CVE-2026-63865 - Vulnerability Details

- bpf: Drop task_to_inode and inet_conn_established from lsm sleepable hooks

Description

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.

Published: 2026-07-19

Score: 8.8 High

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Linux

unaffected

Version	Status	Constraints
`423f16108c9d832bd96059d5c882c8ef6d76eb96`	affected	< 452a927cddcd67478d030e646f41cb904a93156f
`423f16108c9d832bd96059d5c882c8ef6d76eb96`	affected	< f0fc2a9828171205244a28013f02889f50b71c9f
`423f16108c9d832bd96059d5c882c8ef6d76eb96`	affected	< 26b380a3ca0b605fd8860995ed6a208f276dd316
`423f16108c9d832bd96059d5c882c8ef6d76eb96`	affected	< 0d918263c9bfc86078edb2e2f7302a0c6ce42b7c
`423f16108c9d832bd96059d5c882c8ef6d76eb96`	affected	< 281f2a214565a5cbf8b7355a65738d80bd19b8c5
`423f16108c9d832bd96059d5c882c8ef6d76eb96`	affected	< 989f1b93907de1753a814996222da375f07e579b
`423f16108c9d832bd96059d5c882c8ef6d76eb96`	affected	< beaf0e96b1da74549a6cabd040f9667d83b2e97e

Linux

affected

Version	Status	Constraints
`5.11`	affected	—
`0`	unaffected	< 5.11
`5.15.209`	unaffected	≤ 5.15.*
`6.1.175`	unaffected	≤ 6.1.*
`6.6.141`	unaffected	≤ 6.6.*
`6.12.91`	unaffected	≤ 6.12.*
`6.18.33`	unaffected	≤ 6.18.*
`7.0.10`	unaffected	≤ 7.0.*
`7.1`	unaffected	≤ *

No data.

Vendor Product Confidence Versions

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`[423f16108c9d832bd96059d5c882c8ef6d76eb96,452a927cddcd67478d030e646f41cb904a93156f)`	affected	code_commit	—
`[423f16108c9d832bd96059d5c882c8ef6d76eb96,f0fc2a9828171205244a28013f02889f50b71c9f)`	affected	code_commit	—
`[423f16108c9d832bd96059d5c882c8ef6d76eb96,26b380a3ca0b605fd8860995ed6a208f276dd316)`	affected	code_commit	—
`[423f16108c9d832bd96059d5c882c8ef6d76eb96,0d918263c9bfc86078edb2e2f7302a0c6ce42b7c)`	affected	code_commit	—
`[423f16108c9d832bd96059d5c882c8ef6d76eb96,281f2a214565a5cbf8b7355a65738d80bd19b8c5)`	affected	code_commit	—
`[423f16108c9d832bd96059d5c882c8ef6d76eb96,989f1b93907de1753a814996222da375f07e579b)`	affected	code_commit	—
`[423f16108c9d832bd96059d5c882c8ef6d76eb96,beaf0e96b1da74549a6cabd040f9667d83b2e97e)`	affected	code_commit	—

Linux

Linux Kernel

99%

Version	Status	Scheme	Platform
`5.11`	affected	generic	—
`[0,5.11)`	unaffected	generic	—
`[5.15.209,5.16.0)`	unaffected	semver	—
`[6.1.175,6.2.0)`	unaffected	semver	—
`[6.6.141,6.7.0)`	unaffected	semver	—
`[6.12.91,6.13.0)`	unaffected	semver	—
`[6.18.33,6.19.0)`	unaffected	semver	—
`[7.0.10,7.1.0)`	unaffected	semver	—
`[7.1,*]`	unaffected	generic	—

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Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

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Advisories

Source	ID	Title
Ubuntu USN	USN-8574-1	Linux kernel (GCP FIPS) vulnerabilities
Ubuntu USN	USN-8575-1	Linux kernel vulnerabilities
Ubuntu USN	USN-8576-1	Linux kernel (NVIDIA Tegra) vulnerabilities

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00121.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://git.kernel.org/stable/c/0d918263c9bfc86078edb2e2f7302a0c6ce42b7c
https://git.kernel.org/stable/c/26b380a3ca0b605fd8860995ed6a208f276dd316
https://git.kernel.org/stable/c/281f2a214565a5cbf8b7355a65738d80bd19b8c5
https://git.kernel.org/stable/c/452a927cddcd67478d030e646f41cb904a93156f
https://git.kernel.org/stable/c/989f1b93907de1753a814996222da375f07e579b
https://git.kernel.org/stable/c/beaf0e96b1da74549a6cabd040f9667d83b2e97e
https://git.kernel.org/stable/c/f0fc2a9828171205244a28013f02889f50b71c9f

History

Mon, 20 Jul 2026 14:45:00 +0000

Type	Values Removed	Values Added
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}`

Sun, 19 Jul 2026 14:45:00 +0000

Type	Values Removed	Values Added
Description		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.
Title		bpf: Drop task_to_inode and inet_conn_established from lsm sleepable hooks
First Time appeared		Linux Linux linux Kernel
CPEs		cpe:2.3:o:linux:linux_kernel::::::::
Vendors & Products		Linux Linux linux Kernel
References		https://git.kernel.org/stable/c/0d918263c9bfc86078edb2e2f7302a0c6ce42b7c https://git.kernel.org/stable/c/26b380a3ca0b605fd8860995ed6a208f276dd316 https://git.kernel.org/stable/c/281f2a214565a5cbf8b7355a65738d80bd19b8c5 https://git.kernel.org/stable/c/452a927cddcd67478d030e646f41cb904a93156f https://git.kernel.org/stable/c/989f1b93907de1753a814996222da375f07e579b https://git.kernel.org/stable/c/beaf0e96b1da74549a6cabd040f9667d83b2e97e https://git.kernel.org/stable/c/f0fc2a9828171205244a28013f02889f50b71c9f

Subscriptions

Linux Linux Kernel

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2026-07-19T14:04:51.215Z

Updated: 2026-07-20T13:40:59.327Z

Reserved: 2026-07-19T07:54:57.017Z

Link: CVE-2026-63865

Vulnrichment

No data.

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-07-21T03:15:02Z

Weaknesses

No weakness.

Tracking

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Subscriptions

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