{"cve":"CVE-2026-64478","nvd":{"published":"2026-07-25T10:17:33.350","modified":"2026-08-17T05:17:53.523","status":"Received","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nALSA: usb-audio: avoid kobject path lookup in DualSense match\n\nThe DualSense jack-detection input handler verifies that a matching input\ndevice belongs to the same physical controller by building kobject path\nstrings for both the input device and the USB audio device, then comparing\nthe path prefix.\n\nThis was observed when a weak physical connection caused the controller\nto rapidly disconnect and reconnect. During that repeated hotplug,\nsnd_dualsense_ih_match() can run while the controller's USB device is\nbeing disconnected. kobject_get_path() walks ancestor kobjects and\ndereferences their names; if the USB device kobject name is no longer\nvalid, this can fault in strlen():\n\n  RIP: 0010:strlen+0x10/0x30\n  Call Trace:\n   kobject_get_path+0x34/0x150\n   snd_dualsense_ih_match+0x49/0xd0 [snd_usb_audio]\n   input_register_device+0x566/0x6a0\n   ps_probe+0xb89/0x1590 [hid_playstation]\n\nThe same ownership check can be done without building kobject path\nstrings. The input device is parented below the HID device, USB interface\nand USB device, so walking the input device parent chain and comparing\nagainst the mixer USB device preserves the check without dereferencing\nkobject names during disconnect.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/4246dd043b7a4f8e3bc1d2896e81d11220610eda","https://git.kernel.org/stable/c/4566bf8ae9dbfe81bdc2ff1702d59db8a233b06e","https://git.kernel.org/stable/c/662a1d7b5affc424ea4f4bc20dd99be29e687886","https://git.kernel.org/stable/c/7693c0cc415f3a16a7a3355f245474a5e661be4e","https://git.kernel.org/stable/c/a263eb12cbe2e208e6e637df0f9b0be9a484158e"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:46:40.600842820+00:00"},"epss":{"cve":"CVE-2026-64478","score":0.00184,"percentile":0.08055,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}