{"cve":"CVE-2025-38535","nvd":{"published":"2025-08-16T12:15:29.217","modified":"2026-06-17T09:17:03.767","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nphy: tegra: xusb: Fix unbalanced regulator disable in UTMI PHY mode\n\nWhen transitioning from USB_ROLE_DEVICE to USB_ROLE_NONE, the code\nassumed that the regulator should be disabled. However, if the regulator\nis marked as always-on, regulator_is_enabled() continues to return true,\nleading to an incorrect attempt to disable a regulator which is not\nenabled.\n\nThis can result in warnings such as:\n\n[  250.155624] WARNING: CPU: 1 PID: 7326 at drivers/regulator/core.c:3004\n_regulator_disable+0xe4/0x1a0\n[  250.155652] unbalanced disables for VIN_SYS_5V0\n\nTo fix this, we move the regulator control logic into\ntegra186_xusb_padctl_id_override() function since it's directly related\nto the ID override state. The regulator is now only disabled when the role\ntransitions from USB_ROLE_HOST to USB_ROLE_NONE, by checking the VBUS_ID\nregister. This ensures that regulator enable/disable operations are\nproperly balanced and only occur when actually transitioning to/from host\nmode.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":[],"references":["https://git.kernel.org/stable/c/1bb85b5c2bd43b687c3d54eb6328917f90dd38fc","https://git.kernel.org/stable/c/5367cdeb75cb6c687ca468450bceb2602ab239d8","https://git.kernel.org/stable/c/cdcb0ffd6448f6be898956913a42bd08e59fb2ae","https://git.kernel.org/stable/c/ceb645ac6ce052609ee5c8f819a80e8881789b04","https://git.kernel.org/stable/c/cefc1caee9dd06c69e2d807edc5949b329f52b22"],"products":["debian:debian_linux","linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:06:45.861874017+00:00"},"epss":{"cve":"CVE-2025-38535","score":0.00174,"percentile":0.06865,"date":"2026-11-01"},"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."]}