The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - irqchip/sifive-plic: Fix frozen interrupt due to affinity setting PLIC ignores interrupt completion     message for disabled interrupt, explained by the specification: The PLIC signals it has completed     executing an interrupt handler by writing the interrupt ID it received from the claim to the     claim/complete register. The PLIC does not check whether the completion ID is the same as the last claim     ID for that target. If the completion ID does not match an interrupt source that is currently enabled for     the target, the completion is silently ignored. This caused problems in the past, because an interrupt can     be disabled while still being handled and plic_irq_eoi() had no effect. That was fixed by checking if the     interrupt is disabled, and if so enable it, before sending the completion message. That check is done with     irqd_irq_disabled(). However, that is not sufficient because the enable bit for the handling hart can be     zero despite irqd_irq_disabled(d) being false. This can happen when affinity setting is changed while a     hart is still handling the interrupt. This problem is easily reproducible by dumping a large file to uart     (which generates lots of interrupts) and at the same time keep changing the uart interrupt's affinity     setting. The uart port becomes frozen almost instantaneously. Fix this by checking PLIC's enable bit     instead of irqd_irq_disabled(). (CVE-2026-23287)

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Linux Distros Unpatched Vulnerability : CVE-2026-23287

high Nessus Plugin ID 303603

Version 1.2

Version 1.1

Version 1.2 Mar 26, 2026, 1:29 AM CVSS metrics ("CVSSv2 score" set to 4.9) CVSS metrics ("CVSSv2 vector" set to "CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C") Detection (updated detection logic) Plugin metadata Plugin Feed: 202603260129
Version 1.1 Mar 25, 2026, 5:10 PM New Plugin Feed: 202603251710