{"schema":"threatline.record/2","record":{"id":"CVE-2026-98343","aliases":[],"summary":"dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()","details":"In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()\n\nWhen dma_device_put() drops the last reference on chan->device->ref,\ndma_device_release() runs and may free the dma_device along with its\nchannels.\n\ndma_chan_put() then still reads chan->device->owner via\ndma_chan_to_owner() for the trailing module_put(). KASAN catches it:\n\n\tslab-use-after-free in dma_chan_put+0x3e6/0x4c0\n\tRead of size 8 by task insmod/6319\n\tFreed by task 6319:\n\t  kfree+0x225/0x470\n\t  dma_chan_put+0x395/0x4c0\n\t  dmaengine_put+0xf8/0x160\n\nCache the module owner in dma_chan_put() before the put so the trailing\nmodule_put() does not need chan->device.","categories":["Operating systems"],"product":"Linux","vendor":"Linux","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98343","source_modified_at":"2026-10-19T09:17:54.287Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"8ad342a863590b24ce77681b7e081363fb3333f7","lessThan":"b92c502595336a3cc5bb7a060170891366745a5d","status":"affected","versionType":"git"},{"version":"8ad342a863590b24ce77681b7e081363fb3333f7","lessThan":"855187a88bdf762c46b6849307597e3e02bfc1d9","status":"affected","versionType":"git"},{"version":"8ad342a863590b24ce77681b7e081363fb3333f7","lessThan":"c9780b601438137494b407eb4301bb3de2587ac9","status":"affected","versionType":"git"},{"version":"8ad342a863590b24ce77681b7e081363fb3333f7","lessThan":"07eb075b60d565a5e465a1945a80cc62807492ad","status":"affected","versionType":"git"},{"version":"8ad342a863590b24ce77681b7e081363fb3333f7","lessThan":"9319dd64d5cdef851841c091f30424faa2284c31","status":"affected","versionType":"git"},{"version":"8ad342a863590b24ce77681b7e081363fb3333f7","lessThan":"6cf31716b77a71c0d634106f4f3951377b8dc6dc","status":"affected","versionType":"git"},{"version":"8ad342a863590b24ce77681b7e081363fb3333f7","lessThan":"02bd02c585293634b213b142cba63cbf77891f6b","status":"affected","versionType":"git"},{"version":"8ad342a863590b24ce77681b7e081363fb3333f7","lessThan":"e873c74132f0c5f1452816cd9bb26208f0bba1e1","status":"affected","versionType":"git"}],"defaultStatus":"unaffected"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98343","source_modified_at":"2026-10-19T09:17:54.287Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"Linux","vendor":"Linux","versions":[{"version":"5.6","status":"affected"},{"version":"0","lessThan":"5.6","status":"unaffected","versionType":"semver"},{"version":"5.10.271","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.222","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.189","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.158","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.112","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.54","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.8","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}],"defaultStatus":"affected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98343","source_modified_at":"2026-10-19T09:17:54.287Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"855187a88bdf762c46b6849307597e3e02bfc1d9","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98343","source_modified_at":"2026-10-19T09:17:54.287Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"07eb075b60d565a5e465a1945a80cc62807492ad","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98343","source_modified_at":"2026-10-19T09:17:54.287Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"9319dd64d5cdef851841c091f30424faa2284c31","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98343","source_modified_at":"2026-10-19T09:17:54.287Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"6cf31716b77a71c0d634106f4f3951377b8dc6dc","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-98343","source_modified_at":"2026-10-19T09:17:54.287Z","fetched_at":"2026-10-23T18:45:31.882637Z","package":{"name":"Linux","ecosystem":null},"version":"02bd02c585293634b213b142cba63cbf77891f6b","basis":"first unaffected version stated in the CVE record"}],"cvss":null,"severity":null,"kev":{"listed":false},"epss":{"probability":0.00184,"percentile":0.07617,"score_date":"2026-10-23"},"published_at":"2026-10-06T08:46:33.196Z","modified_at":"2026-10-19T09:17:54.287Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-98343","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T09:17:54.287Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-98343","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/c9780b601438137494b407eb4301bb3de2587ac9"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b"},{"source":"CVE List","url":"https://git.kernel.org/stable/c/e873c74132f0c5f1452816cd9bb26208f0bba1e1"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-19T09:17:54.287Z","content_hash":"75dcc2d4076d74fcc6fae7540632dc2cd4d908517f26484d70a2fcc89b3ac783"}}