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

Vulnerability from cvelistv5 – Published: 2026-07-19 14:04 – Updated: 2026-07-20 13:40
VLAI
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
References
Impacted 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)
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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)
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-07-21T19:20:46+00:00",
      "cve": "CVE-2026-63865",
      "id": "CVE-2026-63865",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: bpf: Drop task_to_inode and inet_conn_established from lsm sleepable hooks",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-63865.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.