{"cve":"CVE-2026-98343","nvd":{"published":"2026-10-06T09:18:27.163","modified":"2026-10-19T10:18:36.690","status":"Received","description":"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.","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b","https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad","https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc","https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9","https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:57:46.668721662+00:00"},"epss":{"cve":"CVE-2026-98343","score":0.00177,"percentile":0.07146,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}