Vulnerability-Lookup

CVE-2026-93042 (GCVE-0-2026-93042)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:10 – Updated: 2026-09-17 16:10

Title

dmaengine: dw-edma: Terminate all descriptors without callbacks

Summary

In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-edma: Terminate all descriptors without callbacks The DMA Engine client documentation says in the "Terminate APIs" section of Documentation/driver-api/dmaengine/client.rst: "No callback functions will be called for any incomplete transfers." dw-edma instead calls vchan_cookie_complete() when a deferred STOP reaches the interrupt handler. This schedules a callback for the active descriptor and leaves other issued or submitted descriptors queued. A late callback after dmaengine_terminate_sync() can dereference client state that has already been freed, while leftover descriptors may later restart into reused buffers or leak. Move all issued and submitted descriptors to the terminated list whenever termination completes. For a pending STOP, do this from both the DONE and ABORT paths. Complete their cookies in order without scheduling callbacks. A STOP can remain pending until the running transfer raises an interrupt. Make device_synchronize() wait for such a pending STOP to complete before releasing terminated descriptors. Reuse it from free_chan_resources(), then release the remaining virt-dma resources. Sleep instead of busy-polling while waiting, and warn if the existing timeout expires.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/65e387b95d3855aa8…
https://git.kernel.org/stable/c/4793f9099a1cadf4e…
https://git.kernel.org/stable/c/be87d86537de7ea6f…
https://git.kernel.org/stable/c/f3ec6702a1d216be6…
https://git.kernel.org/stable/c/99109a51efd28c9a6…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < 65e387b95d3855aa894ac729e1778e5bcb9083cb (git) Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < 4793f9099a1cadf4e37f3a03d524af6bce88a0ea (git) Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < be87d86537de7ea6fd025f41033d2faff880973f (git) Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7 (git) Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < 99109a51efd28c9a661fbfb9469b023c517b31d1 (git)	guessed
Linux	Linux	Affected: 5.3 Unaffected: 0 , < 5.3 (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
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          "programFiles": [
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.3"
            },
            {
              "lessThan": "5.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "version": "6.6.157",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
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              "versionType": "semver"
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              "version": "7.2.6",
              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.3-rc1",
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          ]
        }
      ],
      "cpeApplicability": [
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          "value": "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."
        }
      ],
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        },
        {
          "url": "https://git.kernel.org/stable/c/99109a51efd28c9a661fbfb9469b023c517b31d1"
        }
      ],
      "title": "dmaengine: dw-edma: Terminate all descriptors without callbacks",
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  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93042",
    "datePublished": "2026-09-17T16:10:34.911Z",
    "dateReserved": "2026-09-17T15:57:05.657Z",
    "dateUpdated": "2026-09-17T16:10:34.911Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
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                "product": "Linux",
                "programFiles": [
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                "vendor": "Linux",
                "versions": [
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              }
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          }
        ],
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        "descriptions": [
          {
            "lang": "en",
            "value": "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",
        "lastModified": "2026-09-17T17:17:57.420",
        "metrics": {},
        "published": "2026-09-17T17:17:57.420",
        "references": [
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            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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}

FKIE_CVE-2026-93042

Vulnerability from fkie_nvd - Published: 2026-09-17 17:17 - Updated: 2026-09-17 17:17

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/4793f9099a1cadf4e37f3a03d524af6bce88a0ea
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/65e387b95d3855aa894ac729e1778e5bcb9083cb
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/99109a51efd28c9a661fbfb9469b023c517b31d1
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/be87d86537de7ea6fd025f41033d2faff880973f
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/dw-edma/dw-edma-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "65e387b95d3855aa894ac729e1778e5bcb9083cb",
              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            },
            {
              "lessThan": "4793f9099a1cadf4e37f3a03d524af6bce88a0ea",
              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            },
            {
              "lessThan": "be87d86537de7ea6fd025f41033d2faff880973f",
              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
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            {
              "lessThan": "f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7",
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              "versionType": "git"
            },
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              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/dw-edma/dw-edma-core.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.3"
            },
            {
              "lessThan": "5.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
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              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
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              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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",
  "lastModified": "2026-09-17T17:17:57.420",
  "metrics": {},
  "published": "2026-09-17T17:17:57.420",
  "references": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4793f9099a1cadf4e37f3a03d524af6bce88a0ea"
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    },
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-M4JG-4GFW-GM5R

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

In the Linux kernel, the following vulnerability has been resolved:

dmaengine: dw-edma: Terminate all descriptors without callbacks

The DMA Engine client documentation says in the "Terminate APIs" section of Documentation/driver-api/dmaengine/client.rst:

"No callback functions will be called for any incomplete transfers."

dw-edma instead calls vchan_cookie_complete() when a deferred STOP reaches the interrupt handler. This schedules a callback for the active descriptor and leaves other issued or submitted descriptors queued. A late callback after dmaengine_terminate_sync() can dereference client state that has already been freed, while leftover descriptors may later restart into reused buffers or leak.

Move all issued and submitted descriptors to the terminated list whenever termination completes. For a pending STOP, do this from both the DONE and ABORT paths. Complete their cookies in order without scheduling callbacks.

A STOP can remain pending until the running transfer raises an interrupt. Make device_synchronize() wait for such a pending STOP to complete before releasing terminated descriptors. Reuse it from free_chan_resources(), then release the remaining virt-dma resources. Sleep instead of busy-polling while waiting, and warn if the existing timeout expires.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-93042"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:57Z",
    "severity": null
  },
  "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": "GHSA-m4jg-4gfw-gm5r",
  "modified": "2026-09-17T18:32:07Z",
  "published": "2026-09-17T18:32:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93042"
    },
    {
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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Action not permitted

CVE-2026-93042 (GCVE-0-2026-93042)

FKIE_CVE-2026-93042

GHSA-M4JG-4GFW-GM5R

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