CVE-2022-23092
criticalpriority · track · 0EPSS 0.007 · 51 %ileEURUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.1–9.9
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (5)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://cxsecurity.com/cveshow/CVE-2022-23092/cnnvd
- https://security.freebsd.org/advisories/FreeBSD-SA-22:12.lib9p.asccnnvd
- https://security.netapp.com/advisory/ntap-20240415-0009/cnnvd
- https://vigilance.fr/vulnerability/FreeBSD-buffer-overflow-via-9p-Message-Handling-39082cnnvd
- https://security.freebsd.org/advisories/FreeBSD-SA-22:12.lib9p.ascenisa_euvd
- https://security.netapp.com/advisory/ntap-20240415-0009/enisa_euvd
- https://security.freebsd.org/advisories/FreeBSD-SA-22:12.lib9p.ascVendor Advisorynvd
- https://security.netapp.com/advisory/ntap-20240415-0009/Third Party Advisorynvd
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