CVE-2026-98721 mtd: rawnand: cadence: Initialize IRQ state before requesting IRQ
A race condition in the Cadence NAND driver allows uninitialized state access, potentially causing a system crash or denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-98721?
CVE-2026-98721 is a vulnerability in Linux, published on 18 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
mtd: rawnand: cadence: Initialize IRQ state before requesting IRQ
The Cadence NAND interrupt handler uses both the IRQ lock and completion object. Registering the IRQ before initializing them leaves a window in which a pending interrupt can access uninitialized synchronization state.
Initialize them before registering the handler.
Which versions are affected by CVE-2026-98721?
How do I fix CVE-2026-98721?
Apply the vendor's patch.
Is CVE-2026-98721 being exploited?
There is no known exploitation of CVE-2026-98721 in the wild and no public exploit code.
Sources
Also known as AZL-109358, BELL-CVE-2026-98721, DEBIAN-CVE-2026-98721, GHSA-wr98-xxcm-8gqw, UBUNTU-CVE-2026-98721.