FKIE_CVE-2026-63865

Vulnerability from fkie_nvd - Published: 2026-07-19 15:16 - Updated: 2026-07-20 15:16
Severity
8.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: bpf: Drop task_to_inode and inet_conn_established from lsm sleepable hooks bpf_lsm_task_to_inode() is called under rcu_read_lock() and bpf_lsm_inet_conn_established() is called from softirq context, so neither hook can be used by sleepable LSM programs.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0d918263c9bfc86078edb2e2f7302a0c6ce42b7c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/26b380a3ca0b605fd8860995ed6a208f276dd316
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/281f2a214565a5cbf8b7355a65738d80bd19b8c5
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/452a927cddcd67478d030e646f41cb904a93156f
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/989f1b93907de1753a814996222da375f07e579b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/beaf0e96b1da74549a6cabd040f9667d83b2e97e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f0fc2a9828171205244a28013f02889f50b71c9f
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/bpf_lsm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "452a927cddcd67478d030e646f41cb904a93156f",
              "status": "affected",
              "version": "423f16108c9d832bd96059d5c882c8ef6d76eb96",
              "versionType": "git"
            },
            {
              "lessThan": "f0fc2a9828171205244a28013f02889f50b71c9f",
              "status": "affected",
              "version": "423f16108c9d832bd96059d5c882c8ef6d76eb96",
              "versionType": "git"
            },
            {
              "lessThan": "26b380a3ca0b605fd8860995ed6a208f276dd316",
              "status": "affected",
              "version": "423f16108c9d832bd96059d5c882c8ef6d76eb96",
              "versionType": "git"
            },
            {
              "lessThan": "0d918263c9bfc86078edb2e2f7302a0c6ce42b7c",
              "status": "affected",
              "version": "423f16108c9d832bd96059d5c882c8ef6d76eb96",
              "versionType": "git"
            },
            {
              "lessThan": "281f2a214565a5cbf8b7355a65738d80bd19b8c5",
              "status": "affected",
              "version": "423f16108c9d832bd96059d5c882c8ef6d76eb96",
              "versionType": "git"
            },
            {
              "lessThan": "989f1b93907de1753a814996222da375f07e579b",
              "status": "affected",
              "version": "423f16108c9d832bd96059d5c882c8ef6d76eb96",
              "versionType": "git"
            },
            {
              "lessThan": "beaf0e96b1da74549a6cabd040f9667d83b2e97e",
              "status": "affected",
              "version": "423f16108c9d832bd96059d5c882c8ef6d76eb96",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/bpf_lsm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.11"
            },
            {
              "lessThan": "5.11",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "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\nbpf: Drop task_to_inode and inet_conn_established from lsm sleepable hooks\n\nbpf_lsm_task_to_inode() is called under rcu_read_lock() and\nbpf_lsm_inet_conn_established() is called from softirq context, so\nneither hook can be used by sleepable LSM programs."
    }
  ],
  "id": "CVE-2026-63865",
  "lastModified": "2026-07-20T15:16:52.470",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.0,
        "impactScore": 6.0,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-07-19T15:16:53.400",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0d918263c9bfc86078edb2e2f7302a0c6ce42b7c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/26b380a3ca0b605fd8860995ed6a208f276dd316"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/281f2a214565a5cbf8b7355a65738d80bd19b8c5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/452a927cddcd67478d030e646f41cb904a93156f"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/989f1b93907de1753a814996222da375f07e579b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/beaf0e96b1da74549a6cabd040f9667d83b2e97e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f0fc2a9828171205244a28013f02889f50b71c9f"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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