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dmaengine: dw-edma: Terminate all descriptors without callbacks

Type: advisorySource: Official CVE List1 source record

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.

Announced Source revision 1
Original source ↗

CVE-2026-93042

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-93042

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
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Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
        "lessThan": "65e387b95d3855aa894ac729e1778e5bcb9083cb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
        "lessThan": "4793f9099a1cadf4e37f3a03d524af6bce88a0ea",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
        "lessThan": "be87d86537de7ea6fd025f41033d2faff880973f",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
        "lessThan": "f3ec6702a1d216be61f692cc0a983d6c8fb5ebf7",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
        "lessThan": "99109a51efd28c9a661fbfb9469b023c517b31d1",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/dma/dw-edma/dw-edma-core.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.3"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.3",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "6.6.157",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.110",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.52",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.2.6",
        "versionType": "semver",
        "lessThanOrEqual": "7.2.*"
      },
      {
        "status": "unaffected",
        "version": "7.3",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/dma/dw-edma/dw-edma-core.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-93042

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#37779 · Revision 1
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Publisher date
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