{"id":"CVE-2026-68181","state":"PUBLISHED","title":"mei: bus: access mei_device under device_lock on cleanup","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmei: bus: access mei_device under device_lock on cleanup\n\nFix couple of problems in mei_cl_bus_dev_release():\n\nmei_cl_flush_queues() is running without lock.\nbus->file_list access after mei_dev_bus_put(bus) can become a\nuse-after-free if this was the last reference to bus.\n\nProtect queues cleanup and WARN traversal by device lock there\nto avoid the concurrent access problems.\nMove WARN traversal before mei_dev_bus_put(bus).\n\nThis file uses bus variable name for mei_device, adjust\ncode of mei_cl_bus_dev_release() to use bus variable too.","publishedAt":"2026-08-10T11:59:52.724Z","updatedAt":"2026-08-23T12:46:04.934Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6f2a6ef86b23a30b92ad57981de537bce67bfa45","status":"affected","lessThan":"02e3a755086db847d795f2593ebc45e8ee4f1755","versionType":"git"},{"version":"24f4ceeaeee7983c07590149556a0e33efe2ec90","status":"affected","lessThan":"441559d4c595f839b39f0ab6a4ae628427c2fd9e","versionType":"git"},{"version":"612c8d21ce6e37b73f3106aec7ffa35959d40261","status":"affected","lessThan":"c88c030a324c9018b77894a19b2564eb66862020","versionType":"git"},{"version":"35e8a426b16adbecae7a4e0e3c00fc8d0273db53","status":"affected","lessThan":"59dd34854202d9a3faaa87a85205e553fe7150e1","versionType":"git"},{"version":"35e8a426b16adbecae7a4e0e3c00fc8d0273db53","status":"affected","lessThan":"7cf79e8d682fe93777268f029668ce5e214237fd","versionType":"git"},{"version":"35e8a426b16adbecae7a4e0e3c00fc8d0273db53","status":"affected","lessThan":"f112ea910e554d58b4b39a4492b7d302f0f4204f","versionType":"git"},{"version":"2f29dce5a5ae06a7db32e4491d72269329a86eeb","status":"affected","versionType":"git"},{"version":"28de6ca5276a94b0589ae1bf026b89fa0eaf14c0","status":"affected","versionType":"git"},{"version":"6.1.149","status":"affected","lessThan":"6.1.184","versionType":"semver"},{"version":"6.6.103","status":"affected","lessThan":"6.6.148","versionType":"semver"},{"version":"6.12.43","status":"affected","lessThan":"6.12.101","versionType":"semver"},{"version":"6.15.11","status":"affected","lessThan":"6.16","versionType":"semver"},{"version":"6.16.2","status":"affected","lessThan":"6.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/misc/mei/bus.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"6.1.184","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.148","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.101","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.42","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/misc/mei/bus.c"]}],"references":["https://git.kernel.org/stable/c/02e3a755086db847d795f2593ebc45e8ee4f1755","https://git.kernel.org/stable/c/441559d4c595f839b39f0ab6a4ae628427c2fd9e","https://git.kernel.org/stable/c/c88c030a324c9018b77894a19b2564eb66862020","https://git.kernel.org/stable/c/59dd34854202d9a3faaa87a85205e553fe7150e1","https://git.kernel.org/stable/c/7cf79e8d682fe93777268f029668ce5e214237fd","https://git.kernel.org/stable/c/f112ea910e554d58b4b39a4492b7d302f0f4204f"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:49.727Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/68xxx/CVE-2026-68181.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-68181","state":"PUBLISHED","datePublished":"2026-08-10T11:59:52.724Z","dateUpdated":"2026-08-23T12:46:04.934Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-30T09:28:09.373Z"},"containers":{"cna":{"title":"mei: bus: access mei_device under device_lock on cleanup","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nmei: bus: access mei_device under device_lock on cleanup\n\nFix couple of problems in mei_cl_bus_dev_release():\n\nmei_cl_flush_queues() is running without lock.\nbus->file_list access after mei_dev_bus_put(bus) can become a\nuse-after-free if this was the last reference to bus.\n\nProtect queues cleanup and WARN traversal by device lock there\nto avoid the concurrent access problems.\nMove WARN traversal before mei_dev_bus_put(bus).\n\nThis file uses bus variable name for mei_device, adjust\ncode of mei_cl_bus_dev_release() to use bus variable too."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"6f2a6ef86b23a30b92ad57981de537bce67bfa45","status":"affected","lessThan":"02e3a755086db847d795f2593ebc45e8ee4f1755","versionType":"git"},{"version":"24f4ceeaeee7983c07590149556a0e33efe2ec90","status":"affected","lessThan":"441559d4c595f839b39f0ab6a4ae628427c2fd9e","versionType":"git"},{"version":"612c8d21ce6e37b73f3106aec7ffa35959d40261","status":"affected","lessThan":"c88c030a324c9018b77894a19b2564eb66862020","versionType":"git"},{"version":"35e8a426b16adbecae7a4e0e3c00fc8d0273db53","status":"affected","lessThan":"59dd34854202d9a3faaa87a85205e553fe7150e1","versionType":"git"},{"version":"35e8a426b16adbecae7a4e0e3c00fc8d0273db53","status":"affected","lessThan":"7cf79e8d682fe93777268f029668ce5e214237fd","versionType":"git"},{"version":"35e8a426b16adbecae7a4e0e3c00fc8d0273db53","status":"affected","lessThan":"f112ea910e554d58b4b39a4492b7d302f0f4204f","versionType":"git"},{"version":"2f29dce5a5ae06a7db32e4491d72269329a86eeb","status":"affected","versionType":"git"},{"version":"28de6ca5276a94b0589ae1bf026b89fa0eaf14c0","status":"affected","versionType":"git"},{"version":"6.1.149","status":"affected","lessThan":"6.1.184","versionType":"semver"},{"version":"6.6.103","status":"affected","lessThan":"6.6.148","versionType":"semver"},{"version":"6.12.43","status":"affected","lessThan":"6.12.101","versionType":"semver"},{"version":"6.15.11","status":"affected","lessThan":"6.16","versionType":"semver"},{"version":"6.16.2","status":"affected","lessThan":"6.17","versionType":"semver"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/misc/mei/bus.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.17","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.17","versionType":"semver"},{"version":"6.1.184","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.148","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.101","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.42","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.6","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/misc/mei/bus.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/02e3a755086db847d795f2593ebc45e8ee4f1755"},{"url":"https://git.kernel.org/stable/c/441559d4c595f839b39f0ab6a4ae628427c2fd9e"},{"url":"https://git.kernel.org/stable/c/c88c030a324c9018b77894a19b2564eb66862020"},{"url":"https://git.kernel.org/stable/c/59dd34854202d9a3faaa87a85205e553fe7150e1"},{"url":"https://git.kernel.org/stable/c/7cf79e8d682fe93777268f029668ce5e214237fd"},{"url":"https://git.kernel.org/stable/c/f112ea910e554d58b4b39a4492b7d302f0f4204f"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-23T12:46:04.934Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.1.149","versionEndExcluding":"6.1.184"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6.103","versionEndExcluding":"6.6.148"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12.43","versionEndExcluding":"6.12.101"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"6.18.42"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.1.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.17","versionEndExcluding":"7.2"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.15.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.16.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}