VULNERABILITY INTELLIGENCE

CVE-2022-23092

CVSS score8.8 HIGH
EPSS probability0.65%
CISA KEVNot currently listed
Published2024-02-15
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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. 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.

Weakness classification

  • CWE-787: Out-of-bounds Write

Primary references