CVE-2026-89964

/// Technical description

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

parisc: eisa: Fix infinite loop when parsing invalid IRQ value

When an invalid value is passed via the "eisa_irq_edge=" kernel

command line parameter (e.g. "eisa_irq_edge=16,5"), eisa_irq_setup()

prints an error message and continues without advancing the current

position. As a result the same invalid value is parsed again and

again, causing an infinite loop while the kernel boots.

Advance to the next comma-separated entry, or stop parsing when there

is no next entry, before continuing so that the remaining entries are

processed normally.

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References