CVE catalog

CVE-2026-42492

Xenstore, to have an up-to-date picture of the entire system, wants to know of domains appearing and disappearing. To make this more robust, a new XEN_DOMCTL_get_domain_state was introduced. The man

[CVE catalog]

Severity: Medium · CVSS 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Published: Jul 28, 2026, 12:31:28 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.61% · Oct 25, 2026

Xenstore, to have an up-to-date picture of the entire system, wants to know of domains appearing and disappearing. To make this more robust, a new XEN_DOMCTL_get_domain_state was introduced. The management of the bitmap underlying that operation is tied into the binding of the VIRQ_DOM_EXC virtual IRQ. Unfortunately an error path there would tear down the bitmap even in cases when it wasn't set up. Unprivileged domains can trigger that error path.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	xen	sid	`4.20.4+39-gf1e1321c87-1`	not affected
Debian	xen	forky	`4.20.4+39-gf1e1321c87-1`	not affected
Debian	xen	trixie	`4.20.3+127-gc42374a105-0+deb13u1`	not affected
Debian	xen	trixie-security	`4.20.4+39-gf1e1321c87-0+deb13u1`	not affected
Debian	xen	bookworm	`4.17.5+72-g01140da4e8-1`	not affected
Debian	xen	bookworm-security	`4.17.7-0+deb12u1`	not affected
Alpine	xen	3.24	`4.21.2-r0`	fixed
Opensuse	xen	tumbleweed	`4.22.0_02-1.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	xen	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	xen	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	xen	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	xen	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Alpine	xen	apk	3.24	`4.21.2-r0`	Not reported	ALPINE-CVE-2026-42492	Not reported
Opensuse	xen	rpm	tumbleweed	`4.22.0_02-1.1`	Not reported	OPENSUSE-SU-2026:11441-1	Not reported

OpenFactory catalog packages

[openSUSE Tumbleweed]

[xen-devel]Unknown
Source package: [xen]
Details (1)
- 4.22.0_02-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 4.22.0_02-1.1
  Version impact unknown
  nvd · xen · opensuse · tumbleweed
[xen-doc-html]Unknown
Source package: [xen]
Details (1)
- 4.22.0_02-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 4.22.0_02-1.1
  Version impact unknown
  nvd · xen · opensuse · tumbleweed
[xen-libs]Unknown
Source package: [xen]
Details (1)
- 4.22.0_02-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 4.22.0_02-1.1
  Version impact unknown
  nvd · xen · opensuse · tumbleweed
[xen-tools]Unknown
Source package: [xen]
Details (1)
- 4.22.0_02-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 4.22.0_02-1.1
  Version impact unknown
  nvd · xen · opensuse · tumbleweed
[xen-tools-domU]Unknown
Source package: [xen]
Details (1)
- 4.22.0_02-2.1 · x86_64 · tumbleweed
  Unknown · Fixed: 4.22.0_02-1.1
  Version impact unknown
  nvd · xen · opensuse · tumbleweed
[xen-tools-xendomains-wait-disk]Unknown
Source package: [xen]
Details (1)
- 4.22.0_02-2.1 · noarch · tumbleweed
  Unknown · Fixed: 4.22.0_02-1.1
  Version impact unknown
  nvd · xen · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[libxencall1]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[libxen-dev]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[libxendevicemodel1]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[libxenevtchn1]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[libxenforeignmemory1]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[libxengnttab1]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[libxenhypfs1]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[libxenmisc4.17]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[libxenstore4]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[libxentoolcore1]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[libxentoollog1]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[xen-doc]Not affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[xen-hypervisor-4.17-amd64]Not affected
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm
[xen-hypervisor-4.17-amd64-dbg]Not affected
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Not affected
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Not affected
  nvd · xen · debian · bookworm

Next results

Observed: Oct 27, 2026, 7:11:25 AM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]