VULNERABILITY INTELLIGENCE
CVE-2022-33740
CVSS score7.1 HIGH
EPSS probability0.33%
CISA KEVNot currently listed
Published2022-07-05
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Description
Linux disk/nic frontends data leaks T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Linux Block and Network PV device frontends don't zero memory regions before sharing them with the backend (CVE-2022-26365, CVE-2022-33740). Additionally the granularity of the grant table doesn't allow sharing less than a 4K page, leading to unrelated data residing in the same 4K page as data shared with a backend being accessible by such backend (CVE-2022-33741, CVE-2022-33742).
Weakness classification
- CWE-212: Improper Removal of Sensitive Information Before Storage or Transfer
Primary references
- security@xen.org — Mailing List, Patch, Third Party Advisory
- security@xen.org — Patch, Vendor Advisory
- security@xen.org — Mailing List, Third Party Advisory
- security@xen.org
- security@xen.org
- security@xen.org — Third Party Advisory
- security@xen.org — Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Patch, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Patch, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108