vulnerability
FreeBSD: VID-8eaaf135-1893-11ed-9b22-002590c1f29c (CVE-2022-23092): FreeBSD -- Missing bounds check in 9p message handling
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 9 | (AV:N/AC:M/Au:N/C:C/I:C/A:C) | Aug 10, 2022 | Nov 4, 2022 | Dec 10, 2025 |
Severity
9
CVSS
(AV:N/AC:M/Au:N/C:C/I:C/A:C)
Published
Aug 10, 2022
Added
Nov 4, 2022
Modified
Dec 10, 2025
Description
Problem Description: The implementation of lib9p's handling of RWALK messages was missing a bounds check needed when unpacking the message contents. The missing check means that the receipt of a specially crafted message will cause lib9p to overwrite unrelated memory. Impact: The bug can be triggered by a malicious bhyve guest kernel to overwrite memory in the bhyve(8) process. This could potentially lead to user-mode code execution on the host, subject to bhyve's Capsicum sandbox.
Solutions
freebsd-upgrade-base-13_1-release-p1freebsd-upgrade-base-13_0-release-p12
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