8.8

CVE-2022-33745

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Xen ≫ Xen HwPlatformx86
Debian ≫ Debian Linux Version11.0
Fedoraproject ≫ Fedora Version35
Fedoraproject ≫ Fedora Version36
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.29% 0.207
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.8 2 6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYI3OMJ7RIZNL3C6GUWNANNPEUUID6FM/
http://www.openwall.com/lists/oss-security/2022/07/26/2
Patch
Third Party Advisory
Mailing List
http://www.openwall.com/lists/oss-security/2022/07/26/3
Patch
Third Party Advisory
Mailing List
http://xenbits.xen.org/xsa/advisory-408.html
Patch
Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HUFIMNGYP5VQAA6KE3T2I5GW6UP6F7BS/
https://www.debian.org/security/2022/dsa-5272
Third Party Advisory
https://xenbits.xenproject.org/xsa/advisory-408.txt
Vendor Advisory