{"id":"CVE-2025-21838","title":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: core: flush gadget workqueue after device removal\n\ndevice_del() can lead to new work being scheduled in gadget->work\nworkqueue","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: core: flush gadget workqueue after device removal\n\ndevice_del() can lead to new work being scheduled in gadget->work\nworkqueue. This is observed, for examp…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","vendor":"linux","product":"linux_kernel","affected":["linux_kernel >= 3.12, < 6.1.130","linux_kernel >= 6.2, < 6.6.80","linux_kernel >= 6.7, < 6.12.16","linux_kernel >= 6.13, < 6.13.4","linux_kernel = 6.14"],"patched":["linux_kernel 6.13.4"],"published":"2025-03-07","updated":"2026-10-15","sourceUpdated":"2026-10-15T02:17:37.803","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-21838","references":[{"url":"https://git.kernel.org/stable/c/399a45e5237ca14037120b1b895bd38a3b4492ea","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/859cb45aefa6de823b2fa7f229fe6d9562c9f3b7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/97695b5a1b5467a4f91194db12160f56da445dfe","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/e3bc1a9a67ce33a2e761e6e7b7c2afc6cb9b7266","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/f894448f3904d7ad66fecef8f01fe0172629e091","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-784472.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd","cve.org"],"epss":0.00208,"epssPercentile":0.1083,"ingestedAt":"2026-10-15T03:30:12.805Z","slug":"CVE-2025-21838","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: core: flush gadget workqueue after device removal\n\ndevice_del() can lead to new work being scheduled in gadget->work\nworkqueue. This is observed, for example, with the dwc3 driver with the\nfollowing call stack:\n  device_del()\n    gadget_unbind_driver()\n      usb_gadget_disconnect_locked()\n        dwc3_gadget_pullup()\n\t  dwc3_gadget_soft_disconnect()\n\t    usb_gadget_set_state()\n\t      schedule_work(&gadget->work)\n\nMove flush_work() after device_del() to ensure the workqueue is cleaned\nup.\n\n## Affected\n\n- `linux_kernel >= 3.12, < 6.1.130`\n- `linux_kernel >= 6.2, < 6.6.80`\n- `linux_kernel >= 6.7, < 6.12.16`\n- `linux_kernel >= 6.13, < 6.13.4`\n- `linux_kernel = 6.14`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `linux_kernel 6.13.4`","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}