CVE-2022-42335
7.8
HIGH
CVSS 3.1
EPSS 0.09%
Description
x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handling it is possible for a guest with a PCI device passed through to cause the hypervisor to access an arbitrary pointer partially under guest control.
How to fix CVE-2022-42335
To remediate CVE-2022-42335, upgrade the affected package to a fixed version below.
- —upgrade to 4.17.0-r5 or later
- —upgrade to 4.17.1+2-gb773c48e36-1 or later
Is CVE-2022-42335 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.17.0-r5
- from 0, < 4.17.1+2-gb773c48e36-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |