Vulnerability Description
x86/HVM pinned cache attributes mis-handling T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To allow cachability control for HVM guests with passed through devices, an interface exists to explicitly override defaults which would otherwise be put in place. While not exposed to the affected guests themselves, the interface specifically exists for domains controlling such guests. This interface may therefore be used by not fully privileged entities, e.g. qemu running deprivileged in Dom0 or qemu running in a so called stub-domain. With this exposure it is an issue that - the number of the such controlled regions was unbounded (CVE-2022-42333), - installation and removal of such regions was not properly serialized (CVE-2022-42334).
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Xen | Xen | >= 4.11.0, <= 4.17.0 |
| Debian | Debian Linux | 11.0 |
| Fedoraproject | Fedora | 37 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2023/03/21/2Mailing ListThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-428.htmlVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202402-07
- https://www.debian.org/security/2023/dsa-5378Third Party Advisory
- https://xenbits.xenproject.org/xsa/advisory-428.txtVendor Advisory
- http://www.openwall.com/lists/oss-security/2023/03/21/2Mailing ListThird Party Advisory
- http://xenbits.xen.org/xsa/advisory-428.htmlVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202402-07
- https://www.debian.org/security/2023/dsa-5378Third Party Advisory
- https://xenbits.xenproject.org/xsa/advisory-428.txtVendor Advisory
FAQ
What is CVE-2022-42334?
CVE-2022-42334 is a vulnerability with a CVSS score of 6.5 (MEDIUM). x86/HVM pinned cache attributes mis-handling T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] To allow cachability contr...
How severe is CVE-2022-42334?
CVE-2022-42334 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-42334?
Check the references section above for vendor advisories and patch information. Affected products include: Xen Xen, Debian Debian Linux, Fedoraproject Fedora.