CVE-2026-43428
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.
Does this matter?
Lower severity and a low EPSS score (0.12%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.12% probability · 2th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/06d2bbc4c66c6b0e8a43728c4949026026a5be67Patch
- https://git.kernel.org/stable/c/1015c27a5e1a63efae2b18a9901494474b4d1dc3Patch
- https://git.kernel.org/stable/c/24b31a227f679a942d820840a4dea7f0c09a387fPatch
- https://git.kernel.org/stable/c/2d34cb4d1d6283b4be9c78f4a83ed6956d3069ecPatch
- https://git.kernel.org/stable/c/4e86f5b79e62ded7e3c3ebd688cf5775e618148aPatch
- https://git.kernel.org/stable/c/64f3d75633aedc12bdff220e9a4337177430bd9dPatch
- https://git.kernel.org/stable/c/659c0c7d50a4b0f6aa197c4c098cfd91daf63862Patch
- https://git.kernel.org/stable/c/6c62935670acdbb7687ced20494923b66fbb0367Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.