CVE-2026-49425
Published:August 19, 2026
Updated:September 24, 2026
The compat32 kevent() handler translates a 64-bit kevent struct into a stack- declared 32-bit struct. It did not first zero the stack struct.
An unprivileged user may observe a small amount of uninitialized kernel stack data, which may contain sensitive information.
Affected Packages
https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/15.0.0 <release/15.0.0-p11Fix Suggestion:
Update to version release/15.0.0-p11https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/14.4.0 <release/14.4.0-p7Fix Suggestion:
Update to version release/14.4.0-p7https://github.com/freebsd/freebsd-src.git (GITHUB):
Affected version(s) >=release/14.3.0 <release/14.3.0-p16Fix Suggestion:
Update to version release/14.3.0-p16Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.8
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.5
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Use of Uninitialized Resource
EPSS
Base Score:
0.11