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.

Metrics

No CVSS v4.0

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

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References
Link Providers
https://git.kernel.org/stable/c/06d2bbc4c66c6b0e8a43728c4949026026a5be67 cve-icon cve-icon
https://git.kernel.org/stable/c/1015c27a5e1a63efae2b18a9901494474b4d1dc3 cve-icon cve-icon
https://git.kernel.org/stable/c/24b31a227f679a942d820840a4dea7f0c09a387f cve-icon cve-icon
https://git.kernel.org/stable/c/2d34cb4d1d6283b4be9c78f4a83ed6956d3069ec cve-icon cve-icon
https://git.kernel.org/stable/c/4e86f5b79e62ded7e3c3ebd688cf5775e618148a cve-icon cve-icon
https://git.kernel.org/stable/c/64f3d75633aedc12bdff220e9a4337177430bd9d cve-icon cve-icon
https://git.kernel.org/stable/c/659c0c7d50a4b0f6aa197c4c098cfd91daf63862 cve-icon cve-icon
https://git.kernel.org/stable/c/6c62935670acdbb7687ced20494923b66fbb0367 cve-icon cve-icon
History

Fri, 08 May 2026 14:45:00 +0000

Type Values Removed Values Added
Description 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.
Title USB: core: Limit the length of unkillable synchronous timeouts
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2026-05-08T14:22:01.027Z

Reserved: 2026-05-01T14:12:56.009Z

Link: CVE-2026-43428

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-08T15:16:54.990

Modified: 2026-05-08T15:16:54.990

Link: CVE-2026-43428

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.