CVE-2025-37803 udmabuf: fix a buf size overflow issue during udmabuf creation
An integer overflow in the Linux kernel udmabuf driver can lead to a buffer size miscalculation, potentially causing a denial of service.
- 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-2025-37803?
CVE-2025-37803 is a high-severity vulnerability in Linux kernel, published on 8 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:
udmabuf: fix a buf size overflow issue during udmabuf creation
by casting size_limit_mb to u64 when calculate pglimit.
Weakness: CWE-120
Which versions are affected by CVE-2025-37803?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2025-37803?
Apply the vendor's patch.
Is CVE-2025-37803 being exploited?
There is no known exploitation of CVE-2025-37803 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2025-37803, DEBIAN-CVE-2025-37803, GHSA-42fq-x79v-5vv5, ROOT-OS-DEBIAN-12-CVE-2025-37803, ROOT-OS-DEBIAN-13-CVE-2025-37803, ROOT-OS-UBUNTU-2204-CVE-2025-37803 and 2 more.