xen: x86: unintended memory sharing between guests On Intel systems that support the "virtualize APIC accesses" feature, a...
CVE-2022-42327 is fixed in xen on 1 platform, first by DEBIAN-CVE-2022-42327, released November 1, 2022. It is not reported as exploited. Patch Radar priority: High.
x86: unintended memory sharing between guests On Intel systems that support the "virtualize APIC accesses" feature, a guest can read and write the global shared xAPIC page by moving the local APIC out of xAPIC mode. Access to this shared page bypasses the expected isolation that should exist between two guests.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| xen · Debian 12.15 (bookworm) | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-42327 | Nov 1, 2022 |
| xen · Debian 13.5 (trixie) | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-42327 | Nov 1, 2022 |
| xen · Debian 14 | 4.16.2+90-g0d39a6d1ae-1 | DEBIAN-CVE-2022-42327 | Nov 1, 2022 |
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