CVE-2025-68300

Status: DeferredUnscored—

In the Linux kernel, the following vulnerability has been resolved:

fs/namespace: fix reference leak in grab_requested_mnt_ns

lookup_mnt_ns() already takes a reference on mnt_ns. grab_requested_mnt_ns() doesn't need to take an extra reference.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.18%
Percentile among all scored CVEs: 7
Score date: 10/6/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux Kernel^AI

References

Raw JSON (NVD)

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{
  "id": "CVE-2025-68300",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "ba306daa7fa8ae0be5d64c215e9d43a88b4bc8bf",
              "lessThan": "4a16b2a0c1f033f95f5d0b98b9e40e8bf7c4c2c5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8ff97ade912dcfc5ac1783c4b8d615aacd26fd17",
              "lessThan": "fe256e59b8e7f126b2464ee32bd9fee131f0a883",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "78f0e33cd6c939a555aa80dbed2fec6b333a7660",
              "lessThan": "7b6dcd9bfd869eee7693e45b1817dac8c56e5f86",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "fs/namespace.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12.59",
              "lessThan": "6.12.61",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.17.9",
              "lessThan": "6.17.11",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "fs/namespace.c"
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2025-12-16T16:16:09.513",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4a16b2a0c1f033f95f5d0b98b9e40e8bf7c4c2c5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7b6dcd9bfd869eee7693e45b1817dac8c56e5f86",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/fe256e59b8e7f126b2464ee32bd9fee131f0a883",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfs/namespace: fix reference leak in grab_requested_mnt_ns\n\nlookup_mnt_ns() already takes a reference on mnt_ns.\ngrab_requested_mnt_ns() doesn't need to take an extra reference."
    }
  ],
  "lastModified": "2026-06-17T09:58:53.800",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}