CVE-2026-49425
Kernel stack disclosure in 32-bit compatibility support
- State
- Published
- Severity
- 5.5 Medium
- Published
- Aug 19, 2026
- Updated
- Aug 26, 2026
- Reserved
- May 29, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 5.5 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N | CISA-ADP |
Weaknesses
- CWE-908 Use of Uninitialized Resource
Affected Products
| Product | Versions |
|---|---|
FreeBSDFreeBSD |
|
References
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