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FKIE_CVE-2026-93170

Vulnerability from fkie_nvd - Published: 2026-09-17 17:18 - Updated: 2026-09-17 17:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: dmaengine: xilinx_dma: Fix channel idle state management in AXIDMA and MCDMA interrupt handlers Fix a race condition in AXIDMA and MCDMA irq handlers where the channel could be incorrectly marked as idle and attempt spurious transfers when descriptors are still being processed. The issue occurs when: 1. Multiple descriptors are queued and active. 2. An interrupt fires after completing some descriptors. 3. xilinx_dma_complete_descriptor() moves completed descriptors to done_list. 4. Channel is marked idle and start_transfer() is called even though active_list still contains unprocessed descriptors. 5. This leads to premature transfer attempts and potential descriptor corruption or missed completions. Only mark the channel as idle and start new transfers when the active list is actually empty, ensuring proper channel state management and avoiding spurious transfer attempts.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0b6d055edb55ecadadf54e930c2b4fab76fa9a5a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/425630e9eea1f9f8912b8c6abf01e0dab1e27917
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5459e02707b27a964ae72e028d3ff72a3b687c4a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7f4b989d7d87381927b98d64492f8dcf979f57ab
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c27d16fd2358b2fc3e1ffaca03afd11dc28630ea
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c3e943490ced0b9ad475844eda7661f6a9bcfb4a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ec927657524be4438447944a58173c7baf7f2384
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fdaf297ab275c6efecac5e87669c31bc89b74297
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/xilinx/xilinx_dma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "7f4b989d7d87381927b98d64492f8dcf979f57ab",
              "status": "affected",
              "version": "c0bba3a99f0709c24c2c7ada7cb098966b1d791f",
              "versionType": "git"
            },
            {
              "lessThan": "5459e02707b27a964ae72e028d3ff72a3b687c4a",
              "status": "affected",
              "version": "c0bba3a99f0709c24c2c7ada7cb098966b1d791f",
              "versionType": "git"
            },
            {
              "lessThan": "425630e9eea1f9f8912b8c6abf01e0dab1e27917",
              "status": "affected",
              "version": "c0bba3a99f0709c24c2c7ada7cb098966b1d791f",
              "versionType": "git"
            },
            {
              "lessThan": "fdaf297ab275c6efecac5e87669c31bc89b74297",
              "status": "affected",
              "version": "c0bba3a99f0709c24c2c7ada7cb098966b1d791f",
              "versionType": "git"
            },
            {
              "lessThan": "c27d16fd2358b2fc3e1ffaca03afd11dc28630ea",
              "status": "affected",
              "version": "c0bba3a99f0709c24c2c7ada7cb098966b1d791f",
              "versionType": "git"
            },
            {
              "lessThan": "ec927657524be4438447944a58173c7baf7f2384",
              "status": "affected",
              "version": "c0bba3a99f0709c24c2c7ada7cb098966b1d791f",
              "versionType": "git"
            },
            {
              "lessThan": "c3e943490ced0b9ad475844eda7661f6a9bcfb4a",
              "status": "affected",
              "version": "c0bba3a99f0709c24c2c7ada7cb098966b1d791f",
              "versionType": "git"
            },
            {
              "lessThan": "0b6d055edb55ecadadf54e930c2b4fab76fa9a5a",
              "status": "affected",
              "version": "c0bba3a99f0709c24c2c7ada7cb098966b1d791f",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/xilinx/xilinx_dma.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.7"
            },
            {
              "lessThan": "4.7",
              "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: xilinx_dma: Fix channel idle state management in AXIDMA and MCDMA interrupt handlers\n\nFix a race condition in AXIDMA and MCDMA irq handlers where the channel\ncould be incorrectly marked as idle and attempt spurious transfers when\ndescriptors are still being processed.\n\nThe issue occurs when:\n1. Multiple descriptors are queued and active.\n2. An interrupt fires after completing some descriptors.\n3. xilinx_dma_complete_descriptor() moves completed descriptors to\ndone_list.\n4. Channel is marked idle and start_transfer() is called even though\n   active_list still contains unprocessed descriptors.\n5. This leads to premature transfer attempts and potential descriptor\n   corruption or missed completions.\n\nOnly mark the channel as idle and start new transfers when the active list\nis actually empty, ensuring proper channel state management and avoiding\nspurious transfer attempts."
    }
  ],
  "id": "CVE-2026-93170",
  "lastModified": "2026-09-17T17:18:12.700",
  "metrics": {},
  "published": "2026-09-17T17:18:12.700",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0b6d055edb55ecadadf54e930c2b4fab76fa9a5a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/425630e9eea1f9f8912b8c6abf01e0dab1e27917"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5459e02707b27a964ae72e028d3ff72a3b687c4a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7f4b989d7d87381927b98d64492f8dcf979f57ab"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c27d16fd2358b2fc3e1ffaca03afd11dc28630ea"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c3e943490ced0b9ad475844eda7661f6a9bcfb4a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ec927657524be4438447944a58173c7baf7f2384"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fdaf297ab275c6efecac5e87669c31bc89b74297"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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