CVE-2022-33745
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-33745
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-33745.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-33745
- Downstream
- Related
- Published
- 2022-07-26T13:15:10Z
- Modified
- 2025-08-09T19:01:28Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
insufficient TLB flush for x86 PV guests in shadow mode For migration as well as to work around kernels unaware of L1TF (see XSA-273), PV guests may be run in shadow paging mode. To address XSA-401, code was moved inside a function in Xen. This code movement missed a variable changing meaning / value between old and new code positions. The now wrong use of the variable did lead to a wrong TLB flush condition, omitting flushes where such are necessary.
- References
-
- http://www.openwall.com/lists/oss-security/2022/07/26/2
- http://www.openwall.com/lists/oss-security/2022/07/26/3
- http://xenbits.xen.org/xsa/advisory-408.html
- https://www.debian.org/security/2022/dsa-5272
- https://xenbits.xenproject.org/xsa/advisory-408.txt
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HUFIMNGYP5VQAA6KE3T2I5GW6UP6F7BS/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYI3OMJ7RIZNL3C6GUWNANNPEUUID6FM/