Vulnerability-Lookup

CVE-2026-98343 (GCVE-0-2026-98343)

Vulnerability from cvelistv5 – Published: 2026-10-06 08:46 – Updated: 2026-10-06 08:46

Title

dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()

Summary

In the Linux kernel, the following vulnerability has been resolved: dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel() When dma_device_put() drops the last reference on chan->device->ref, dma_device_release() runs and may free the dma_device along with its channels. dma_chan_put() then still reads chan->device->owner via dma_chan_to_owner() for the trailing module_put(). KASAN catches it: slab-use-after-free in dma_chan_put+0x3e6/0x4c0 Read of size 8 by task insmod/6319 Freed by task 6319: kfree+0x225/0x470 dma_chan_put+0x395/0x4c0 dmaengine_put+0xf8/0x160 Cache the module owner in dma_chan_put() before the put so the trailing module_put() does not need chan->device.

Severity

No CVSS data available.

Assigner

Linux mitre root Scorecard

References

8 references

URL	Tags
https://git.kernel.org/stable/c/b92c502595336a3cc…
https://git.kernel.org/stable/c/855187a88bdf762c4…
https://git.kernel.org/stable/c/c9780b60143813749…
https://git.kernel.org/stable/c/07eb075b60d565a5e…
https://git.kernel.org/stable/c/9319dd64d5cdef851…
https://git.kernel.org/stable/c/6cf31716b77a71c0d…
https://git.kernel.org/stable/c/02bd02c585293634b…
https://git.kernel.org/stable/c/e873c74132f0c5f14…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: 8ad342a863590b24ce77681b7e081363fb3333f7 , < b92c502595336a3cc5bb7a060170891366745a5d (git) Affected: 8ad342a863590b24ce77681b7e081363fb3333f7 , < 855187a88bdf762c46b6849307597e3e02bfc1d9 (git) Affected: 8ad342a863590b24ce77681b7e081363fb3333f7 , < c9780b601438137494b407eb4301bb3de2587ac9 (git) Affected: 8ad342a863590b24ce77681b7e081363fb3333f7 , < 07eb075b60d565a5e465a1945a80cc62807492ad (git) Affected: 8ad342a863590b24ce77681b7e081363fb3333f7 , < 9319dd64d5cdef851841c091f30424faa2284c31 (git) Affected: 8ad342a863590b24ce77681b7e081363fb3333f7 , < 6cf31716b77a71c0d634106f4f3951377b8dc6dc (git) Affected: 8ad342a863590b24ce77681b7e081363fb3333f7 , < 02bd02c585293634b213b142cba63cbf77891f6b (git) Affected: 8ad342a863590b24ce77681b7e081363fb3333f7 , < e873c74132f0c5f1452816cd9bb26208f0bba1e1 (git)	guessed
Linux	Linux	Affected: 5.6 Unaffected: 0 , < 5.6 (semver) Unaffected: 5.10.271 , ≤ 5.10.* (semver) Unaffected: 5.15.222 , ≤ 5.15.* (semver) Unaffected: 6.1.189 , ≤ 6.1.* (semver) Unaffected: 6.6.158 , ≤ 6.6.* (semver) Unaffected: 6.12.112 , ≤ 6.12.* (semver) Unaffected: 6.18.54 , ≤ 6.18.* (semver) Unaffected: 7.2.8 , ≤ 7.2.* (semver) Unaffected: 7.3-rc4 , ≤ * (original_commit_for_fix)	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/dmaengine.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b92c502595336a3cc5bb7a060170891366745a5d",
              "status": "affected",
              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            },
            {
              "lessThan": "855187a88bdf762c46b6849307597e3e02bfc1d9",
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              "versionType": "git"
            },
            {
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              "versionType": "git"
            },
            {
              "lessThan": "07eb075b60d565a5e465a1945a80cc62807492ad",
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              "versionType": "git"
            },
            {
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              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            },
            {
              "lessThan": "6cf31716b77a71c0d634106f4f3951377b8dc6dc",
              "status": "affected",
              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            },
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            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/dmaengine.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
            {
              "lessThan": "5.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.271",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.222",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.189",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.158",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.112",
                  "versionStartIncluding": "5.6",
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                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.54",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.8",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc4",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T08:46:33.196Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d"
        },
        {
          "url": "https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9"
        },
        {
          "url": "https://git.kernel.org/stable/c/c9780b601438137494b407eb4301bb3de2587ac9"
        },
        {
          "url": "https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad"
        },
        {
          "url": "https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31"
        },
        {
          "url": "https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc"
        },
        {
          "url": "https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b"
        },
        {
          "url": "https://git.kernel.org/stable/c/e873c74132f0c5f1452816cd9bb26208f0bba1e1"
        }
      ],
      "title": "dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98343",
    "datePublished": "2026-10-06T08:46:33.196Z",
    "dateReserved": "2026-09-25T10:25:14.343Z",
    "dateUpdated": "2026-10-06T08:46:33.196Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-98343",
      "date": "2026-10-06",
      "epss": "0.00184",
      "percentile": "0.07299"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/dma/dmaengine.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
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                    "versionType": "git"
                  },
                  {
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                    "versionType": "git"
                  },
                  {
                    "lessThan": "c9780b601438137494b407eb4301bb3de2587ac9",
                    "status": "affected",
                    "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "07eb075b60d565a5e465a1945a80cc62807492ad",
                    "status": "affected",
                    "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "9319dd64d5cdef851841c091f30424faa2284c31",
                    "status": "affected",
                    "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "6cf31716b77a71c0d634106f4f3951377b8dc6dc",
                    "status": "affected",
                    "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "02bd02c585293634b213b142cba63cbf77891f6b",
                    "status": "affected",
                    "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "e873c74132f0c5f1452816cd9bb26208f0bba1e1",
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                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/dma/dmaengine.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.6"
                  },
                  {
                    "lessThan": "5.6",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.271",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.222",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.189",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.158",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.112",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.54",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.2.*",
                    "status": "unaffected",
                    "version": "7.2.8",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.3-rc4",
                    "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: 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",
        "lastModified": "2026-10-06T09:18:27.163",
        "metrics": {},
        "published": "2026-10-06T09:18:27.163",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/c9780b601438137494b407eb4301bb3de2587ac9"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/e873c74132f0c5f1452816cd9bb26208f0bba1e1"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    }
  }
}

