Vulnerability-Lookup

CVE-2026-93040 (GCVE-0-2026-93040)

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

Title

dmaengine: dw-edma: Serialize channel state checks

Summary

In the Linux kernel, the following vulnerability has been resolved: dmaengine: dw-edma: Serialize channel state checks pause() and resume() read and update channel state without holding vc.lock, while the interrupt handlers update the same state under it. Take the same lock around those state checks so that request, status, and configured stay consistent. For example, pause() can observe EDMA_ST_BUSY right before the interrupt handler completes the final descriptor and moves the channel to EDMA_ST_IDLE, and then record EDMA_REQ_PAUSE on an already idle channel. No further interrupt will acknowledge the request, and since issue_pending() requires EDMA_REQ_NONE, the channel is wedged for good: terminate_all() leaves the stale request behind, so even reconfiguring the channel does not recover it. issue_pending() already runs under vc.lock, but it tests configured before taking it. Move that test under the lock as well, so configured, request, and status are evaluated as one channel-state snapshot.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

8 references

URL	Tags
https://git.kernel.org/stable/c/be0072af8ce6e9458…
https://git.kernel.org/stable/c/2d76b91deeab973dd…
https://git.kernel.org/stable/c/3001cfcee30dcc81f…
https://git.kernel.org/stable/c/b6293a8a38f4d5866…
https://git.kernel.org/stable/c/da16a02f0998a0d45…
https://git.kernel.org/stable/c/fe0ffa0190e862ed7…
https://git.kernel.org/stable/c/6fc436e1500c5e4f0…
https://git.kernel.org/stable/c/f7d1619f3e10c619b…

Impacted products

2 products

Vendor	Product	Version	CPE status
Linux	Linux	Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < be0072af8ce6e9458cc586e0e8b41a251e7d4316 (git) Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < 2d76b91deeab973dd8a8c2ee587ce27f881de768 (git) Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < 3001cfcee30dcc81f8b3774319c12067f126e49a (git) Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < b6293a8a38f4d5866ce1a264c138265a02e4c53a (git) Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < da16a02f0998a0d455ce6265b836b29ad92e6e58 (git) Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < fe0ffa0190e862ed71e8c1a476090f648c9cb7d9 (git) Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < 6fc436e1500c5e4f0dde2a3dbadf6d898057be8f (git) Affected: e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf , < f7d1619f3e10c619b62c6cd6d95371b5c526c85a (git)	guessed
Linux	Linux	Affected: 5.3 Unaffected: 0 , < 5.3 (semver) Unaffected: 5.10.270 , ≤ 5.10.* (semver) Unaffected: 5.15.221 , ≤ 5.15.* (semver) Unaffected: 6.1.188 , ≤ 6.1.* (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

