CVE-2025-38043 firmware: arm_ffa: Set dma_mask for ffa devices
Missing DMA mask configuration in the Linux kernel ARM FFA driver causes a kernel warning and potential denial of service during DMA allocation.
- 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-2025-38043?
CVE-2025-38043 is a medium-severity vulnerability in Debian Debian Linux, published on 18 Jun 2025. 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:
firmware: arm_ffa: Set dma_mask for ffa devices
Set dma_mask for FFA devices, otherwise DMA allocation using the device pointer lead to following warning:
WARNING: CPU: 1 PID: 1 at kernel/dma/mapping.c:597 dma_alloc_attrs+0xe0/0x124
Which versions are affected by CVE-2025-38043?
It affects 2 products.
Products include Debian Debian Linux, Linux kernel.
How do I fix CVE-2025-38043?
Apply the vendor's patch.
Is CVE-2025-38043 being exploited?
There is no known exploitation of CVE-2025-38043 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as AZL-63932, BELL-CVE-2025-38043, DEBIAN-CVE-2025-38043, GHSA-mfmm-9g77-7q23, ROOT-OS-DEBIAN-12-CVE-2025-38043, ROOT-OS-UBUNTU-2204-CVE-2025-38043 and 2 more.