{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93200","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-17T16:02:15.092Z","datePublished":"2026-09-17T16:12:21.751Z","dateUpdated":"2026-10-03T10:57:05.718Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-03T10:57:05.718Z"},"descriptions":[{"lang":"en","value":"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\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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i3c/master.c"],"versions":[{"version":"3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0","lessThan":"23a1c4288a60e253a05a882bd8928ed61beb4a48","status":"affected","versionType":"git"},{"version":"3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0","lessThan":"4f3145db05fede36b35f8249b8acde5bd5d54864","status":"affected","versionType":"git"},{"version":"3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0","lessThan":"50034d8d0f797c3a7a599f750a7d3e792e80dea5","status":"affected","versionType":"git"},{"version":"3a379bbcea0af6280e1ca0d1edfcf4e68cde6ee0","lessThan":"feb0ed76601f3c2f91f08688c5a7d8b9d382f720","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/i3c/master.c"],"versions":[{"version":"5.0","status":"affected"},{"version":"0","lessThan":"5.0","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.52","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.6","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.0","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/23a1c4288a60e253a05a882bd8928ed61beb4a48"},{"url":"https://git.kernel.org/stable/c/4f3145db05fede36b35f8249b8acde5bd5d54864"},{"url":"https://git.kernel.org/stable/c/50034d8d0f797c3a7a599f750a7d3e792e80dea5"},{"url":"https://git.kernel.org/stable/c/feb0ed76601f3c2f91f08688c5a7d8b9d382f720"}],"title":"i3c: master: Fix use-after-free of master->this","x_generator":{"engine":"bippy-1.2.0"}}}}