CVE-2022-33745

3Vexday Risk Score

Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.

ssvc Trackepss 0.3%

probabilidade de exploração

0.3%top 77% das CVEs

exploração observada

nãonenhuma fonte reporta

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.

Produtos afetados

Xen · xen

Referências

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HUFIMNGYP5VQAA6KE3T2I5GW6UP6F7BS/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYI3OMJ7RIZNL3C6GUWNANNPEUUID6FM/https://www.debian.org/security/2022/dsa-5272 https://xenbits.xenproject.org/xsa/advisory-408.txt http://www.openwall.com/lists/oss-security/2022/07/26/2 http://www.openwall.com/lists/oss-security/2022/07/26/3 http://xenbits.xen.org/xsa/advisory-408.html