{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf"
            },
            {
              "fixed": "65e387b95d3855aa894ac729e1778e5bcb9083cb"
            },
            {
              "fixed": "4793f9099a1cadf4e37f3a03d524af6bce88a0ea"
            },
            {
              "fixed": "be87d86537de7ea6fd025f41033d2faff880973f"
            },
            {
              "fixed": "f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7"
            },
            {
              "fixed": "99109a51efd28c9a661fbfb9469b023c517b31d1"
            }
          ],
          "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": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93042.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dw-edma: Terminate all descriptors without callbacks\n\nThe DMA Engine client documentation says in the \"Terminate APIs\" section\nof Documentation/driver-api/dmaengine/client.rst:\n\n\"No callback functions will be called for any incomplete transfers.\"\n\ndw-edma instead calls vchan_cookie_complete() when a deferred STOP reaches\nthe interrupt handler. This schedules a callback for the active descriptor\nand leaves other issued or submitted descriptors queued. A late callback\nafter dmaengine_terminate_sync() can dereference client state that has\nalready been freed, while leftover descriptors may later restart into\nreused buffers or leak.\n\nMove all issued and submitted descriptors to the terminated list whenever\ntermination completes. For a pending STOP, do this from both the DONE and\nABORT paths. Complete their cookies in order without scheduling callbacks.\n\nA STOP can remain pending until the running transfer raises an\ninterrupt. Make device_synchronize() wait for such a pending STOP to\ncomplete before releasing terminated descriptors. Reuse it from\nfree_chan_resources(), then release the remaining virt-dma resources.\nSleep instead of busy-polling while waiting, and warn if the existing\ntimeout expires.",
  "id": "CVE-2026-93042",
  "modified": "2026-09-20T11:30:57.225385676Z",
  "published": "2026-09-17T16:10:34.911Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4793f9099a1cadf4e37f3a03d524af6bce88a0ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/65e387b95d3855aa894ac729e1778e5bcb9083cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/99109a51efd28c9a661fbfb9469b023c517b31d1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be87d86537de7ea6fd025f41033d2faff880973f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93042.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93042"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "dmaengine: dw-edma: Terminate all descriptors without callbacks"
}