FKIE_CVE-2026-98343

Vulnerability from fkie_nvd - Published: 2026-10-06 09:18 - Updated: 2026-10-06 09:18

Severity

Summary

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/c9780b601438137494b407eb4301bb3de2587ac9
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e873c74132f0c5f1452816cd9bb26208f0bba1e1

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/dmaengine.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b92c502595336a3cc5bb7a060170891366745a5d",
              "status": "affected",
              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            },
            {
              "lessThan": "855187a88bdf762c46b6849307597e3e02bfc1d9",
              "status": "affected",
              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            },
            {
              "lessThan": "c9780b601438137494b407eb4301bb3de2587ac9",
              "status": "affected",
              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            },
            {
              "lessThan": "07eb075b60d565a5e465a1945a80cc62807492ad",
              "status": "affected",
              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            },
            {
              "lessThan": "9319dd64d5cdef851841c091f30424faa2284c31",
              "status": "affected",
              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            },
            {
              "lessThan": "6cf31716b77a71c0d634106f4f3951377b8dc6dc",
              "status": "affected",
              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            },
            {
              "lessThan": "02bd02c585293634b213b142cba63cbf77891f6b",
              "status": "affected",
              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            },
            {
              "lessThan": "e873c74132f0c5f1452816cd9bb26208f0bba1e1",
              "status": "affected",
              "version": "8ad342a863590b24ce77681b7e081363fb3333f7",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/dmaengine.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
            {
              "lessThan": "5.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc4",
              "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: 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",
  "lastModified": "2026-10-06T09:18:27.163",
  "metrics": {},
  "published": "2026-10-06T09:18:27.163",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/02bd02c585293634b213b142cba63cbf77891f6b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/07eb075b60d565a5e465a1945a80cc62807492ad"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6cf31716b77a71c0d634106f4f3951377b8dc6dc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/855187a88bdf762c46b6849307597e3e02bfc1d9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9319dd64d5cdef851841c091f30424faa2284c31"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b92c502595336a3cc5bb7a060170891366745a5d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c9780b601438137494b407eb4301bb3de2587ac9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e873c74132f0c5f1452816cd9bb26208f0bba1e1"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-RW66-9H9X-4VJF

Vulnerability from github – Published: 2026-10-06 09:31 – Updated: 2026-10-06 09:31

Details

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

dmaengine: fix use-after-free in dma_chan_put() and dma_release_channel()

When dma_device_put() drops the last reference on chan->device->ref, dma_device_release() runs and may free the dma_device along with its channels.

dma_chan_put() then still reads chan->device->owner via dma_chan_to_owner() for the trailing module_put(). KASAN catches it:

slab-use-after-free in dma_chan_put+0x3e6/0x4c0
Read of size 8 by task insmod/6319
Freed by task 6319:
  kfree+0x225/0x470
  dma_chan_put+0x395/0x4c0
  dmaengine_put+0xf8/0x160

Cache the module owner in dma_chan_put() before the put so the trailing module_put() does not need chan->device.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-98343"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-06T09:18:27Z",
    "severity": null
  },
  "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": "GHSA-rw66-9h9x-4vjf",
  "modified": "2026-10-06T09:31:36Z",
  "published": "2026-10-06T09:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98343"
    },
    {
      "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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Action not permitted

CVE-2026-98343 (GCVE-0-2026-98343)

FKIE_CVE-2026-98343

GHSA-RW66-9H9X-4VJF

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