Description
In the Linux kernel, the following vulnerability has been resolved:

net: libwx: use request_irq for VF misc interrupt

Currently, request_threaded_irq() is used with a primary handler but a
NULL threaded handler, while also setting the IRQF_ONESHOT flag. This
specific combination triggers a WARNING since the commit aef30c8d569c
("genirq: Warn about using IRQF_ONESHOT without a threaded handler").

WARNING: kernel/irq/manage.c:1502 at __setup_irq+0x4fa/0x760

Fix the issue by switching to request_irq(), which is the appropriate
interface or a non-threaded interrupt handler, and removing the
unnecessary IRQF_ONESHOT flag.
Published: 2026-06-08
Score: n/a
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The Linux kernel commit that triggered this CVE replaced an incorrect use of request_threaded_irq()—which was supplied with a NULL threaded handler and the IRQF_ONESHOT flag—by a proper request_irq() call or a non-threaded handler. The combination previously caused a kernel warning but does not expose an escalation or denial‑of‑service vector. The flaw falls under CWE‑628, reflecting misuse of an API that could lead to instability rather than a direct vulnerability.

Affected Systems

All Linux kernel releases that include the libwx VF misc interrupt implementation prior to the patch. The affected vendor is the Linux kernel project, and any derivative distributions that ship the unpatched kernel version are also implicated.

Risk and Exploitability

Because the issue manifests only as a kernel warning and the EPSS score is unavailable, there is little evidence of exploitation. The vulnerability is not listed in the CISA KEV catalog, further indicating low likelihood of attack. Applying the patch removes the warning and restores correct interrupt handling, eliminating any indirect impact on system stability.

Generated by OpenCVE AI on June 9, 2026 at 02:57 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the Linux kernel to a version containing the commit that changes the interrupt registration to use request_irq() or a non‑threaded handler and removes the unnecessary IRQF_ONESHOT flag.
  • If the kernel cannot be upgraded promptly, modify any custom driver code that invokes VF misc interrupts to adopt request_irq() without the IRQF_ONESHOT flag or use an alternative non‑threaded handler.
  • Continuously monitor kernel logs for WARN records related to VF misc interrupts to confirm resolution and detect any regressions.

Generated by OpenCVE AI on June 9, 2026 at 02:57 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 09 Jun 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-628
References

Mon, 08 Jun 2026 17:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: net: libwx: use request_irq for VF misc interrupt Currently, request_threaded_irq() is used with a primary handler but a NULL threaded handler, while also setting the IRQF_ONESHOT flag. This specific combination triggers a WARNING since the commit aef30c8d569c ("genirq: Warn about using IRQF_ONESHOT without a threaded handler"). WARNING: kernel/irq/manage.c:1502 at __setup_irq+0x4fa/0x760 Fix the issue by switching to request_irq(), which is the appropriate interface or a non-threaded interrupt handler, and removing the unnecessary IRQF_ONESHOT flag.
Title net: libwx: use request_irq for VF misc interrupt
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References

Subscriptions

Linux Linux Kernel
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-06-08T15:46:24.446Z

Reserved: 2026-05-13T15:03:33.110Z

Link: CVE-2026-46297

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-08T17:16:48.160

Modified: 2026-06-08T17:16:48.160

Link: CVE-2026-46297

cve-icon Redhat

Severity :

Publid Date: 2026-06-08T00:00:00Z

Links: CVE-2026-46297 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-06-09T03:00:14Z

Weaknesses