CVE-2026-23470 drm/imagination: Fix deadlock in soft reset sequence
A deadlock in the Imagination DRM driver's soft reset sequence can cause a system hang, requiring a kernel patch to resolve.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-23470?
CVE-2026-23470 is a medium-severity denial of service vulnerability in Linux kernel, published on 3 Apr 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:
drm/imagination: Fix deadlock in soft reset sequence
The soft reset sequence is currently executed from the threaded IRQ handler, hence it cannot call disable_irq() which internally waits for IRQ handlers, i.e. itself, to complete.
Use disable_irq_nosync() during a soft reset instead.
Weakness: CWE-667
Which versions are affected by CVE-2026-23470?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-23470?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-23470 being exploited?
There is no known exploitation of CVE-2026-23470 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-23470, DEBIAN-CVE-2026-23470, GHSA-6vrx-35fp-7whc, ROOT-OS-DEBIAN-13-CVE-2026-23470, ROOT-OS-UBUNTU-2404-CVE-2026-23470, UBUNTU-CVE-2026-23470.