CVE-2026-89964
Published Sep 16, 2026
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.
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References
Other References
https://git.kernel.org/stable/c/16a62a3f2128b3d86fefc082d8f631becd02bff5
https://git.kernel.org/stable/c/21f063e3c2b11fb9078ccdfd3b23634313ce4f0c
https://git.kernel.org/stable/c/3e2691eeee83a819125dba3f42c74e1b6730d5cd
https://git.kernel.org/stable/c/62d88e93ef5e1e04041e347945f7d7510eba1797
https://git.kernel.org/stable/c/68659b627770f3c8d8f578e8ddee78a07d5f1d0e
https://git.kernel.org/stable/c/8640ade22369e248f77fbdd31a9d71b338499eef
https://git.kernel.org/stable/c/8b585431a16cfb9d8f2955a9fa0787ce3dceb3c2
https://git.kernel.org/stable/c/bb10d54b74845eb4547baa1b9e908ecd32aa64e1
Frequently Asked Questions
What is CVE-2026-89964? +
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.
How do I check if I'm vulnerable to CVE-2026-89964? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.