{"id":"CVE-2025-68781","summary":"usb: phy: fsl-usb: Fix use-after-free in delayed work during device removal","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: phy: fsl-usb: Fix use-after-free in delayed work during device removal\n\nThe delayed work item otg_event is initialized in fsl_otg_conf() and\nscheduled under two conditions:\n1. When a host controller binds to the OTG controller.\n2. When the USB ID pin state changes (cable insertion/removal).\n\nA race condition occurs when the device is removed via fsl_otg_remove():\nthe fsl_otg instance may be freed while the delayed work is still pending\nor executing. This leads to use-after-free when the work function\nfsl_otg_event() accesses the already freed memory.\n\nThe problematic scenario:\n\n(detach thread)            | (delayed work)\nfsl_otg_remove()           |\n  kfree(fsl_otg_dev) //FREE| fsl_otg_event()\n                           |   og = container_of(...) //USE\n                           |   og-\u003e //USE\n\nFix this by calling disable_delayed_work_sync() in fsl_otg_remove()\nbefore deallocating the fsl_otg structure. This ensures the delayed work\nis properly canceled and completes execution prior to memory deallocation.\n\nThis bug was identified through static analysis.","modified":"2026-04-16T04:40:40.729517330Z","published":"2026-01-13T15:28:56.261Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68781.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/2e7c47e2eb3cfeadf78a1ccbac8492c60d508f23"},{"type":"WEB","url":"https://git.kernel.org/stable/c/319f7a85b3c4e34ac2fe083eb146fe129a556317"},{"type":"WEB","url":"https://git.kernel.org/stable/c/41ca62e3e21e48c2903b3b45e232cf4f2ff7434f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4476c73bbbb09b13a962176fca934b32d3954a2e"},{"type":"WEB","url":"https://git.kernel.org/stable/c/69f9a0701abc3d1f8225074c56c27e6c16a37222"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/68xxx/CVE-2025-68781.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-68781"},{"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":"0807c500a1a6d7fa20cbd7bbe7fea14a66112463"},{"fixed":"4476c73bbbb09b13a962176fca934b32d3954a2e"},{"fixed":"319f7a85b3c4e34ac2fe083eb146fe129a556317"},{"fixed":"69f9a0701abc3d1f8225074c56c27e6c16a37222"},{"fixed":"2e7c47e2eb3cfeadf78a1ccbac8492c60d508f23"},{"fixed":"41ca62e3e21e48c2903b3b45e232cf4f2ff7434f"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68781.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"6.1.160"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.120"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.64"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.3"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-68781.json"}}],"schema_version":"1.7.5"}