CVE-2026-43428
kernel: USB: core: Limit the length of unkillable synchronous timeouts
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 8, 2026
Updated · June 28, 2026
Description
A flaw was found in the Linux kernel's USB core. The usb_control_msg(), usb_bulk_msg(), and usb_interrupt_msg() APIs allow for unlimited timeout durations. These APIs use uninterruptible waits, which can cause a task to hang indefinitely. This can lead to a denial of service (DoS) as the task cannot be terminated without physically disconnecting the USB device.
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-770 · Allocation of Resources Without Limits or Throttling