CVE-2026-23033 dmaengine: omap-dma: fix dma_pool resource leak in error paths
A resource leak in the OMAP DMA driver error paths can lead to memory exhaustion and denial of service on affected Linux systems.
- 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-2026-23033?
CVE-2026-23033 is a denial of service vulnerability in Linux, published on 31 Jan 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:
dmaengine: omap-dma: fix dma_pool resource leak in error paths
The dma_pool created by dma_pool_create() is not destroyed when dma_async_device_register() or of_dma_controller_register() fails, causing a resource leak in the probe error paths.
Add dma_pool_destroy() in both error paths to properly release the allocated dma_pool resource.
Which versions are affected by CVE-2026-23033?
How do I fix CVE-2026-23033?
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-2026-23033 being exploited?
There is no known exploitation of CVE-2026-23033 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-23033, DEBIAN-CVE-2026-23033, GHSA-8c2c-8qq9-wr25, ROOT-OS-DEBIAN-11-CVE-2026-23033, ROOT-OS-DEBIAN-12-CVE-2026-23033, ROOT-OS-DEBIAN-13-CVE-2026-23033 and 3 more.