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1 vulnerability found for OpenZFS by OpenZFS
CVE-2026-79619 (GCVE-0-2026-79619)
Vulnerability from cvelistv5 – Published: 2026-08-26 12:50 – Updated: 2026-08-27 17:32
VLAI
EPSS
VEX
Title
OpenZFS: user-namespace capability check allows unprivileged local authorization bypass
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-26 15:47 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
canonical
CNA
References
6 references
Impacted products
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