HID: hid-lenovo-go: cancel cfg_setup work in hid_go_cfg_remove()

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Summary

CVECVE-2026-64595
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-06 08:16:35 UTC
Updated2026-08-06 08:16:35 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: HID: hid-lenovo-go: cancel cfg_setup work in hid_go_cfg_remove() hid_go_cfg_probe() initialises drvdata.go_cfg_setup and schedules it to run 2 ms later: INIT_DELAYED_WORK(&drvdata.go_cfg_setup, &cfg_setup); schedule_delayed_work(&drvdata.go_cfg_setup, msecs_to_jiffies(2)); cfg_setup() dereferences drvdata.hdev to issue MCU command requests. hid_go_cfg_remove() tears down sysfs and stops the HID device, but never drains the delayed work. If the device is unbound within the 2 ms scheduling delay (a probe failure rolling back via remove, or a fast rmmod after probe), the work fires after hid_destroy_device() has dropped its reference and released the underlying hdev struct, leaving cfg_setup() with a stale drvdata.hdev pointer. Mirror the sibling driver hid-lenovo-go-s.c, whose hid_gos_cfg_remove() already calls cancel_delayed_work_sync() on its analogous work, and drain go_cfg_setup at the top of hid_go_cfg_remove(). The cancel must come before guard(mutex)(&drvdata.cfg_mutex) because cfg_setup() acquires that mutex; reversing the order would deadlock.

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected d69ccfcbc9551988190895bc125a8bf709aa5931 3e7761f7bf9f0187bb18cf52b5119bdf4940e686 git Not specified
CNA Linux Linux affected d69ccfcbc9551988190895bc125a8bf709aa5931 73fde0cbff7d9d618591774a12c23434232752c1 git Not specified
CNA Linux Linux affected 7.1 Not specified
CNA Linux Linux unaffected 7.1 semver Not specified
CNA Linux Linux unaffected 7.1.4 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2-rc1 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/73fde0cbff7d9d618591774a12c23434232752c1 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/3e7761f7bf9f0187bb18cf52b5119bdf4940e686 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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