CVE-2022-33745 Affecting xen-devel package, versions <4.10.4_36-150000.3.77.1


Severity

Recommended
0.0
high
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-SLES150-XENDEVEL-2963724
  • published30 Jul 2022
  • disclosed29 Jul 2022

Introduced: 29 Jul 2022

CVE-2022-33745  (opens in a new tab)

How to fix?

Upgrade SLES:15.0 xen-devel to version 4.10.4_36-150000.3.77.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen-devel package and not the xen-devel package as distributed by SLES. See How to fix? for SLES:15.0 relevant fixed versions and status.

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.

CVSS Scores

version 3.1