Vulnerability in Xen
CVE-2023-46842
Unlike 32-bit PV guests, HVM guests may switch freely between 64-bit and other modes. This in particular means that they may set registers used to pass 32-bit-mode hypercall arguments to values outside of the range 32-bit code would be ab…
EPSS: 0.085 (94.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H.
Affected products
- Xen — versions consult Xen advisory XSA-454
- Fedoraproject Fedora — versions 38, 40
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@xen.org (Patch, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Patch, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-46842?
- CVE-2023-46842 is a medium-severity vulnerability in Xen, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 6.5/10. Published 2024-05-16.
- How severe is CVE-2023-46842?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2023-46842 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.