CVE-2025-37977 scsi: ufs: exynos: Disable iocc if dma-coherent property isn't set
A misconfiguration in the Exynos UFS driver can cause random cache stability issues and system instability if the dma-coherent property is missing.
- 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-2025-37977?
CVE-2025-37977 is a high-severity denial of service vulnerability in Linux kernel, published on 20 May 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:
scsi: ufs: exynos: Disable iocc if dma-coherent property isn't set
If dma-coherent property isn't set then descriptors are non-cacheable and the iocc shareability bits should be disabled. Without this UFS can end up in an incompatible configuration and suffer from random cache related stability issues.
Which versions are affected by CVE-2025-37977?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-37977?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-37977 being exploited?
There is no known exploitation of CVE-2025-37977 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-37977, DEBIAN-CVE-2025-37977, GHSA-h9rr-37x4-c624, ROOT-OS-DEBIAN-12-CVE-2025-37977, ROOT-OS-UBUNTU-2404-CVE-2025-37977, UBUNTU-CVE-2025-37977.