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Alpine Linux: CVE-2022-33745: Vulnerability in Xen

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Alpine Linux: CVE-2022-33745: Vulnerability in Xen

Severity
7
CVSS
(AV:L/AC:L/Au:S/C:C/I:C/A:C)
Published
07/26/2022
Created
03/22/2024
Added
03/26/2024
Modified
06/11/2024

Description

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.

Solution(s)

  • alpine-linux-upgrade-xen

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