Vulnerabilities
- CVSS
- 5.5 Medium
- Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H- Risk score
- 44.0
- Published
- 2026-05-08
- Status
- Published
In the Linux kernel, the following vulnerability has been resolved:
USB: core: Limit the length of unkillable synchronous timeouts
The usb_control_msg(), usb_bulk_msg(), and usb_interrupt_msg() APIs in
usbcore allow unlimited timeout durations. And since they use
uninterruptible waits, this leaves open the possibility of hanging a
task for an indefinitely long time, with no way to kill it short of
unplugging the target device.
To prevent this sort of problem, enforce a maximum limit on the length
of these unkillable timeouts. The limit chosen here, somewhat
arbitrarily, is 60 seconds. On many systems (although not all) this
is short enough to avoid triggering the kernel's hung-task detector.
In addition, clear up the ambiguity of negative timeout values by
treating them the same as 0, i.e., using the maximum allowed timeout.
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.
Coverage 6
threat-intel
Multiple vulnerabilities have been discovered in the Linux kernel of SUSE. Several of these vulnerabilities allow for privilege escalation, data confidentiality breaches, and data integrity issues. These vulnerabilities…
vulnerability
Multiple vulnerabilities have been discovered in the Linux kernel of Ubuntu. Some of these vulnerabilities allow for privilege escalation, data confidentiality compromise, and data integrity compromise. These vulnerabili…
vulnerability
Multiple vulnerabilities have been discovered in the Linux kernel of Ubuntu. Several of these vulnerabilities allow for privilege escalation, data confidentiality breaches, and a security issue not specified by the publi…
vulnerability
Multiple vulnerabilities have been discovered in the Linux kernel of Ubuntu. Some of these vulnerabilities allow for privilege escalation, data confidentiality breaches, and data integrity compromise. These vulnerabiliti…
vulnerability
Multiple vulnerabilities have been discovered in the SUSE Linux kernel. Some of these vulnerabilities allow for data confidentiality and integrity breaches, as well as bypassing security policies and causing denial of se…
threat-intel
Multiple vulnerabilities have been discovered in the Linux kernel of Ubuntu. Some of these vulnerabilities allow for privilege escalation, data confidentiality breaches, and denial of service attacks. The vulnerabilities…
Advisories and references