FKIE_CVE-2025-68312

Vulnerability from fkie_nvd - Published: 2025-12-16 16:16 - Updated: 2026-06-17 09:58
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: usbnet: Prevents free active kevent The root cause of this issue are: 1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0); put the kevent work in global workqueue. However, the kevent has not yet been scheduled when the usbnet device is unregistered. Therefore, executing free_netdev() results in the "free active object (kevent)" error reported here. 2. Another factor is that when calling usbnet_disconnect()->unregister_netdev(), if the usbnet device is up, ndo_stop() is executed to cancel the kevent. However, because the device is not up, ndo_stop() is not executed. The solution to this problem is to cancel the kevent before executing free_netdev().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/285d4b953f2ca03c358f986718dd89ee9bde632e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2ce1de32e05445d77fc056f6ff8339cfb78a5f84
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/3a10619fdefd3051aeb14860e4d4335529b4e94d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/420c84c330d1688b8c764479e5738bbdbf0a33de
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/43005002b60ef3424719ecda16d124714b45da3b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5158fb8da162e3982940f30cd01ed77bdf42c6fc
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/88a38b135d69f5db9024ff6527232f1b51be8915
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/9a579d6a39513069d298eee70770bbac8a148565
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/usb/usbnet.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "285d4b953f2ca03c358f986718dd89ee9bde632e",
              "status": "affected",
              "version": "8b4588b8b00b299be16a35be67b331d8fdba03f3",
              "versionType": "git"
            },
            {
              "lessThan": "88a38b135d69f5db9024ff6527232f1b51be8915",
              "status": "affected",
              "version": "135199a2edd459d2b123144efcd7f9bcd95128e4",
              "versionType": "git"
            },
            {
              "lessThan": "43005002b60ef3424719ecda16d124714b45da3b",
              "status": "affected",
              "version": "635fd8953e4309b54ca6a81bed1d4a87668694f4",
              "versionType": "git"
            },
            {
              "lessThan": "3a10619fdefd3051aeb14860e4d4335529b4e94d",
              "status": "affected",
              "version": "a69e617e533edddf3fa3123149900f36e0a6dc74",
              "versionType": "git"
            },
            {
              "lessThan": "9a579d6a39513069d298eee70770bbac8a148565",
              "status": "affected",
              "version": "a69e617e533edddf3fa3123149900f36e0a6dc74",
              "versionType": "git"
            },
            {
              "lessThan": "2ce1de32e05445d77fc056f6ff8339cfb78a5f84",
              "status": "affected",
              "version": "a69e617e533edddf3fa3123149900f36e0a6dc74",
              "versionType": "git"
            },
            {
              "lessThan": "5158fb8da162e3982940f30cd01ed77bdf42c6fc",
              "status": "affected",
              "version": "a69e617e533edddf3fa3123149900f36e0a6dc74",
              "versionType": "git"
            },
            {
              "lessThan": "420c84c330d1688b8c764479e5738bbdbf0a33de",
              "status": "affected",
              "version": "a69e617e533edddf3fa3123149900f36e0a6dc74",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d2d6b530d89b0a912148018027386aa049f0a309",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e2a521a7dcc463c5017b4426ca0804e151faeff7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7f77dcbc030c2faa6d8e8a594985eeb34018409e",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d49bb8cf9bfaa06aa527eb30f1a52a071da2e32f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "db3b738ae5f726204876f4303c49cfdf4311403f",
              "versionType": "git"
            },
            {
              "lessThan": "5.4.302",
              "status": "affected",
              "version": "5.4.211",
              "versionType": "semver"
            },
            {
              "lessThan": "5.10.247",
              "status": "affected",
              "version": "5.10.137",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.197",
              "status": "affected",
              "version": "5.15.61",
              "versionType": "semver"
            },
            {
              "lessThan": "4.10",
              "status": "affected",
              "version": "4.9.326",
              "versionType": "semver"
            },
            {
              "lessThan": "4.15",
              "status": "affected",
              "version": "4.14.291",
              "versionType": "semver"
            },
            {
              "lessThan": "4.20",
              "status": "affected",
              "version": "4.19.256",
              "versionType": "semver"
            },
            {
              "lessThan": "5.19",
              "status": "affected",
              "version": "5.18.18",
              "versionType": "semver"
            },
            {
              "lessThan": "5.20",
              "status": "affected",
              "version": "5.19.2",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/usb/usbnet.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.0"
            },
            {
              "lessThan": "6.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.302",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.247",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.197",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.159",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.117",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.58",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "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\nusbnet: Prevents free active kevent\n\nThe root cause of this issue are:\n1. When probing the usbnet device, executing usbnet_link_change(dev, 0, 0);\nput the kevent work in global workqueue. However, the kevent has not yet\nbeen scheduled when the usbnet device is unregistered. Therefore, executing\nfree_netdev() results in the \"free active object (kevent)\" error reported\nhere.\n\n2. Another factor is that when calling usbnet_disconnect()-\u003eunregister_netdev(),\nif the usbnet device is up, ndo_stop() is executed to cancel the kevent.\nHowever, because the device is not up, ndo_stop() is not executed.\n\nThe solution to this problem is to cancel the kevent before executing\nfree_netdev()."
    }
  ],
  "id": "CVE-2025-68312",
  "lastModified": "2026-06-17T09:58:55.003",
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-68312",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-16T16:25:55.310081Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-12-16T16:16:10.770",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/285d4b953f2ca03c358f986718dd89ee9bde632e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2ce1de32e05445d77fc056f6ff8339cfb78a5f84"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/3a10619fdefd3051aeb14860e4d4335529b4e94d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/420c84c330d1688b8c764479e5738bbdbf0a33de"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/43005002b60ef3424719ecda16d124714b45da3b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5158fb8da162e3982940f30cd01ed77bdf42c6fc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/88a38b135d69f5db9024ff6527232f1b51be8915"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/9a579d6a39513069d298eee70770bbac8a148565"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}


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