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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": [
            {
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              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            },
            {
              "lessThan": "3001cfcee30dcc81f8b3774319c12067f126e49a",
              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            },
            {
              "lessThan": "da16a02f0998a0d455ce6265b836b29ad92e6e58",
              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            },
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              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
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              "status": "affected",
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              "versionType": "git"
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        },
        {
          "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": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "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.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.270",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.221",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.188",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.157",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.52",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "5.3",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: dw-edma: Serialize channel state checks\n\npause() and resume() read and update channel state without holding vc.lock,\nwhile the interrupt handlers update the same state under it. Take the same\nlock around those state checks so that request, status, and configured stay\nconsistent.\n\nFor example, pause() can observe EDMA_ST_BUSY right before the interrupt\nhandler completes the final descriptor and moves the channel to\nEDMA_ST_IDLE, and then record EDMA_REQ_PAUSE on an already idle channel. No\nfurther interrupt will acknowledge the request, and since issue_pending()\nrequires EDMA_REQ_NONE, the channel is wedged for good: terminate_all()\nleaves the stale request behind, so even reconfiguring the channel does not\nrecover it.\n\nissue_pending() already runs under vc.lock, but it tests configured before\ntaking it. Move that test under the lock as well, so configured, request,\nand status are evaluated as one channel-state snapshot."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:10:33.499Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/be0072af8ce6e9458cc586e0e8b41a251e7d4316"
        },
        {
          "url": "https://git.kernel.org/stable/c/2d76b91deeab973dd8a8c2ee587ce27f881de768"
        },
        {
          "url": "https://git.kernel.org/stable/c/3001cfcee30dcc81f8b3774319c12067f126e49a"
        },
        {
          "url": "https://git.kernel.org/stable/c/b6293a8a38f4d5866ce1a264c138265a02e4c53a"
        },
        {
          "url": "https://git.kernel.org/stable/c/da16a02f0998a0d455ce6265b836b29ad92e6e58"
        },
        {
          "url": "https://git.kernel.org/stable/c/fe0ffa0190e862ed71e8c1a476090f648c9cb7d9"
        },
        {
          "url": "https://git.kernel.org/stable/c/6fc436e1500c5e4f0dde2a3dbadf6d898057be8f"
        },
        {
          "url": "https://git.kernel.org/stable/c/f7d1619f3e10c619b62c6cd6d95371b5c526c85a"
        }
      ],
      "title": "dmaengine: dw-edma: Serialize channel state checks",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93040",
    "datePublished": "2026-09-17T16:10:33.499Z",
    "dateReserved": "2026-09-17T15:57:05.657Z",
    "dateUpdated": "2026-09-17T16:10:33.499Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "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": "be0072af8ce6e9458cc586e0e8b41a251e7d4316",
                    "status": "affected",
                    "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "2d76b91deeab973dd8a8c2ee587ce27f881de768",
                    "status": "affected",
                    "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "3001cfcee30dcc81f8b3774319c12067f126e49a",
                    "status": "affected",
                    "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "b6293a8a38f4d5866ce1a264c138265a02e4c53a",
                    "status": "affected",
                    "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "da16a02f0998a0d455ce6265b836b29ad92e6e58",
                    "status": "affected",
                    "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "fe0ffa0190e862ed71e8c1a476090f648c9cb7d9",
                    "status": "affected",
                    "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "6fc436e1500c5e4f0dde2a3dbadf6d898057be8f",
                    "status": "affected",
                    "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "f7d1619f3e10c619b62c6cd6d95371b5c526c85a",
                    "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": "5.10.*",
                    "status": "unaffected",
                    "version": "5.10.270",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "5.15.*",
                    "status": "unaffected",
                    "version": "5.15.221",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.1.*",
                    "status": "unaffected",
                    "version": "6.1.188",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "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.*",
                    "status": "unaffected",
                    "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: Serialize channel state checks\n\npause() and resume() read and update channel state without holding vc.lock,\nwhile the interrupt handlers update the same state under it. Take the same\nlock around those state checks so that request, status, and configured stay\nconsistent.\n\nFor example, pause() can observe EDMA_ST_BUSY right before the interrupt\nhandler completes the final descriptor and moves the channel to\nEDMA_ST_IDLE, and then record EDMA_REQ_PAUSE on an already idle channel. No\nfurther interrupt will acknowledge the request, and since issue_pending()\nrequires EDMA_REQ_NONE, the channel is wedged for good: terminate_all()\nleaves the stale request behind, so even reconfiguring the channel does not\nrecover it.\n\nissue_pending() already runs under vc.lock, but it tests configured before\ntaking it. Move that test under the lock as well, so configured, request,\nand status are evaluated as one channel-state snapshot."
          }
        ],
        "id": "CVE-2026-93040",
        "lastModified": "2026-09-17T17:17:57.117",
        "metrics": {},
        "published": "2026-09-17T17:17:57.117",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/2d76b91deeab973dd8a8c2ee587ce27f881de768"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/3001cfcee30dcc81f8b3774319c12067f126e49a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/6fc436e1500c5e4f0dde2a3dbadf6d898057be8f"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/b6293a8a38f4d5866ce1a264c138265a02e4c53a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/be0072af8ce6e9458cc586e0e8b41a251e7d4316"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/da16a02f0998a0d455ce6265b836b29ad92e6e58"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/f7d1619f3e10c619b62c6cd6d95371b5c526c85a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "url": "https://git.kernel.org/stable/c/fe0ffa0190e862ed71e8c1a476090f648c9cb7d9"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Received"
      }
    },
    "suse_vex": {
      "aggregate_severity": "not set",
      "current_release_date": "2026-09-18T00:13:05Z",
      "cve": "CVE-2026-93040",
      "id": "CVE-2026-93040",
      "initial_release_date": "2026-09-18T00:13:05Z",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-93040",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-93040.json",
      "version": "2"
    }
  }
}

FKIE_CVE-2026-93040

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/2d76b91deeab973dd8a8c2ee587ce27f881de768
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/3001cfcee30dcc81f8b3774319c12067f126e49a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6fc436e1500c5e4f0dde2a3dbadf6d898057be8f
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b6293a8a38f4d5866ce1a264c138265a02e4c53a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/be0072af8ce6e9458cc586e0e8b41a251e7d4316
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/da16a02f0998a0d455ce6265b836b29ad92e6e58
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/f7d1619f3e10c619b62c6cd6d95371b5c526c85a
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/fe0ffa0190e862ed71e8c1a476090f648c9cb7d9

