{"id":"CVE-2026-93200","title":"In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: master: Fix use-after-free of master->this\n\nsysfs attribute callbacks for the master controller device dereference\nmaster->this","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\ni3c: master: Fix use-after-free of master->this\n\nsysfs attribute callbacks for the master controller device dereference\nmaster->this.  However, master->this is freed in…","severity":"none","vendor":"Linux","product":"Linux","affected":["Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 4f3145db05fede36b35f8249b8acde5bd5d54864","Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < 50034d8d0f797c3a7a599f750a7d3e792e80dea5","Linux >= 3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0 < feb0ed76601f3c2f91f08688c5a7d8b9d382f720","Linux 5.0"],"published":"2026-09-17","updated":"2026-09-17","sourceUpdated":"2026-09-17T17:18:16.297","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93200","references":[{"url":"https://git.kernel.org/stable/c/4f3145db05fede36b35f8249b8acde5bd5d54864","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/50034d8d0f797c3a7a599f750a7d3e792e80dea5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/feb0ed76601f3c2f91f08688c5a7d8b9d382f720","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-17T16:21:47.721Z","epss":0.00154,"epssPercentile":0.04984,"slug":"CVE-2026-93200","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\ni3c: master: Fix use-after-free of master->this\n\nsysfs attribute callbacks for the master controller device dereference\nmaster->this.  However, master->this is freed in\ni3c_master_detach_free_devs() before the master device itself is\nreleased.\n\nAs a result, sysfs accesses can dereference a freed master->this\npointer, leading to a use-after-free.\n\nKeep master->this alive until i3c_masterdev_release(), which is called\nafter the master device and its sysfs state are being torn down. Do not\nfree master->this as part of the normal device detach path.\n\nOn the error path in i3c_master_set_info(), reset master->this and\nbus.cur_master to NULL before freeing the allocated device.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}