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Fencer Intel
high 7.8

CVE-2022-42335 json

x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted…

published 3y ago modified 4mo ago also EUVD-2022-45410

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 18%
public exploits
0
none known

Summary

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.

Patch / fix

  • xen Debian 14, Debian 13, Debian 12 4.17.1+2-gb773c48e36-1

debian advisories DEBIAN-CVE-2022-42335

  • xen SLE Module for Server Applications 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 4.17.1_04-150500.3.3.1

suse advisories SUSE-SU-2023:2535-1

  • xen openSUSE Tumbleweed 4.17.1_02-1.1

opensuse advisories openSUSE-SU-2024:12917-1

  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 4.17.0-r5

alpine advisories ALPINE-CVE-2022-42335

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Is CVE-2022-42335 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

  • Xen xen

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.