CVE-2026-89869 media: qcom: iris: use disable_irq() during power-off
A race condition in the Qualcomm Iris VPU driver allows hardware register access after power-off, potentially causing system instability 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-2026-89869?
CVE-2026-89869 is a vulnerability in Linux, published on 16 Sep 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:
media: qcom: iris: use disable_irq() during power-off
The IRQ is registered as a threaded IRQ.
Using disable_irq_nosync() in iris_vpu_power_off() does not wait for an already queued threaded IRQ handler to complete before returning.
As a result, a threaded IRQ handler may still run after the VPU has been powered down and access hardware registers after power-off.
Replace disable_irq_nosync() with disable_irq() so the power-off path waits for any in-flight threaded IRQ handler to complete before returning.
Which versions are affected by CVE-2026-89869?
How do I fix CVE-2026-89869?
Apply the vendor's patch.
Is CVE-2026-89869 being exploited?
There is no known exploitation of CVE-2026-89869 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-89869, DEBIAN-CVE-2026-89869, GHSA-5mhw-wrx9-mqjj, UBUNTU-CVE-2026-89869.