CVE-2026-79619

Published: Ago 26, 2026 Last Modified: Ago 26, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,3
Attack Vector: local
Attack Complexity: low
Privileges Required: low
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

On Linux, several OpenZFS ioctl authorization checks accept a capability held only within a user-created, unprivileged namespace as equivalent to real host privilege, allowing an unprivileged local user to perform operations that should require root. Affected operations include pool-administrative operations (eg create, import, destroy), pool event log access (zpool events) and fault injection (zinject). Exploiting the problem requires only that the local user is permitted to open /dev/zfs (governed by local device permissions) and that the kernel permits unprivileged user namespace creation. No prior access to the target pool or its underlying devices is needed.

863

Incorrect Authorization

Incomplete
Common Consequences
Security Scopes Affected:
Confidentiality Integrity Access Control Availability
Potential Impacts:
Read Application Data Read Files Or Directories Modify Application Data Modify Files Or Directories Gain Privileges Or Assume Identity Bypass Protection Mechanism Execute Unauthorized Code Or Commands Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Dos: Resource Consumption (Other)
Applicable Platforms
Technologies: Web Server, Database Server, Not Technology-Specific
View CWE Details
https://github.com/advisories/GHSA-mhf5-q8gw-qg9v
https://github.com/openzfs/zfs/pull/18959
https://github.com/openzfs/zfs/releases/tag/zfs-2.2.11
https://github.com/openzfs/zfs/releases/tag/zfs-2.3.9
https://github.com/openzfs/zfs/releases/tag/zfs-2.4.4