CVE-2025-37810 usb: dwc3: gadget: check that event count does not exceed event buffer length

High 7.8 Published 8 May 2025 Updated 11 May 2026

A missing bounds check in the Linux kernel DWC3 USB gadget driver allows out-of-bounds memory access, potentially causing a system crash.

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-2025-37810?

CVE-2025-37810 is a high-severity memory corruption vulnerability in Debian Debian Linux, 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:

usb: dwc3: gadget: check that event count does not exceed event buffer length

The event count is read from register DWC3_GEVNTCOUNT. There is a check for the count being zero, but not for exceeding the event buffer length. Check that event count does not exceed event buffer length, avoiding an out-of-bounds access when memcpy'ing the event. Crash log: Unable to handle kernel paging request at virtual address ffffffc0129be000 pc : __memcpy+0x114/0x180 lr : dwc3_check_event_buf+0xec/0x348 x3 : 0000000000000030 x2 : 000000000000dfc4 x1 : ffffffc0129be000 x0 : ffffff87aad60080 Call trace: __memcpy+0x114/0x180 dwc3_interrupt+0x24/0x34

Weakness: CWE-787

Which versions are affected by CVE-2025-37810?

It affects 2 products.

Products include Debian Debian Linux, Linux kernel.

How do I fix CVE-2025-37810?

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-2025-37810 being exploited?

There is no known exploitation of CVE-2025-37810 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as BELL-CVE-2025-37810, DEBIAN-CVE-2025-37810, GHSA-rpfr-3prf-w7f2, ROOT-OS-DEBIAN-12-CVE-2025-37810, ROOT-OS-UBUNTU-2204-CVE-2025-37810, ROOT-OS-UBUNTU-2404-CVE-2025-37810 and 1 more.