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CVE-2022-33745 PUBLISHED

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.

EPSS 0.07% · 20.5th percentile

Risk Scores

EPSS Score
0.07%
20.5th percentile

Affected Products

VendorProductVersions
fedoraprojectfedora35, 36
debiandebian_linux11.0
Xenxenconsult Xen advisory XSA-408
CitrixXenServer
xenxen
XENXen

Timeline

References

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