CVE-2026-46255 (GCVE-0-2026-46255)
Vulnerability from cvelistv5
Published
2026-06-03 15:49
Modified
2026-06-03 15:49
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: dmaengine: fsl-edma: don't explicitly disable clocks in .remove() The clocks in fsl_edma_engine::muxclk are allocated and enabled with devm_clk_get_enabled(), which automatically cleans these resources up, but these clocks are also manually disabled in fsl_edma_remove(). This causes warnings on driver removal for each clock: edma_module already disabled WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1200 clk_core_disable+0x198/0x1c8 [...] Call trace: clk_core_disable+0x198/0x1c8 (P) clk_disable+0x34/0x58 fsl_edma_remove+0x74/0xe8 [fsl_edma] [...] ---[ end trace 0000000000000000 ]--- edma_module already unprepared WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1059 clk_core_unprepare+0x1f8/0x220 [...] Call trace: clk_core_unprepare+0x1f8/0x220 (P) clk_unprepare+0x34/0x58 fsl_edma_remove+0x7c/0xe8 [fsl_edma] [...] ---[ end trace 0000000000000000 ]--- Fix these warnings by removing the unnecessary fsl_disable_clocks() call in fsl_edma_remove().
References
Impacted products
Vendor Product Version
Linux Linux Version: a9903de3aa16731846bf924342eca44bdabe9be6
Version: a9903de3aa16731846bf924342eca44bdabe9be6
Version: a9903de3aa16731846bf924342eca44bdabe9be6
Version: a9903de3aa16731846bf924342eca44bdabe9be6
Version: a9903de3aa16731846bf924342eca44bdabe9be6
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/dma/fsl-edma-main.c"
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          "programFiles": [
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          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
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              "version": "6.19.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndmaengine: fsl-edma: don\u0027t explicitly disable clocks in .remove()\n\nThe clocks in fsl_edma_engine::muxclk are allocated and enabled with\ndevm_clk_get_enabled(), which automatically cleans these resources up,\nbut these clocks are also manually disabled in fsl_edma_remove(). This\ncauses warnings on driver removal for each clock:\n\n        edma_module already disabled\n        WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1200 clk_core_disable+0x198/0x1c8\n        [...]\n        Call trace:\n         clk_core_disable+0x198/0x1c8 (P)\n         clk_disable+0x34/0x58\n         fsl_edma_remove+0x74/0xe8 [fsl_edma]\n         [...]\n        ---[ end trace 0000000000000000 ]---\n        edma_module already unprepared\n        WARNING: CPU: 0 PID: 418 at drivers/clk/clk.c:1059 clk_core_unprepare+0x1f8/0x220\n        [...]\n        Call trace:\n         clk_core_unprepare+0x1f8/0x220 (P)\n         clk_unprepare+0x34/0x58\n         fsl_edma_remove+0x7c/0xe8 [fsl_edma]\n         [...]\n        ---[ end trace 0000000000000000 ]---\n\nFix these warnings by removing the unnecessary fsl_disable_clocks() call\nin fsl_edma_remove()."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-03T15:49:52.091Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/533d495f15e4c88ad5246c7f90ae026702e28d75"
        },
        {
          "url": "https://git.kernel.org/stable/c/68feac21bd4de7ae4faba05704c404861d991fcf"
        },
        {
          "url": "https://git.kernel.org/stable/c/bda244871179543dd3be7d093236cb33b2fb1765"
        },
        {
          "url": "https://git.kernel.org/stable/c/b84dba68c4823da452cec99a5d213571a65d06de"
        },
        {
          "url": "https://git.kernel.org/stable/c/666c53e94c1d0bf0bdf14c49505ece9ddbe725bc"
        }
      ],
      "title": "dmaengine: fsl-edma: don\u0027t explicitly disable clocks in .remove()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46255",
    "datePublished": "2026-06-03T15:49:52.091Z",
    "dateReserved": "2026-05-13T15:03:33.107Z",
    "dateUpdated": "2026-06-03T15:49:52.091Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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