusion is the strongest public signal here because it reflects confirmed active exploitation, not just a theoretical weakness. For this CVE, the practical question is not whether the Linux kernel flaw is serious, but whether defenders should treat it as an urgent exposure already being used in the wild.

The right operational interpretation is that exposure assessment should be immediate and asset-specific. A Linux fleet can be broadly patched, yet only systems that actually expose the affected USB Video Class path, accept untrusted physical device access, or are reachable by users with local or physical access need to be prioritised first.

For vulnerability triage and tracking, the most reliable starting points are the CVE Program for the identifier itself, and the CISA Known Exploited Vulnerabilities Catalog for the exploitation status that drives remediation urgency.

Why this Linux kernel flaw matters operationally

The underlying issue is an out-of-bounds write in the kernel’s UVC parsing path, which means the weakness sits in low-level code that processes device input. That matters because kernel memory corruption defects often become privilege-escalation issues rather than ordinary application crashes, especially when the attacker can influence a device or trigger the parser through physical access.

In practical terms, the attack surface is narrower than an internet-facing service but still serious. Systems that rely on laptops, kiosks, lab machines, conference-room systems, or other endpoints where peripherals can be attached are exposed to a different class of risk than headless servers, and that distinction should shape prioritisation.

When you need context on the underlying weakness class, the CWE Top 25 Guide is useful for understanding why memory-safety flaws remain high impact, and the Linux Server Hardening Guide helps anchor the broader endpoint hardening measures that reduce exposure around kernel-level weaknesses.

What defenders should do when exploitation is confirmed

Once a CVE is in KEV, the response goal shifts from routine patch management to exposure reduction and compromise checking. That means confirming whether the vulnerable kernel path exists on any supported Linux asset, applying vendor remediation as soon as operationally possible, and treating delay as an exception that needs compensating controls and explicit risk acceptance.

If patching must wait, reduce the chance of abuse by restricting physical access, limiting peripheral attachment on sensitive endpoints, and tightening monitoring around unexpected device events or privilege changes. Because this issue can produce escalation of privilege, it is also sensible to review logs and endpoint telemetry for signs of unusual local activity on systems that may have been exposed before remediation.

For a structured response workflow, the Zero-Day and Exploited Vulnerabilities Guide is the most relevant internal reference for emergency triage, and the Vulnerability Management Guide is the better fit for prioritisation, exception handling, and verification after remediation.

Risk and Threat Considerations

This flaw combines confirmed exploitation with kernel-level memory corruption, so the risk is not limited to service disruption. A successful local or physically proximate trigger can convert a lower-privileged foothold into higher privilege, which is why defender attention should stay on endpoints where device access is plausible rather than only on centrally managed servers.

Failure mechanism: The vulnerable UVC parsing logic can be driven into writing outside the intended bounds of memory, which can corrupt kernel state and open a path to privilege escalation or crash conditions.

Impact: Successful exploitation can undermine endpoint trust, enable local elevation of privilege, and create a foothold for follow-on persistence or lateral movement if the compromised system is not quickly contained.

Standards & Framework Alignment

This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.

MITRE ATT&CK addresses the attack and risk surface, while CIS Controls v8, NIST SP 800-53 Rev 5 and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.

Framework	Control / Reference	Relevance
CIS Controls v8	CIS-7 — Continuous Vulnerability Management	Active exploitation makes exposure tracking and remediation prioritisation central.
Recommendation — Prioritise KEV-listed Linux hosts for rapid remediation and verified exposure tracking.
NIST SP 800-53 Rev 5	SI-2 — Flaw Remediation	This CVE requires timely remediation and exception handling for exposed systems.
	SI-4 — System Monitoring	Confirming earlier compromise depends on monitoring for suspicious endpoint and privilege activity.
Recommendation — Remediate the kernel flaw quickly and document compensating controls when patching waits. Monitor exposed Linux endpoints for privilege-escalation signs and unusual device activity.
NIST CSF 2.0	ID.RA-01 — Asset Vulnerability Identification	The question is fundamentally about identifying vulnerable assets that are actively exploited.
Recommendation — Identify affected Linux assets and rank them by exposure to physical device access.
MITRE ATT&CK	T1068 — Exploitation for Privilege Escalation	The vulnerability’s practical consequence is physical or local privilege escalation.
Recommendation — Map alerts and hunting hypotheses to privilege-escalation behavior on exposed hosts.

Practitioner Guidance

What to prioritise: Start with Linux systems that permit user-driven peripheral access, shared workstations, developer laptops, and any endpoint where physical access is not tightly controlled. Those are the places where this class of flaw is most likely to matter operationally.

What to verify: Confirm kernel exposure, patch state, and whether any affected hosts show suspicious local privilege activity before or after the KEV date. If a host was reachable and unpatched, assume compromise assessment is warranted even if no alert fired.

Practitioner takeaway: A KEV-listed kernel bug should be handled as an active exposure problem first and a patching problem second, because the main defender error is usually underestimating where the real attack path exists.

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NHIMG Editorial Note
Reviewed and updated by the NHIMG editorial team on October 19, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org