CVE-2025-38479 dmaengine: fsl-edma: free irq correctly in remove path
A missing check in the fsl-edma driver causes a kernel warning and potential crash during device removal on i.MX9 platforms.
- 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-2025-38479?
CVE-2025-38479 is a high-severity vulnerability in Linux kernel, published on 18 Apr 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:
dmaengine: fsl-edma: free irq correctly in remove path
Add fsl_edma->txirq/errirq check to avoid below warning because no errirq at i.MX9 platform. Otherwise there will be kernel dump: WARNING: CPU: 0 PID: 11 at kernel/irq/devres.c:144 devm_free_irq+0x74/0x80 Modules linked in: CPU: 0 UID: 0 PID: 11 Comm: kworker/u8:0 Not tainted 6.12.0-rc7#18 Hardware name: NXP i.MX93 11X11 EVK board (DT) Workqueue: events_unbound deferred_probe_work_func pstate: 60400009 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : devm_free_irq+0x74/0x80 lr : devm_free_irq+0x48/0x80 Call trace: devm_free_irq+0x74/0x80 (P) devm_free_irq+0x48/0x80 (L) fsl_edma_remove+0xc4/0xc8 platform_remove+0x28/0x44 device_remove+0x4c/0x80
Which versions are affected by CVE-2025-38479?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-38479?
Apply the vendor's patch.
Is CVE-2025-38479 being exploited?
There is no known exploitation of CVE-2025-38479 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-38479, DEBIAN-CVE-2025-38479, GHSA-4g98-mx94-f4wj, UBUNTU-CVE-2025-38479.