CVE-2026-93041 dmaengine: dw-edma: Serialize abort state updates
A race condition in the Linux kernel DW eDMA driver can strand queued descriptors, causing a denial of service for DMA operations.
- 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-2026-93041?
CVE-2026-93041 is a vulnerability in Linux, published on 17 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:
dmaengine: dw-edma: Serialize abort state updates
dw_edma_abort_interrupt() drops vc.lock before changing request and status. issue_pending() can acquire the lock in that small window, observe the old busy state, and skip starting queued descriptors. Then the abort handler overwrites the channel status as idle, leaving the new descriptors stranded for good.
Keep descriptor completion and the state transition in the same critical section.
Which versions are affected by CVE-2026-93041?
How do I fix CVE-2026-93041?
Apply the vendor's patch.
Is CVE-2026-93041 being exploited?
There is no known exploitation of CVE-2026-93041 in the wild and no public exploit code.
Sources
Also known as AZL-102653, BELL-CVE-2026-93041, DEBIAN-CVE-2026-93041, GHSA-fxf6-5wpw-x6fh, UBUNTU-CVE-2026-93041.