FKIE_CVE-2026-98210

Vulnerability from fkie_nvd - Published: 2026-10-06 09:18 - Updated: 2026-10-06 09:18
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: mmc: mxcmmc: cancel data work and watchdog on remove mxcmci_remove() frees the host through the devm tail, but neither it nor mmc_remove_host() drains the driver's own asynchronous state. host->watchdog, a 10 s timer armed on the DMA path in mxcmci_setup_data(), is deleted only by the DMA- and IRQ-complete paths, which the remove path does not explicitly drain; it can therefore fire after the host is freed and dereference it in mxcmci_watchdog(). host->datawork, armed from the IRQ handler on the PIO path, is not cancelled by the remove path either. Free the devm-registered IRQ, then cancel datawork and delete the watchdog in mxcmci_remove(), before dma_release_channel(). Freeing the IRQ first keeps a trailing handler from re-arming datawork between the cancel and the host free. Both callbacks are non-self-rearming. This issue was found by an in-house static analysis tool.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/23383e0578b58ba2dc0730cf9f7806bd66bf859a
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/314966b490323bdcfd3162a1398b00e587e0ced4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/740f595f8ad678cb4d79f13edd12851df2492bdd
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a1ff367e0dc961d73707add508a95df5c3509bd1
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ae10838a7cdf0e54caa9d0a4f488704fd04e7f01
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3641afe6ee76d852834a34ef0669eefced32752
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d3a421c82412344022982d5b91ba23194a0a6f29
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e2948c4232209e87c861a680f20f1e3cf8a57fec
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/mmc/host/mxcmmc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "740f595f8ad678cb4d79f13edd12851df2492bdd",
              "status": "affected",
              "version": "f6ad0a481342223b2e7ae9f55b154e14f1391ada",
              "versionType": "git"
            },
            {
              "lessThan": "d3641afe6ee76d852834a34ef0669eefced32752",
              "status": "affected",
              "version": "f6ad0a481342223b2e7ae9f55b154e14f1391ada",
              "versionType": "git"
            },
            {
              "lessThan": "314966b490323bdcfd3162a1398b00e587e0ced4",
              "status": "affected",
              "version": "f6ad0a481342223b2e7ae9f55b154e14f1391ada",
              "versionType": "git"
            },
            {
              "lessThan": "ae10838a7cdf0e54caa9d0a4f488704fd04e7f01",
              "status": "affected",
              "version": "f6ad0a481342223b2e7ae9f55b154e14f1391ada",
              "versionType": "git"
            },
            {
              "lessThan": "a1ff367e0dc961d73707add508a95df5c3509bd1",
              "status": "affected",
              "version": "f6ad0a481342223b2e7ae9f55b154e14f1391ada",
              "versionType": "git"
            },
            {
              "lessThan": "23383e0578b58ba2dc0730cf9f7806bd66bf859a",
              "status": "affected",
              "version": "f6ad0a481342223b2e7ae9f55b154e14f1391ada",
              "versionType": "git"
            },
            {
              "lessThan": "e2948c4232209e87c861a680f20f1e3cf8a57fec",
              "status": "affected",
              "version": "f6ad0a481342223b2e7ae9f55b154e14f1391ada",
              "versionType": "git"
            },
            {
              "lessThan": "d3a421c82412344022982d5b91ba23194a0a6f29",
              "status": "affected",
              "version": "f6ad0a481342223b2e7ae9f55b154e14f1391ada",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/mmc/host/mxcmmc.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.7"
            },
            {
              "lessThan": "3.7",
              "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\nmmc: mxcmmc: cancel data work and watchdog on remove\n\nmxcmci_remove() frees the host through the devm tail, but neither it nor\nmmc_remove_host() drains the driver\u0027s own asynchronous state.\nhost-\u003ewatchdog, a 10 s timer armed on the DMA path in mxcmci_setup_data(),\nis deleted only by the DMA- and IRQ-complete paths, which the remove path\ndoes not explicitly drain; it can therefore fire after the host is freed\nand dereference it in mxcmci_watchdog().  host-\u003edatawork, armed from the\nIRQ handler on the PIO path, is not cancelled by the remove path either.\n\nFree the devm-registered IRQ, then cancel datawork and delete the watchdog\nin mxcmci_remove(), before dma_release_channel().  Freeing the IRQ first\nkeeps a trailing handler from re-arming datawork between the cancel and\nthe host free.  Both callbacks are non-self-rearming.\n\nThis issue was found by an in-house static analysis tool."
    }
  ],
  "id": "CVE-2026-98210",
  "lastModified": "2026-10-06T09:18:07.333",
  "metrics": {},
  "published": "2026-10-06T09:18:07.333",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/23383e0578b58ba2dc0730cf9f7806bd66bf859a"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/314966b490323bdcfd3162a1398b00e587e0ced4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/740f595f8ad678cb4d79f13edd12851df2492bdd"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a1ff367e0dc961d73707add508a95df5c3509bd1"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ae10838a7cdf0e54caa9d0a4f488704fd04e7f01"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d3641afe6ee76d852834a34ef0669eefced32752"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d3a421c82412344022982d5b91ba23194a0a6f29"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e2948c4232209e87c861a680f20f1e3cf8a57fec"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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