CVE-2026-43428
USB: core: Limit the length of unkillable synchronous timeouts
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.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| Linux Linux |
≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2; < 4e86f5b79e62ded7e3c3ebd688cf5775e618148a (affected, git) ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2; < 06d2bbc4c66c6b0e8a43728c4949026026a5be67 (affected, git) ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2; < 6c62935670acdbb7687ced20494923b66fbb0367 (affected, git) ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2; < 659c0c7d50a4b0f6aa197c4c098cfd91daf63862 (affected, git) ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2; < 24b31a227f679a942d820840a4dea7f0c09a387f (affected, git) ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2; < 64f3d75633aedc12bdff220e9a4337177430bd9d (affected, git) ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2; < 2d34cb4d1d6283b4be9c78f4a83ed6956d3069ec (affected, git) ≥ 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2; < 1015c27a5e1a63efae2b18a9901494474b4d1dc3 (affected, git) Other versions: unaffected |
CNA: Linux |
| Linux Linux |
2.6.12 (affected) ≥ 0; < 2.6.12 (unaffected, semver) ≥ 5.10.253; ≤ 5.10.* (unaffected, semver) ≥ 5.15.203; ≤ 5.15.* (unaffected, semver) ≥ 6.1.167; ≤ 6.1.* (unaffected, semver) ≥ 6.6.130; ≤ 6.6.* (unaffected, semver) ≥ 6.12.78; ≤ 6.12.* (unaffected, semver) ≥ 6.18.19; ≤ 6.18.* (unaffected, semver) ≥ 6.19.9; ≤ 6.19.* (unaffected, semver) ≥ 7.0; ≤ * (unaffected, original_commit_for_fix) Other versions: affected |
CNA: Linux |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://git.kernel.org/stable/c/4e86f5b79e62ded7e3c3ebd688cf5775e618148aCNA: Linux
- https://git.kernel.org/stable/c/06d2bbc4c66c6b0e8a43728c4949026026a5be67CNA: Linux
- https://git.kernel.org/stable/c/6c62935670acdbb7687ced20494923b66fbb0367CNA: Linux
- https://git.kernel.org/stable/c/659c0c7d50a4b0f6aa197c4c098cfd91daf63862CNA: Linux
- https://git.kernel.org/stable/c/24b31a227f679a942d820840a4dea7f0c09a387fCNA: Linux
- https://git.kernel.org/stable/c/64f3d75633aedc12bdff220e9a4337177430bd9dCNA: Linux
- https://git.kernel.org/stable/c/2d34cb4d1d6283b4be9c78f4a83ed6956d3069ecCNA: Linux
- https://git.kernel.org/stable/c/1015c27a5e1a63efae2b18a9901494474b4d1dc3CNA: Linux
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