Information disclosure

For migration as well as to work around kernels unaware of L1TF see XSA-273, PV guests may be run in shadow paging mode. Since Xen itself needs to be mapped when PV guests run, Xen and shadowed PV guests run directly the respective shadow page tables. For 64-bit PV guests this means running on th...

CVE-2023-34322

CVE-2023-34322 concerns Xen hypervisor shadow paging handling during memory pressure. In PV (paravirtualized) guests, Xen and shadowed PV guests map the guest root page table in shadow mode, so 64-bit PV guests operate on the shadow root page table. Under memory scarcity, shadows of page tables m...

CVE-2022-33745

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 / val...

Design/Logic Flaw

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 / val...

CVE-2022-33745

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 / val...

CVE-2022-33745

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 / val...

CVE-2022-33745

The CVE-2022-33745 issue is in the Xen hypervisor affecting x86 paravirtualized guests. The root cause is an incorrect TLB flush condition after code movement inside Xen, causing some necessary TLB flushes to be omitted when running PV guests in shadow paging mode (to support migrations and L1TF ...

Fedora 28 : xen (2018-683dfde81a) (Foreshadow)

L1 Terminal Fault speculative side channel patch bundle XSA-273, CVE-2018-3620, CVE-2018-3646 drop patches also in the bundle, which also includes Use of v2 grant tables may cause crash on ARM XSA-268 1616081 x86: Incorrect MSRDEBUGCTL handling lets guests enable BTS XSA-269 1616077 oxenstored do...

Fedora 27 : xen (2018-915602df63) (Foreshadow)

L1 Terminal Fault speculative side channel patch bundle XSA-273, CVE-2018-3620, CVE-2018-3646 drop patches also in the bundle, which also includes Use of v2 grant tables may cause crash on ARM XSA-268 1616081 x86: Incorrect MSRDEBUGCTL handling lets guests enable BTS XSA-269 1616077 oxenstored do...

Xen Project Speculative Execution Side Channel Vulnerability (XSA-273) (Foreshadow)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a speculative execution side channel attack known as L1 Terminal Fault L1TF. An attacker who successfully exploited L1TF may be able to read privileged data across trust boundaries. Note...