Vulnerability-Lookup

GHSA-CX6C-JX3R-HWPQ

Vulnerability from github – Published: 2026-07-19 15:30 – Updated: 2026-07-20 15:31

Details

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.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-63865"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-19T15:16:53Z",
    "severity": "HIGH"
  },
  "details": "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": "GHSA-cx6c-jx3r-hwpq",
  "modified": "2026-07-20T15:31:48Z",
  "published": "2026-07-19T15:30:27Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63865"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0d918263c9bfc86078edb2e2f7302a0c6ce42b7c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/26b380a3ca0b605fd8860995ed6a208f276dd316"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/281f2a214565a5cbf8b7355a65738d80bd19b8c5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/452a927cddcd67478d030e646f41cb904a93156f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/989f1b93907de1753a814996222da375f07e579b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/beaf0e96b1da74549a6cabd040f9667d83b2e97e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f0fc2a9828171205244a28013f02889f50b71c9f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-63865 (GCVE-0-2026-63865)

Vulnerability from cvelistv5 – Published: 2026-07-19 14:04 – Updated: 2026-07-20 13:40

Title

bpf: Drop task_to_inode and inet_conn_established from lsm sleepable hooks

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.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Assigner

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/452a927cddcd67478…
https://git.kernel.org/stable/c/f0fc2a98281712052…
https://git.kernel.org/stable/c/26b380a3ca0b605fd…
https://git.kernel.org/stable/c/0d918263c9bfc8607…
https://git.kernel.org/stable/c/281f2a214565a5cbf…
https://git.kernel.org/stable/c/989f1b93907de1753…
https://git.kernel.org/stable/c/beaf0e96b1da74549…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 423f16108c9d832bd96059d5c882c8ef6d76eb96 , < 452a927cddcd67478d030e646f41cb904a93156f (git) Affected: 423f16108c9d832bd96059d5c882c8ef6d76eb96 , < f0fc2a9828171205244a28013f02889f50b71c9f (git) Affected: 423f16108c9d832bd96059d5c882c8ef6d76eb96 , < 26b380a3ca0b605fd8860995ed6a208f276dd316 (git) Affected: 423f16108c9d832bd96059d5c882c8ef6d76eb96 , < 0d918263c9bfc86078edb2e2f7302a0c6ce42b7c (git) Affected: 423f16108c9d832bd96059d5c882c8ef6d76eb96 , < 281f2a214565a5cbf8b7355a65738d80bd19b8c5 (git) Affected: 423f16108c9d832bd96059d5c882c8ef6d76eb96 , < 989f1b93907de1753a814996222da375f07e579b (git) Affected: 423f16108c9d832bd96059d5c882c8ef6d76eb96 , < beaf0e96b1da74549a6cabd040f9667d83b2e97e (git)
Linux	Linux	Affected: 5.11 Unaffected: 0 , < 5.11 (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.209",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.141",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.91",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.33",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.10",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "5.11",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-20T13:40:59.327Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/452a927cddcd67478d030e646f41cb904a93156f"
        },
        {
          "url": "https://git.kernel.org/stable/c/f0fc2a9828171205244a28013f02889f50b71c9f"
        },
        {
          "url": "https://git.kernel.org/stable/c/26b380a3ca0b605fd8860995ed6a208f276dd316"
        },
        {
          "url": "https://git.kernel.org/stable/c/0d918263c9bfc86078edb2e2f7302a0c6ce42b7c"
        },
        {
          "url": "https://git.kernel.org/stable/c/281f2a214565a5cbf8b7355a65738d80bd19b8c5"
        },
        {
          "url": "https://git.kernel.org/stable/c/989f1b93907de1753a814996222da375f07e579b"
        },
        {
          "url": "https://git.kernel.org/stable/c/beaf0e96b1da74549a6cabd040f9667d83b2e97e"
        }
      ],
      "title": "bpf: Drop task_to_inode and inet_conn_established from lsm sleepable hooks",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63865",
    "datePublished": "2026-07-19T14:04:51.215Z",
    "dateReserved": "2026-07-19T07:54:57.017Z",
    "dateUpdated": "2026-07-20T13:40:59.327Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-CX6C-JX3R-HWPQ

CVE-2026-63865 (GCVE-0-2026-63865)

Tags

Sightings

Nomenclature