{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-98343","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.343Z","datePublished":"2026-10-06T08:46:33.196Z","dateUpdated":"2026-10-06T08:46:33.196Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-06T08:46:33.196Z"},"descriptions":[{"lang":"en","value":"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."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/dmaengine.c"],"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"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/dma/dmaengine.c"],"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-rc4","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":"5.6","versionEndExcluding":"5.10.271"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"5.15.222"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.1.189"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.6.158"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.12.112"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"6.18.54"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.2.8"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"5.6","versionEndExcluding":"7.3-rc4"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d"},{"url":"https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9"},{"url":"https://git.kernel.org/stable/c/c9780b601438137494b407eb4301bb3de2587ac9"},{"url":"https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad"},{"url":"https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31"},{"url":"https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc"},{"url":"https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b"},{"url":"https://git.kernel.org/stable/c/e873c74132f0c5f1452816cd9bb26208f0bba1e1"}],"title":"dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()","x_generator":{"engine":"bippy-1.2.0"}}}}