CVE-2026-101306
Published:October 15, 2026
Updated:October 18, 2026
SCM_RIGHTS file descriptor passing did not preserve FD_RESOLVE_BENEATH when a descriptor was transferred. A process could clear the restriction by sending the descriptor to itself over a Unix domain socket.
A process in a jail that has received a directory file descriptor from another jail can use these techniques to escape the jail's filesystem root restriction.
Affected Packages
https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) =release/14.5.0 <release/14.5.0-p1Fix Suggestion:
Update to version release/14.5.0-p1https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/15.0.0 <release/15.0.0-p14Fix Suggestion:
Update to version release/15.0.0-p14https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/15.1.0 <release/15.1.0-p4Fix Suggestion:
Update to version release/15.1.0-p4https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/14.4.0 <release/14.4.0-p10Fix Suggestion:
Update to version release/14.4.0-p10Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH