Is CVE-2024-53150 (Linux Kernel Out-of-Bounds Read) being exploited in the wild?

Yes. CISA added CVE-2024-53150 to its Known Exploited Vulnerabilities catalogue on 9 April 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 read vulnerability in the USB-audio driver that allows a local, privileged attacker to obtain potentially sensitive information.

What “exploited in the wild” means for this CVE

CISA’s KEV listing is the practical signal that matters here: it means the issue is not just theoretical, but has credible evidence of active abuse. For CISA Known Exploited Vulnerabilities Catalog confirms the exploitation status, while the CVE Program is the canonical record for the vulnerability itself.

For defenders, “in the wild” should change priority immediately. The question is no longer whether the flaw is interesting, it is whether any Linux system with the vulnerable kernel path is reachable by a local attacker or a compromised user context, and whether that environment can tolerate sensitive information disclosure from kernel memory.

Why this Linux kernel flaw is operationally important

CVE-2024-53150 is an out-of-bounds read in the Linux kernel USB-audio driver, so the core issue is unauthorized memory disclosure rather than direct code execution. That still matters because kernel reads can reveal data that should never be observable to a local attacker, including pointers, object contents, or other sensitive state that helps with follow-on exploitation.

The exposure is especially relevant on multi-user systems, developer workstations, bastions, VDI images, and other hosts where local privilege boundaries matter. A flaw like this may not be the first step in an attack chain, but it can remove uncertainty for an attacker who is already on the box or who has reached a limited foothold through another weakness.

What responders should do next

The safest response is to treat the KEV entry as a prioritization trigger, not a paperwork item. Review whether affected kernels are present, whether USB-audio support is enabled or reachable, and whether any similar systems are exposed across fleets that have not yet been inventoried cleanly. The NIST National Vulnerability Database is useful for record tracking, but vendor guidance should remain the source of truth for version and remediation details.

If patching must wait, reduce exposure by limiting local access, tightening administrator use, and monitoring for unusual kernel, device, or privilege activity on the affected hosts. For a vulnerability that can disclose sensitive information, the remediation decision should also consider whether any secrets, sessions, or credentials resident on the system would make a successful read materially more valuable to an attacker.

Risk and Threat Considerations

This kind of flaw is dangerous because a local read primitive can be chained into broader compromise, especially when it helps an attacker learn layout, state, or data that improves later exploitation. In practice, the risk is not only the immediate disclosure, but the way disclosure can lower the cost of privilege escalation, persistence, or targeted follow-on abuse.

Failure mechanism: The USB-audio driver can read beyond intended bounds, exposing kernel memory contents to a local privileged attacker who can query or influence the vulnerable path.

Impact: Sensitive information may be exposed, and that disclosure can materially assist post-exploitation activity, including privilege escalation preparation, bypass planning, or further host compromise.

Standards & Framework Alignment

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

NIST SP 800-53 Rev 5, CIS Controls v8 and NIST CSF 2.0 set the governance and control requirements practitioners need to meet.

Framework	Control / Reference	Relevance
NIST SP 800-53 Rev 5	SI-2 — Flaw Remediation	Active kernel exploitation makes timely flaw remediation central.
	SI-4 — System Monitoring	Kernel exploitation needs host telemetry for unusual privilege and device activity.
Recommendation — Prioritise and track remediation for KEV-listed kernel flaws. Monitor affected hosts for suspicious kernel and device activity.
CIS Controls v8	CIS-7 — Continuous Vulnerability Management	KEV-listed exploitation requires fast inventory and remediation prioritisation.
	CIS-8 — Audit Log Management	Post-exploitation detection depends on retaining and reviewing host activity logs.
Recommendation — Identify exposed systems and accelerate remediation for exploited flaws. Centralise and review logs for signs of exploitation and follow-on abuse.
NIST CSF 2.0	DE.CM-01 — Networks and Network Services Monitored	Exploited kernel flaws require ongoing monitoring of host and service behaviour.
Recommendation — Monitor host behaviour for signs of exploitation or abnormal access.

Practitioner Guidance

What to prioritise: Treat KEV-listed kernel flaws as fleet-priority work. If the host class is interactive or privileged, exposure is usually more important than theoretical exploit complexity, because local attackers often only need one disclosure primitive to strengthen an existing foothold.

What to verify: Confirm whether affected kernels are deployed, whether USB-audio functionality is actually needed, and whether the affected hosts store high-value material such as admin sessions, signing material, or other secrets whose disclosure would expand blast radius.

Practitioner takeaway: For an actively exploited kernel vulnerability, the right question is not only “can it be abused,” but “what else becomes easier once an attacker can read kernel memory.”