7.8

CVE-2022-42335: fedoraproject fedora NULL Pointer Dereference

Modified
AliasesALPINE-CVE-2022-42335UBUNTU-CVE-2022-42335DEBIAN-CVE-2022-42335
Published 25-04-2023Last modified 03-08-2024

Vulnerability summary

CVE-2022-42335 is a high (CVSS 7.8) NULL Pointer Dereference vulnerability in fedoraproject fedora. EPSS estimates a 0.26% chance of exploitation in the next 30 days, higher than 18.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.8, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
7.8/10
010
High · v3.1 (NVD)
EPSS score
0.26%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 1 · Related 1
SUSE-SU-2023:2535-1

Timeline

  1. 25-04-2023
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.26%

Chance of exploitation in the next 30 days

Percentile

18%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.26% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Alpine1 product
  • xen< 4.17.0-r5
Debian1 product
  • xen< 4.17.1+2-gb773c48e36-1
Fedoraproject1 product
Opensuse1 product
  • xen&distro=openSUSE Tumbleweed< 4.17.1_02-1.1
Ubuntu1 product
  • xenAll versions (No fix recorded)
Xen1 product

6 vendors · 6 products

References

12 links
Show all 12 references