{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "8ad342a863590b24ce77681b7e081363fb3333f7"
            },
            {
              "fixed": "b92c502595336a3cc5bb7a060170891366745a5d"
            },
            {
              "fixed": "855187a88bdf762c46b6849307597e3e02bfc1d9"
            },
            {
              "fixed": "c9780b601438137494b407eb4301bb3de2587ac9"
            },
            {
              "fixed": "07eb075b60d565a5e465a1945a80cc62807492ad"
            },
            {
              "fixed": "9319dd64d5cdef851841c091f30424faa2284c31"
            },
            {
              "fixed": "6cf31716b77a71c0d634106f4f3951377b8dc6dc"
            },
            {
              "fixed": "02bd02c585293634b213b142cba63cbf77891f6b"
            },
            {
              "fixed": "e873c74132f0c5f1452816cd9bb26208f0bba1e1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.6.0"
            },
            {
              "fixed": "5.10.271"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.222"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.54"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98343.json"
  },
  "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-\u003edevice-\u003eref,\ndma_device_release() runs and may free the dma_device along with its\nchannels.\n\ndma_chan_put() then still reads chan-\u003edevice-\u003eowner 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-\u003edevice.",
  "id": "CVE-2026-98343",
  "modified": "2026-10-08T02:30:27.933000920Z",
  "published": "2026-10-06T08:46:33.196Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c9780b601438137494b407eb4301bb3de2587ac9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e873c74132f0c5f1452816cd9bb26208f0bba1e1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98343.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98343"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()"
}