cve-2026-64054

{
  "cvss": 7.8,
  "datePublished": "2026-07-19T16:17:45.830",
  "dateUpdated": "2026-09-02T21:13:38.937",
  "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: shaper: reject duplicate leaves in GROUP request\n\nnet_shaper_nl_group_doit() does not deduplicate NET_SHAPER_A_LEAVES\nentries. When userspace supplies the same leaf handle twice, the same\nold-parent pointer lands twice in old_nodes[]. The cleanup loop double\nfrees the parent. Of course the same parent may still be in old_nodes[]\ntwice if we are moving multiple of its leaves.\n\nNote that this patch also implicitly fixes the fact that the\ni >= leaves_count path forgets to set ret.",
  "id": "CVE-2026-64054",
  "raw": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "net/shaper/shaper.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "5098b223f0f0c5c18a3884a8b0ea5bd4a0c7bd75",
                "status": "affected",
                "version": "5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e",
                "versionType": "git"
              },
              {
                "lessThan": "31767bf852b59f05125b58a17007e4cd1ea9eb2e",
                "status": "affected",
                "version": "5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e",
                "versionType": "git"
              },
              {
                "lessThan": "a9a2fa1da619f276580b0d4c5d12efac89e8642b",
                "status": "affected",
                "version": "5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e",
                "versionType": "git"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "net/shaper/shaper.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "6.13"
              },
              {
                "lessThan": "6.13",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.34",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.0.*",
                "status": "unaffected",
                "version": "7.0.11",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.1",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
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                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "A4B1EF6D-18D7-4838-BC37-7499D5DCC3C0",
                "versionEndExcluding": "6.18.34",
                "versionStartIncluding": "6.13",
                "vulnerable": true
              },
              {
                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                "versionStartIncluding": "6.19",
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              },
              {
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              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: shaper: reject duplicate leaves in GROUP request\n\nnet_shaper_nl_group_doit() does not deduplicate NET_SHAPER_A_LEAVES\nentries. When userspace supplies the same leaf handle twice, the same\nold-parent pointer lands twice in old_nodes[]. The cleanup loop double\nfrees the parent. Of course the same parent may still be in old_nodes[]\ntwice if we are moving multiple of its leaves.\n\nNote that this patch also implicitly fixes the fact that the\ni >= leaves_count path forgets to set ret."
      }
    ],
    "id": "CVE-2026-64054",
    "lastModified": "2026-09-02T21:13:38.937",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9,
          "source": "nvd@nist.gov",
          "type": "Primary"
        }
      ]
    },
    "published": "2026-07-19T16:17:45.830",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/31767bf852b59f05125b58a17007e4cd1ea9eb2e"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/5098b223f0f0c5c18a3884a8b0ea5bd4a0c7bd75"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/a9a2fa1da619f276580b0d4c5d12efac89e8642b"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-415"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "severity": "HIGH",
  "source": "nvd",
  "title": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: shaper: reject duplicate leaves in GROUP re..."
}