{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2025-40315",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-40315",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-08T00:46:41.896Z",
    "updatedAt": "2026-05-23T16:02:03.665Z",
    "importedAt": "2026-10-24T01:57:34.152Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "usb: gadget: f_fs: Fix epfile null pointer access after ep enable.",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: f_fs: Fix epfile null pointer access after ep enable.\n\nA race condition occurs when ffs_func_eps_enable() runs concurrently\nwith ffs_data_reset(). The ffs_data_clear() called in ffs_data_reset()\nsets ffs->epfiles to NULL before resetting ffs->eps_count to 0, leading\nto a NULL pointer dereference when accessing epfile->ep in\nffs_func_eps_enable() after successful usb_ep_enable().\n\nThe ffs->epfiles pointer is set to NULL in both ffs_data_clear() and\nffs_data_close() functions, and its modification is protected by the\nspinlock ffs->eps_lock. And the whole ffs_func_eps_enable() function\nis also protected by ffs->eps_lock.\n\nThus, add NULL pointer handling for ffs->epfiles in the\nffs_func_eps_enable() function to fix issues",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "c9fc422c9a43e3d58d246334a71f3390401781dc",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b00d2572c16e8e59e979960d3383c2ae9cebd195"
            },
            {
              "version": "0042178a69eb77a979e36a50dcce9794a3140ef8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1c0dbd240be3f87cac321b14e17979b7e9cb6a8f"
            },
            {
              "version": "72a8aee863af099d4434314c4536d6c9a61dcf3c",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9ec40fba7357df2d36f4c2e2f3b9b1a4fba0a272"
            },
            {
              "version": "ebe2b1add1055b903e2acd86b290a85297edc0b3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c53e90563bc148e4e0ad09fe130ba2246d426ea6"
            },
            {
              "version": "ebe2b1add1055b903e2acd86b290a85297edc0b3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fc1141a530dfc91f0ee19b7f422a2d24829584bc"
            },
            {
              "version": "ebe2b1add1055b903e2acd86b290a85297edc0b3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d62b808d5c68a931ad0849a00a5e3be3dd7e0019"
            },
            {
              "version": "ebe2b1add1055b903e2acd86b290a85297edc0b3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "30880e9df27332403dd638a82c27921134b3630b"
            },
            {
              "version": "ebe2b1add1055b903e2acd86b290a85297edc0b3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cfd6f1a7b42f62523c96d9703ef32b0dbc495ba4"
            },
            {
              "version": "32048f4be071f9a6966744243f1786f45bb22dc2",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "cfe5f6fd335d882bcc829a1c8a7d462a455c626e",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "3e078b18753669615301d946297bafd69294ad2c",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.4.180",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.4.302"
            },
            {
              "version": "5.10.101",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.247"
            },
            {
              "version": "5.15.24",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.197"
            },
            {
              "version": "4.14.267",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.15"
            },
            {
              "version": "4.19.230",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.20"
            },
            {
              "version": "5.16.10",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.17"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.17",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.17"
            },
            {
              "version": "5.4.302",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "version": "5.10.247",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.197",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.159",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.117",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.58",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.17.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}