CVE-2026-31757
kernel: usb: misc: usbio: Fix URB memory leak on submit failure
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 1, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel. Specifically, within the USB subsystem (usbio), a memory leak occurs when a Universal Serial Bus (USB) Request Block (URB) submission fails during the device probing process. This failure to free the allocated URB memory can lead to a gradual depletion of system resources, potentially impacting system stability and performance.
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-772 · Missing Release of Resource after Effective Lifetime