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Fencer Vulns
medium 4.6

CVE-2022-23035 json

Insufficient cleanup of passed-through device IRQs The management of IRQs associated with physical devices exposed to x86 HVM guests involv…

published 2022-01-25 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-28146

cvss
4.6
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 29%
public exploits
0
none known

Summary

Insufficient cleanup of passed-through device IRQs The management of IRQs associated with physical devices exposed to x86 HVM guests involves an iterative operation in particular when cleaning up after the guest's use of the device. In the case where an interrupt is not quiescent yet at the time this cleanup gets invoked, the cleanup attempt may be scheduled to be retried. When multiple interrupts are involved, this scheduling of a retry may get erroneously skipped. At the same time pointers may get cleared (resulting in a de-reference of NULL) and freed (resulting in a use-after-free), while other code would continue to assume them to be valid.

Patch / fix

  • xen Debian 14, Debian 13, Debian 12 4.16.0+51-g0941d6cb-1

debian advisories DEBIAN-CVE-2022-23035

  • xen SLES for SAP 12 SP5, SLES 12 SP5, SLE Software Development Kit 12 SP5 4.12.4_18-3.58.2
  • xen SLES for SAP 15 SP1, SLES 15 SP1-LTSS, SLES 15 SP1-BCL +3 more 4.12.4_18-3.60.2
  • xen SLES for SAP 15 SP2, SLES 15 SP2-LTSS, SLES 15 SP2-BCL +8 more 4.13.4_04-3.43.2
  • xen SLES for SAP 12 SP3, SLES 12 SP3-LTSS, SLES 12 SP3-BCL +3 more 4.9.4_26-3.100.1
  • xen SLES 12 SP2-BCL 4.7.6_20-43.85.1
  • xen SLE Module for Server Applications 15 SP3, SLE Module for Basesystem 15 SP3, SLE Micro 5.1 4.14.3_06-150300.3.18.2
  • xen SLES for SAP 15, SLE High Performance Computing 15-LTSS, SLE High Performance Computing 15-ESPOS 4.10.4_32-3.71.1
  • xen SLES for SAP 12 SP4, SLES 12 SP4-LTSS, OpenStack Cloud Crowbar 9 +1 more 4.11.4_26-2.68.1

suse advisories SUSE-SU-2022:14886-1SUSE-SU-2022:0469-1SUSE-SU-2022:0468-1SUSE-SU-2022:0467-1SUSE-SU-2022:0359-1SUSE-SU-2022:0342-1

  • xen openSUSE Tumbleweed 4.16.0_04-3.1
  • xen openSUSE Leap 15.3 4.14.3_06-150300.3.18.2

opensuse advisories openSUSE-SU-2024:11781-1openSUSE-SU-2022:0333-1

  • xen Alpine 3.12 4.13.4-r3
  • xen Alpine 3.13 4.14.5-r0
  • xen Alpine 3.15, Alpine 3.14 4.15.2-r0
  • xen Alpine 3.24, Alpine 3.23, Alpine 3.22 +6 more 4.16.1-r0

alpine advisories ALPINE-CVE-2022-23035

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

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-23035 updated cvss 4.6

xen: Insufficient cleanup of passed-through device IRQs (XSA-395)

  • Red Hat Enterprise Linux 5 kernel-xen
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 4.6 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.7 AV:L/AC:M/Au:N/C:N/I:N/A:C

Affected products

  • Xen xen

Classification

Weakness

References

Sources

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.