{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf"
            },
            {
              "fixed": "b86280b12ccf33b68b309b7cb0e4476894dfe77c"
            },
            {
              "fixed": "07e50cef557def076418c67051a336e4c6bd50e1"
            },
            {
              "fixed": "17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba"
            },
            {
              "fixed": "d232bc6cf4562132ef50644484dfd4b23a593295"
            },
            {
              "fixed": "fac202d73e7a649b7d4010325c6c6dcd9334fe65"
            },
            {
              "fixed": "d91fb6c0d10dad32929dc5c6850f89df34e1bfcd"
            },
            {
              "fixed": "647217abea849d3d45f8cb0b8ee5b78d50f26985"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.3.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89993.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dw-edma: Initialize IRQ data before requesting IRQs\n\ndw_edma_irq_request() passes struct dw_edma_irq to request_irq() before\ndw_edma_channel_setup() fills the back pointer. A shared interrupt can\ntherefore enter the handler with dw_irq-\u003edw still NULL, leading to a\nNULL pointer dereference.\n\nSet the back pointer before installing each handler.",
  "id": "CVE-2026-89993",
  "modified": "2026-09-18T03:30:41.356468024Z",
  "published": "2026-09-16T10:33:06.611Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07e50cef557def076418c67051a336e4c6bd50e1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/17ef63843c0fcbf1efdfbbfb0f5584a5ea2c91ba"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/647217abea849d3d45f8cb0b8ee5b78d50f26985"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b86280b12ccf33b68b309b7cb0e4476894dfe77c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d232bc6cf4562132ef50644484dfd4b23a593295"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d91fb6c0d10dad32929dc5c6850f89df34e1bfcd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fac202d73e7a649b7d4010325c6c6dcd9334fe65"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89993.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89993"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "dmaengine: dw-edma: Initialize IRQ data before requesting IRQs"
}