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CVE-2022-33745

Status Candidate

Overview

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.

Related Files

Debian Security Advisory 5272-1
Posted Nov 7, 2022
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5272-1 - Multiple vulnerabilities have been discovered in the Xen hypervisor, which could result in privilege escalation, denial of service or information leaks.

tags | advisory, denial of service, vulnerability
systems | linux, debian
advisories | CVE-2022-33745, CVE-2022-33746, CVE-2022-33747, CVE-2022-33748, CVE-2022-42309, CVE-2022-42310, CVE-2022-42311, CVE-2022-42312, CVE-2022-42313, CVE-2022-42314, CVE-2022-42315, CVE-2022-42316, CVE-2022-42317, CVE-2022-42318
SHA-256 | 425a48f085cf69bff81f19c64877e7708b1282a50c4f464feb0623f801fa60ed
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