FKIE_CVE-2026-93215

Vulnerability from fkie_nvd - Published: 2026-09-24 16:17 - Updated: 2026-09-24 16:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: cdx: Fix double free when sysfs file creation fails In cdx_create_res_attr(), if sysfs_create_bin_file() fails, the code frees res_attr but doesn't set cdx_dev->res_attr[num] to NULL. This leaves a dangling pointer in the array. Then cdx_destroy_res_attr() frees the already-freed memory. Fix the double free by initializing cdx_dev->res_attr[num] after sysfs_create_bin_file() completes.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4cd24873ab9fdbd730604881a6e8087bc7b99336
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6f4acc3a3c300e174e3f586b97b04ed8f5948c36
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7e9451bf0bdba6daee1eaf4e7566612af6ca1c32
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/88f4cd42a04bdadd189d7f667a4c279f4e962ca6
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/cdx/cdx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "88f4cd42a04bdadd189d7f667a4c279f4e962ca6",
              "status": "affected",
              "version": "aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d",
              "versionType": "git"
            },
            {
              "lessThan": "4cd24873ab9fdbd730604881a6e8087bc7b99336",
              "status": "affected",
              "version": "aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d",
              "versionType": "git"
            },
            {
              "lessThan": "7e9451bf0bdba6daee1eaf4e7566612af6ca1c32",
              "status": "affected",
              "version": "aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d",
              "versionType": "git"
            },
            {
              "lessThan": "6f4acc3a3c300e174e3f586b97b04ed8f5948c36",
              "status": "affected",
              "version": "aeda33ab8160c7a2e24ba4f44492ad1e974ddc7d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/cdx/cdx.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "lessThan": "6.8",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.109",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.4",
              "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\ncdx: Fix double free when sysfs file creation fails\n\nIn cdx_create_res_attr(), if sysfs_create_bin_file() fails, the code\nfrees res_attr but doesn\u0027t set cdx_dev-\u003eres_attr[num] to NULL. This\nleaves a dangling pointer in the array. Then cdx_destroy_res_attr()\nfrees the already-freed memory. Fix the double free by initializing\ncdx_dev-\u003eres_attr[num] after sysfs_create_bin_file() completes."
    }
  ],
  "id": "CVE-2026-93215",
  "lastModified": "2026-09-24T16:17:16.550",
  "metrics": {},
  "published": "2026-09-24T16:17:16.550",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4cd24873ab9fdbd730604881a6e8087bc7b99336"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6f4acc3a3c300e174e3f586b97b04ed8f5948c36"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/7e9451bf0bdba6daee1eaf4e7566612af6ca1c32"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/88f4cd42a04bdadd189d7f667a4c279f4e962ca6"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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