{"id":"CVE-2025-38535","summary":"phy: tegra: xusb: Fix unbalanced regulator disable in UTMI PHY mode","details":"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.","modified":"2026-04-02T12:48:01.136154Z","published":"2025-08-16T11:12:27.873Z","related":["SUSE-SU-2025:03272-1","SUSE-SU-2025:03290-1","SUSE-SU-2025:03301-1","SUSE-SU-2025:03382-1","SUSE-SU-2025:03602-1","SUSE-SU-2025:03633-1","SUSE-SU-2025:03634-1","SUSE-SU-2025:20653-1","SUSE-SU-2025:20669-1","SUSE-SU-2025:20739-1","SUSE-SU-2025:20756-1","SUSE-SU-2026:20555-1","SUSE-SU-2026:20599-1","SUSE-SU-2026:20615-1","openSUSE-SU-2026:20287-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38535.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1bb85b5c2bd43b687c3d54eb6328917f90dd38fc"},{"type":"WEB","url":"https://git.kernel.org/stable/c/5367cdeb75cb6c687ca468450bceb2602ab239d8"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cdcb0ffd6448f6be898956913a42bd08e59fb2ae"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ceb645ac6ce052609ee5c8f819a80e8881789b04"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cefc1caee9dd06c69e2d807edc5949b329f52b22"},{"type":"WEB","url":"https://git.kernel.org/stable/c/eaa420339658615d26c1cc95cd6cf720b9aebfca"},{"type":"WEB","url":"https://git.kernel.org/stable/c/ec7f98ff05f0649af0adeb4808c7ba23d6111ef9"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/38xxx/CVE-2025-38535.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-38535"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"49d46e3c7e597e8b00c6fc16e6fd7a92044f4371"},{"fixed":"ceb645ac6ce052609ee5c8f819a80e8881789b04"},{"fixed":"cdcb0ffd6448f6be898956913a42bd08e59fb2ae"},{"fixed":"1bb85b5c2bd43b687c3d54eb6328917f90dd38fc"},{"fixed":"5367cdeb75cb6c687ca468450bceb2602ab239d8"},{"fixed":"ec7f98ff05f0649af0adeb4808c7ba23d6111ef9"},{"fixed":"eaa420339658615d26c1cc95cd6cf720b9aebfca"},{"fixed":"cefc1caee9dd06c69e2d807edc5949b329f52b22"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-38535.json"}}],"schema_version":"1.7.5"}