CVE catalog

CVE-2020-25598

xen: CVE-2020-25598

Severity: Medium · CVSS 6.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Published: Sep 23, 2020, 10:15:13 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.42% · Oct 25, 2026

An issue was discovered in Xen 4.14.x. There is a missing unlock in the XENMEM_acquire_resource error path. The RCU (Read, Copy, Update) mechanism is a synchronisation primitive. A buggy error path in the XENMEM_acquire_resource exits without releasing an RCU reference, which is conceptually similar to forgetting to unlock a spinlock. A buggy or malicious HVM stubdomain can cause an RCU reference to be leaked. This causes subsequent administration operations, (e.g., CPU offline) to livelock, resulting in a host Denial of Service. The buggy codepath has been present since Xen 4.12. Xen 4.14 and later are vulnerable to the DoS. The side effects are believed to be benign on Xen 4.12 and 4.13, but patches are provided nevertheless. The vulnerability can generally only be exploited by x86 HVM VMs, as these are generally the only type of VM that have a Qemu stubdomain. x86 PV and PVH domains, as well as ARM VMs, typically don't use a stubdomain. Only VMs using HVM stubdomains can exploit the vulnerability. VMs using PV stubdomains, or with emulators running in dom0, cannot exploit the vulnerability.

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	3.10	`4.12.3-r4`	fixed
Alpine	xen	3.11	`4.13.1-r4`	fixed
Alpine	xen	3.12	`4.13.1-r4`	fixed
Alpine	xen	3.13	`4.14.0-r1`	fixed
Alpine	xen	3.14	`4.14.0-r1`	fixed
Alpine	xen	3.15	`4.14.0-r1`	fixed
Alpine	xen	3.16	`4.14.0-r1`	fixed
Alpine	xen	3.17	`4.14.0-r1`	fixed
Alpine	xen	3.18	`4.14.0-r1`	fixed
Alpine	xen	3.19	`4.14.0-r1`	fixed
Alpine	xen	3.20	`4.14.0-r1`	fixed
Alpine	xen	3.21	`4.14.0-r1`	fixed
Alpine	xen	3.22	`4.14.0-r1`	fixed
Alpine	xen	3.23	`4.14.0-r1`	fixed
Alpine	xen	3.24	`4.14.0-r1`	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	3.10	`4.12.3-r4`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.11	`4.13.1-r4`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.12	`4.13.1-r4`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.13	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.14	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.15	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.16	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.17	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.18	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.19	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.20	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.21	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.22	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.23	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported
Alpine	xen	apk	3.24	`4.14.0-r1`	Not reported	ALPINE-CVE-2020-25598	Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

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

Next results

Observed: Oct 23, 2026, 5:49:28 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]