CVE-2026-98430 RDMA/efa: Keep admin queues alive while IRQ is registered
A race condition in the Linux kernel EFA driver allows local attackers to cause a denial of service by triggering a use-after-free in the IRQ handler.
- 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-2026-98430?
CVE-2026-98430 is a vulnerability in Linux, published on 14 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:
RDMA/efa: Keep admin queues alive while IRQ is registered
The management IRQ handler accesses both the admin completion queue and the async event queue. The driver registered the IRQ before constructing these queues and destroyed them before freeing the IRQ, so the handler's lifetime was not contained by the resources it accesses.
Initialize the queues with interrupts masked, request the IRQ, and then switch to interrupt mode. On removal, reset the device and free the IRQ before destroying the queues. Also reset the device before destroying the queues if IRQ registration fails, because the device already has their DMA addresses.
Which versions are affected by CVE-2026-98430?
How do I fix CVE-2026-98430?
Apply the vendor's patch.
Is CVE-2026-98430 being exploited?
There is no known exploitation of CVE-2026-98430 in the wild and no public exploit code.
Sources
Also known as AZL-108164, BELL-CVE-2026-98430, DEBIAN-CVE-2026-98430, GHSA-qx8x-g48g-m39m, UBUNTU-CVE-2026-98430.