FKIE_CVE-2026-97600

Vulnerability from fkie_nvd - Published: 2026-09-25 11:17 - Updated: 2026-09-25 11:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: ieee802154: cc2520: fix FIFOP work use-after-free The FIFOP interrupt handler queues cc2520_fifop_irqwork. On removal, cc2520_remove() only flushes the work. The devm-managed FIFOP IRQ remains active until after ->remove() returns and can queue the work again after that flush, allowing it to run after the private data is released. Disable the work with disable_work_sync() instead of flushing it, so the handler can no longer queue it once removal begins. Destroy the buffer mutex last, since the worker and the stop callback invoked through ieee802154_unregister_hw() both take it. Found by an in-house static analysis tool.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/56a9919d8494fb118eebf167bef0622528fbf2e7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/890a80d516a1447db5c21bf92841a82914ea897d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c68fd52c73b676aee67020011e98fea125a978f4
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ff5891b266a7fc6a062710836be84f1cc19338b5
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ieee802154/cc2520.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "56a9919d8494fb118eebf167bef0622528fbf2e7",
              "status": "affected",
              "version": "0da6bc8cc3417a5e452efb886ff2c61e72b743d6",
              "versionType": "git"
            },
            {
              "lessThan": "c68fd52c73b676aee67020011e98fea125a978f4",
              "status": "affected",
              "version": "0da6bc8cc3417a5e452efb886ff2c61e72b743d6",
              "versionType": "git"
            },
            {
              "lessThan": "890a80d516a1447db5c21bf92841a82914ea897d",
              "status": "affected",
              "version": "0da6bc8cc3417a5e452efb886ff2c61e72b743d6",
              "versionType": "git"
            },
            {
              "lessThan": "ff5891b266a7fc6a062710836be84f1cc19338b5",
              "status": "affected",
              "version": "0da6bc8cc3417a5e452efb886ff2c61e72b743d6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/ieee802154/cc2520.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.17"
            },
            {
              "lessThan": "3.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc3",
              "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\nieee802154: cc2520: fix FIFOP work use-after-free\n\nThe FIFOP interrupt handler queues cc2520_fifop_irqwork.  On removal,\ncc2520_remove() only flushes the work.  The devm-managed FIFOP IRQ\nremains active until after -\u003eremove() returns and can queue the work\nagain after that flush, allowing it to run after the private data is\nreleased.\n\nDisable the work with disable_work_sync() instead of flushing it, so\nthe handler can no longer queue it once removal begins.  Destroy the\nbuffer mutex last, since the worker and the stop callback invoked\nthrough ieee802154_unregister_hw() both take it.\n\nFound by an in-house static analysis tool."
    }
  ],
  "id": "CVE-2026-97600",
  "lastModified": "2026-09-25T11:17:11.353",
  "metrics": {},
  "published": "2026-09-25T11:17:11.353",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/56a9919d8494fb118eebf167bef0622528fbf2e7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/890a80d516a1447db5c21bf92841a82914ea897d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c68fd52c73b676aee67020011e98fea125a978f4"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ff5891b266a7fc6a062710836be84f1cc19338b5"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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