CVE-2022-42335 json
x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted…
published 2023-04-25 3 y ago modified 2026-06-17 4 mo 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
Exploit prediction
0.26% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).
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
-
- CWE-476 NULL Pointer Dereference
References
-
xenbits.xenproject.org
/xsa/advisory-430.txt
patch, vendor-advisory
-
xenbits.xen.org
/xsa/advisory-430.html
patch, vendor-advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/PSPFWSY6UOPGMADQGOGN2PAAS5LJRPTG/
vendor-advisory
-
security.gentoo.org
/glsa/202402-07
vendor-advisory
-
openwall.com
/lists/oss-security/2023/04/25/1
mailing-list, third-party-advisory
Sources
- CVE List CVE-2022-42335
- NVD CVE-2022-42335
Fencer Vulns 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.