CVE-2026-80884 ntb: Store original DMA address for future release
A Linux kernel bug in the NTB driver mishandles DMA addresses, potentially causing memory corruption or crashes when releasing resources.
- 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-2026-80884?
CVE-2026-80884 is a memory corruption vulnerability in Linux, published on 4 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:
ntb: Store original DMA address for future release
The DMA API requires that dma_free_attrs receive the exact dma_handle originally returned by the allocation function. Do not modify it.
Which versions are affected by CVE-2026-80884?
How do I fix CVE-2026-80884?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-80884 being exploited?
There is no known exploitation of CVE-2026-80884 in the wild and no public exploit code.
Sources
Also known as AZL-99626, BELL-CVE-2026-80884, DEBIAN-CVE-2026-80884, GHSA-44m4-vqfj-mwrf, UBUNTU-CVE-2026-80884.