CVE-2026-98767
kernel: usb: dwc3: gadget: fix IRQ storm on invalid event buffer count
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 18, 2026
Updated · October 23, 2026
Description
A flaw was found in the Linux kernel's DWC3 USB gadget driver. When an invalid event buffer count exceeding the buffer size is encountered, the driver fails to acknowledge and clear the hardware interrupt source before returning. This leaves the interrupt line continuously asserted, triggering an interrupt request (IRQ) storm of unhandled interrupts. This condition ultimately causes a kernel panic, resulting in a system Denial of Service (DoS).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 5.1CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-390 · Detection of Error Condition Without Action