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.
Published: 2026-08-19
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Wed, 26 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 26 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'}


Wed, 19 Aug 2026 11:15:00 +0000

Type Values Removed Values Added
First Time appeared Freebsd
Freebsd freebsd
Vendors & Products Freebsd
Freebsd freebsd

Wed, 19 Aug 2026 07:30:00 +0000

Type Values Removed Values Added
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.
Title Kernel stack disclosure in 32-bit compatibility support
Weaknesses CWE-908
References

cve-icon MITRE

Status: PUBLISHED

Assigner: freebsd

Published:

Updated: 2026-08-26T17:53:28.932Z

Reserved: 2026-05-29T20:24:28.616Z

Link: CVE-2026-49425

cve-icon Vulnrichment

Updated: 2026-08-26T17:53:23.806Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-19T08:17:12.160

Modified: 2026-08-26T18:16:36.627

Link: CVE-2026-49425

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-26T20:15:03Z

Weaknesses