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": "be0072af8ce6e9458cc586e0e8b41a251e7d4316",
              "status": "affected",
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            {
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              "versionType": "git"
            },
            {
              "lessThan": "3001cfcee30dcc81f8b3774319c12067f126e49a",
              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            },
            {
              "lessThan": "b6293a8a38f4d5866ce1a264c138265a02e4c53a",
              "status": "affected",
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            },
            {
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              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "fe0ffa0190e862ed71e8c1a476090f648c9cb7d9",
              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            },
            {
              "lessThan": "6fc436e1500c5e4f0dde2a3dbadf6d898057be8f",
              "status": "affected",
              "version": "e63d79d1ffcd2201a2dbff1d7a1184b8f3ec74cf",
              "versionType": "git"
            },
            {
              "lessThan": "f7d1619f3e10c619b62c6cd6d95371b5c526c85a",
              "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": "5.10.*",
              "status": "unaffected",
              "version": "5.10.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.221",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.188",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "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.*",
              "status": "unaffected",
              "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: Serialize channel state checks\n\npause() and resume() read and update channel state without holding vc.lock,\nwhile the interrupt handlers update the same state under it. Take the same\nlock around those state checks so that request, status, and configured stay\nconsistent.\n\nFor example, pause() can observe EDMA_ST_BUSY right before the interrupt\nhandler completes the final descriptor and moves the channel to\nEDMA_ST_IDLE, and then record EDMA_REQ_PAUSE on an already idle channel. No\nfurther interrupt will acknowledge the request, and since issue_pending()\nrequires EDMA_REQ_NONE, the channel is wedged for good: terminate_all()\nleaves the stale request behind, so even reconfiguring the channel does not\nrecover it.\n\nissue_pending() already runs under vc.lock, but it tests configured before\ntaking it. Move that test under the lock as well, so configured, request,\nand status are evaluated as one channel-state snapshot."
    }
  ],
  "id": "CVE-2026-93040",
  "lastModified": "2026-09-17T17:17:57.117",
  "metrics": {},
  "published": "2026-09-17T17:17:57.117",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2d76b91deeab973dd8a8c2ee587ce27f881de768"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3001cfcee30dcc81f8b3774319c12067f126e49a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6fc436e1500c5e4f0dde2a3dbadf6d898057be8f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b6293a8a38f4d5866ce1a264c138265a02e4c53a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/be0072af8ce6e9458cc586e0e8b41a251e7d4316"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/da16a02f0998a0d455ce6265b836b29ad92e6e58"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f7d1619f3e10c619b62c6cd6d95371b5c526c85a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fe0ffa0190e862ed71e8c1a476090f648c9cb7d9"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

GHSA-3G95-H923-8HFC

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: Serialize channel state checks

pause() and resume() read and update channel state without holding vc.lock, while the interrupt handlers update the same state under it. Take the same lock around those state checks so that request, status, and configured stay consistent.

For example, pause() can observe EDMA_ST_BUSY right before the interrupt handler completes the final descriptor and moves the channel to EDMA_ST_IDLE, and then record EDMA_REQ_PAUSE on an already idle channel. No further interrupt will acknowledge the request, and since issue_pending() requires EDMA_REQ_NONE, the channel is wedged for good: terminate_all() leaves the stale request behind, so even reconfiguring the channel does not recover it.

issue_pending() already runs under vc.lock, but it tests configured before taking it. Move that test under the lock as well, so configured, request, and status are evaluated as one channel-state snapshot.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-93040"
  ],
  "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: Serialize channel state checks\n\npause() and resume() read and update channel state without holding vc.lock,\nwhile the interrupt handlers update the same state under it. Take the same\nlock around those state checks so that request, status, and configured stay\nconsistent.\n\nFor example, pause() can observe EDMA_ST_BUSY right before the interrupt\nhandler completes the final descriptor and moves the channel to\nEDMA_ST_IDLE, and then record EDMA_REQ_PAUSE on an already idle channel. No\nfurther interrupt will acknowledge the request, and since issue_pending()\nrequires EDMA_REQ_NONE, the channel is wedged for good: terminate_all()\nleaves the stale request behind, so even reconfiguring the channel does not\nrecover it.\n\nissue_pending() already runs under vc.lock, but it tests configured before\ntaking it. Move that test under the lock as well, so configured, request,\nand status are evaluated as one channel-state snapshot.",
  "id": "GHSA-3g95-h923-8hfc",
  "modified": "2026-09-17T18:32:08Z",
  "published": "2026-09-17T18:32:07Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93040"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2d76b91deeab973dd8a8c2ee587ce27f881de768"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3001cfcee30dcc81f8b3774319c12067f126e49a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6fc436e1500c5e4f0dde2a3dbadf6d898057be8f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6293a8a38f4d5866ce1a264c138265a02e4c53a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/be0072af8ce6e9458cc586e0e8b41a251e7d4316"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/da16a02f0998a0d455ce6265b836b29ad92e6e58"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f7d1619f3e10c619b62c6cd6d95371b5c526c85a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fe0ffa0190e862ed71e8c1a476090f648c9cb7d9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

CVE-2026-93040 (GCVE-0-2026-93040)

FKIE_CVE-2026-93040

GHSA-3G95-H923-8HFC

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