CVE catalog

CVE-2026-23558

Severity: High · CVSS 7.8CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Published: Apr 28, 2026, 2:46:52 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.12% · Oct 25, 2026

The adjustments made for XSA-379 as well as those subsequently becoming XSA-387 still left a race window, when a HVM or PVH guest does a grant table version change from v2 to v1 in parallel with mapping the status page(s) via XENMEM_add_to_physmap. Some of the status pages may then be freed while mappings of them would still be inserted into the guest's secondary (P2M) page tables.

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`	fixed
Debian	xen	forky	`4.20.4+39-gf1e1321c87-1`	fixed
Debian	xen	trixie	`4.20.3+127-gc42374a105-0+deb13u1`	fixed
Debian	xen	trixie-security	`4.20.4+39-gf1e1321c87-0+deb13u1`	fixed
Debian	xen	bookworm	`4.17.5+72-g01140da4e8-1`	vulnerable
Debian	xen	bookworm-security	`4.17.7-0+deb12u1`	fixed
Cpe	xen	Not reported	Not reported	vulnerable
Cpe	xen	Not reported	Not reported	unknown
Cpe	xen	Not reported	Not reported	unknown
Alpine	xen	3.20	`4.18.5-r7`	fixed
Alpine	xen	3.21	`4.19.5-r2`	fixed
Alpine	xen	3.22	`4.20.3-r2`	fixed
Alpine	xen	3.23	`4.20.3-r2`	fixed
Alpine	xen	3.24	`4.21.1-r3`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	xen	source	sid	`4.20.3+127-gc42374a105-1`	not yet assigned	Not reported	Not reported
Debian	xen	source	forky	`4.20.3+127-gc42374a105-1`	not yet assigned	Not reported	Not reported
Debian	xen	source	trixie	`4.20.3+127-gc42374a105-0+deb13u1`	not yet assigned	Not reported	Not reported
Debian	xen	source	bookworm	`4.17.7-0+deb12u1`	not yet assigned	Not reported	Not reported
Alpine	xen	apk	3.20	`4.18.5-r7`	Not reported	ALPINE-CVE-2026-23558	Not reported
Alpine	xen	apk	3.21	`4.19.5-r2`	Not reported	ALPINE-CVE-2026-23558	Not reported
Alpine	xen	apk	3.22	`4.20.3-r2`	Not reported	ALPINE-CVE-2026-23558	Not reported
Alpine	xen	apk	3.23	`4.20.3-r2`	Not reported	ALPINE-CVE-2026-23558	Not reported
Alpine	xen	apk	3.24	`4.21.1-r3`	Not reported	ALPINE-CVE-2026-23558	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libxencall1]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[libxen-dev]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[libxendevicemodel1]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[libxenevtchn1]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[libxenforeignmemory1]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[libxengnttab1]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[libxenhypfs1]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[libxenmisc4.17]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[libxenstore4]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[libxentoolcore1]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[libxentoollog1]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[xen-doc]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[xen-hypervisor-4.17-amd64]Affected
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[xen-hypervisor-4.17-amd64-dbg]Affected
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[xen-hypervisor-4.17-arm64]Affected
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[xen-hypervisor-4.17-arm64-dbg]Affected
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[xen-hypervisor-common]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[xenstore-utils]Affected
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[xen-system-amd64]Affected
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
[xen-system-arm64]Affected
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Affected · Fixed: 4.17.7-0+deb12u1
  nvd · xen · debian · bookworm

Next results

Observed: Oct 27, 2026, 7:55:04 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]