CVE-2026-72148 dmaengine: dw-edma: Add spinlock to protect DONE_INT_MASK and ABORT_INT_MASK
Concurrent DMA channel operations can cause race conditions in shared interrupt mask registers, potentially leading to 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-2026-72148?
CVE-2026-72148 is a high-severity vulnerability in Linux, published on 15 Aug 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: dw-edma: Add spinlock to protect DONE_INT_MASK and ABORT_INT_MASK
The DONE_INT_MASK and ABORT_INT_MASK registers are shared by all DMA channels, and modifying them requires a read-modify-write sequence. Because this operation is not atomic, concurrent calls to dw_edma_v0_core_start() can introduce race conditions if two channels update these registers simultaneously.
Add a spinlock to serialize access to these registers and prevent race conditions.
[den: update dw_edma.lock comment]
Which versions are affected by CVE-2026-72148?
How do I fix CVE-2026-72148?
Apply the vendor's patch.
Is CVE-2026-72148 being exploited?
There is no known exploitation of CVE-2026-72148 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72148, DEBIAN-CVE-2026-72148, GHSA-wjmg-69jj-9p9g, UBUNTU-CVE-2026-72148.