{"id":"CVE-2024-56545","url":"https://www.cyber-defence.io/tools/cve/CVE-2024-56545","generatedAt":"2026-10-28T00:51:20.634Z","title":"In the Linux kernel, the following vulnerability has been resolved: HID: hyperv: streamline driver probe to avoid devres issues It was found that unloading 'hid_hyperv' module results in a devres complaint: ... hv_vmbus: unregistering driver hid_hyperv…","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nHID: hyperv: streamline driver probe to avoid devres issues\n\nIt was found that unloading 'hid_hyperv' module results in a devres\ncomplaint:\n\n ...\n hv_vmbus: unregistering driver hid_hyperv\n ------------[ cut here ]------------\n WARNING: CPU: 2 PID: 3983 at drivers/base/devres.c:691 devres_release_group+0x1f2/0x2c0\n ...\n Call Trace:\n  <TASK>\n  ? devres_release_group+0x1f2/0x2c0\n  ? __warn+0xd1/0x1c0\n  ? devres_release_group+0x1f2/0x2c0\n  ? report_bug+0x32a/0x3c0\n  ? handle_bug+0x53/0xa0\n  ? exc_invalid_op+0x18/0x50\n  ? asm_exc_invalid_op+0x1a/0x20\n  ? devres_release_group+0x1f2/0x2c0\n  ? devres_release_group+0x90/0x2c0\n  ? rcu_is_watching+0x15/0xb0\n  ? __pfx_devres_release_group+0x10/0x10\n  hid_device_remove+0xf5/0x220\n  device_release_driver_internal+0x371/0x540\n  ? klist_put+0xf3/0x170\n  bus_remove_device+0x1f1/0x3f0\n  device_del+0x33f/0x8c0\n  ? __pfx_device_del+0x10/0x10\n  ? cleanup_srcu_struct+0x337/0x500\n  hid_destroy_device+0xc8/0x130\n  mousevsc_remove+0xd2/0x1d0 [hid_hyperv]\n  device_release_driver_internal+0x371/0x540\n  driver_detach+0xc5/0x180\n  bus_remove_driver+0x11e/0x2a0\n  ? __mutex_unlock_slowpath+0x160/0x5e0\n  vmbus_driver_unregister+0x62/0x2b0 [hv_vmbus]\n  ...\n\nAnd the issue seems to be that the corresponding devres group is not\nallocated. Normally, devres_open_group() is called from\n__hid_device_probe() but Hyper-V HID driver overrides 'hid_dev->driver'\nwith 'mousevsc_hid_driver' stub and basically re-implements\n__hid_device_probe() by calling hid_parse() and hid_hw_start() but not\ndevres_open_group(). hid_device_probe() does not call __hid_device_probe()\nfor it. Later, when the driver is removed, hid_device_remove() calls\ndevres_release_group() as it doesn't check whether hdev->driver was\ninitially overridden or not.\n\nThe issue seems to be related to the commit 62c68e7cee33 (\"HID: ensure\ntimely release of driver-allocated resources\") but the commit itself seems\nto be correct.\n\nFix the issue by dropping the 'hid_dev->driver' override and using\nhid_register_driver()/hid_unregister_driver() instead. Alternatively, it\nwould have been possible to rely on the default handling but\nHID_CONNECT_DEFAULT implies HID_CONNECT_HIDRAW and it doesn't seem to work\nfor mousevsc as-is.","published":"2024-12-27T14:15:34.000Z","lastModified":"2026-10-03T11:17:32.000Z","status":"Modified","sourceIdentifier":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","cvss":{"version":"3.1","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":[],"affected":["linux/linux kernel"],"epss":{"score":0.00218,"percentile":0.12159,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://git.kernel.org/stable/c/19a9457e5e210e408c1f8865b5d93c5a2c90409d","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/3d48d0fbaaa74a04fb9092780a3f83dc4f3f8160","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/4c419126cf71ca1f358ec0b8ccc448928719d502","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/66ef47faa90d838cda131fe1f7776456cc3b59f2","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a216f6dc0444c3bd900bca66b9f21467d08e3ed3","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b03e713a400aeb5f969bab4daf47a7402d0df814","tags":["Patch"],"source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/b7c074d21fe8a8ee3b4f866a12c72cad6a5826eb","source":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-56545","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}