CVE-2026-74309: vdpa/octeon_ep: fix IRQ-to-ring mapping in interrupt handler
Published Aug 15, 2026
·Updated
In the Linux kernel, the following vulnerability has been resolved:
vdpa/octeonep: fix IRQ-to-ring mapping in interrupt handler
Look up the IRQ index in octhw->irqs instead of assuming irq - irqs[0]. This supports non-contiguous IRQ numbers and avoids incorrect ring indexing when irqs[0] is not the base.
Affected Software
1 affected component
Linux Linux kernel
Event History
Aug 15, 2026
CVE Published
via MITRE·05:58 AM
Data Sourced
via MITRE·05:58 AM
DescriptionSeverity
Data Sourced
via NVD·06:22 AM
DescriptionSeverity
Frequently Asked Questions
1
What is the severity of CVE-2026-74309?
CVE-2026-74309 has a risk rating of 27.
2
What systems are affected by CVE-2026-74309?
CVE-2026-74309 affects the Linux kernel specifically related to the vdpa/octeon_ep module.
3
How do I fix CVE-2026-74309?
To fix CVE-2026-74309, update the Linux kernel to the latest stable version that contains the patch.
4
What type of vulnerability is CVE-2026-74309?
CVE-2026-74309 is a vulnerability related to incorrect IRQ-to-ring mapping in an interrupt handler.
5
When was CVE-2026-74309 published?
CVE-2026-74309 was published on August 15, 2026.