Cyber Resilience

CVE-2022-33745

High

Published: 26 July 2022

Published
26 July 2022
Modified
21 November 2024
KEV Added
—
Patch
26 July 2022
CVSS Score v3.1 8.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS Score 0.0008 23.2th percentile
Risk Priority 18 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2022-33745 is a high-severity an unspecified weakness vulnerability in Fedoraproject Fedora. Its CVSS base score is 8.8 (High).

Operationally, ranked at the 23.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability 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…

more

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.

CWE(s)
NVD-CWE-noinfo

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

xen
xen
all versions
debian
debian linux
11.0
fedoraproject
fedora
35, 36

Mitigating Controls

No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.

References