CVE-2025-68185 (GCVE-0-2025-68185)

Vulnerability from cvelistv5 – Published: 2025-12-16 13:43 – Updated: 2026-06-16 19:21
VLAI
Title
nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing
Summary
In the Linux kernel, the following vulnerability has been resolved: nfs4_setup_readdir(): insufficient locking for ->d_parent->d_inode dereferencing Theoretically it's an oopsable race, but I don't believe one can manage to hit it on real hardware; might become doable on a KVM, but it still won't be easy to attack. Anyway, it's easy to deal with - since xdr_encode_hyper() is just a call of put_unaligned_be64(), we can put that under ->d_lock and be done with that.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-16 19:21 UTC
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 7033 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 6025f641a0e30afdc5aa62017397b1860ad9f677 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < e6cafe71eb3b5579b245ba1bd528a181e77f3df1 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < fa4daf7d11e45b72aad5d943a7ab991f869fff79 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 504b3fb9948a9e96ebbabdee0d33966a8bab15cb (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < eacfd08b26a062f1095b18719715bc82ad35312e (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < 40be5b9080114f18b0cea386db415b68a7273c1a (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < f5e570eaab36a110c6ffda32b87c51170990c2d1 (git)
Affected: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 , < a890a2e339b929dbd843328f9a92a1625404fe63 (git)
guessed Create a notification for this product.
Linux Linux Affected: 2.6.12
Unaffected: 0 , < 2.6.12 (semver)
Unaffected: 5.4.302 , ≤ 5.4.* (semver)
Unaffected: 5.10.247 , ≤ 5.10.* (semver)
Unaffected: 5.15.197 , ≤ 5.15.* (semver)
Unaffected: 6.1.159 , ≤ 6.1.* (semver)
Unaffected: 6.6.117 , ≤ 6.6.* (semver)
Unaffected: 6.12.58 , ≤ 6.12.* (semver)
Unaffected: 6.17.8 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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            ],
            "providerMetadata": {
              "dateUpdated": "2026-06-16T19:21:17.527Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "defaultStatus": "unaffected",
              "product": "Linux",
              "programFiles": [
                "fs/nfs/nfs4proc.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "lessThan": "6025f641a0e30afdc5aa62017397b1860ad9f677",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                },
                {
                  "lessThan": "e6cafe71eb3b5579b245ba1bd528a181e77f3df1",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                },
                {
                  "lessThan": "fa4daf7d11e45b72aad5d943a7ab991f869fff79",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                },
                {
                  "lessThan": "504b3fb9948a9e96ebbabdee0d33966a8bab15cb",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                },
                {
                  "lessThan": "eacfd08b26a062f1095b18719715bc82ad35312e",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                },
                {
                  "lessThan": "40be5b9080114f18b0cea386db415b68a7273c1a",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                },
                {
                  "lessThan": "f5e570eaab36a110c6ffda32b87c51170990c2d1",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                },
                {
                  "lessThan": "a890a2e339b929dbd843328f9a92a1625404fe63",
                  "status": "affected",
                  "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
                  "versionType": "git"
                }
              ]
            },
            {
              "defaultStatus": "affected",
              "product": "Linux",
              "programFiles": [
                "fs/nfs/nfs4proc.c"
              ],
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "vendor": "Linux",
              "versions": [
                {
                  "status": "affected",
                  "version": "2.6.12"
                },
                {
                  "lessThan": "2.6.12",
                  "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"
                }
              ]
            }
          ],
          "cpeApplicability": [
            {
              "nodes": [
                {
                  "cpeMatch": [
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.4.302",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.10.247",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "5.15.197",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.1.159",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.6.117",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.12.58",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.17.8",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    },
                    {
                      "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                      "versionEndExcluding": "6.18",
                      "versionStartIncluding": "2.6.12",
                      "vulnerable": true
                    }
                  ],
                  "negate": false,
                  "operator": "OR"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfs4_setup_readdir(): insufficient locking for -\u003ed_parent-\u003ed_inode dereferencing\n\nTheoretically it\u0027s an oopsable race, but I don\u0027t believe one can manage\nto hit it on real hardware; might become doable on a KVM, but it still\nwon\u0027t be easy to attack.\n\nAnyway, it\u0027s easy to deal with - since xdr_encode_hyper() is just a call of\nput_unaligned_be64(), we can put that under -\u003ed_lock and be done with that."
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-05-11T21:48:18.325Z",
            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "shortName": "Linux"
          },
          "references": [
            {
              "url": "https://git.kernel.org/stable/c/6025f641a0e30afdc5aa62017397b1860ad9f677"
            },
            {
              "url": "https://git.kernel.org/stable/c/e6cafe71eb3b5579b245ba1bd528a181e77f3df1"
            },
            {
              "url": "https://git.kernel.org/stable/c/fa4daf7d11e45b72aad5d943a7ab991f869fff79"
            },
            {
              "url": "https://git.kernel.org/stable/c/504b3fb9948a9e96ebbabdee0d33966a8bab15cb"
            },
            {
              "url": "https://git.kernel.org/stable/c/eacfd08b26a062f1095b18719715bc82ad35312e"
            },
            {
              "url": "https://git.kernel.org/stable/c/40be5b9080114f18b0cea386db415b68a7273c1a"
            },
            {
              "url": "https://git.kernel.org/stable/c/f5e570eaab36a110c6ffda32b87c51170990c2d1"
            },
            {
              "url": "https://git.kernel.org/stable/c/a890a2e339b929dbd843328f9a92a1625404fe63"
            }
          ],
          "title": "nfs4_setup_readdir(): insufficient locking for -\u003ed_parent-\u003ed_inode dereferencing",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2025-68185",
        "datePublished": "2025-12-16T13:43:02.894Z",
        "dateReserved": "2025-12-16T13:41:40.252Z",
        "dateUpdated": "2026-06-16T19:21:22.682Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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