CVE catalog

CVE-2020-29479

xen: CVE-2020-29479

Severity: Medium
Published: Dec 15, 2020, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 0.31% · Oct 25, 2026

An issue was discovered in Xen through 4.14.x. In the Ocaml xenstored implementation, the internal representation of the tree has special cases for the root node, because this node has no parent. Unfortunately, permissions were not checked for certain operations on the root node. Unprivileged guests can get and modify permissions, list, and delete the root node. (Deleting the whole xenstore tree is a host-wide denial of service.) Achieving xenstore write access is also possible. All systems using oxenstored are vulnerable. Building and using oxenstored is the default in the upstream Xen distribution, if the Ocaml compiler is available. Systems using C xenstored are not vulnerable.

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`	fixed
Debian	xen	bookworm-security	`4.17.7-0+deb12u1`	fixed
Alpine	xen	3.11	`4.13.2-r3`	fixed
Alpine	xen	3.12	`4.13.2-r3`	fixed
Alpine	xen	3.13	`4.14.1-r0`	fixed
Alpine	xen	3.14	`4.14.1-r0`	fixed
Alpine	xen	3.15	`4.14.1-r0`	fixed
Alpine	xen	3.16	`4.14.1-r0`	fixed
Alpine	xen	3.17	`4.14.1-r0`	fixed
Alpine	xen	3.18	`4.14.1-r0`	fixed
Alpine	xen	3.19	`4.14.1-r0`	fixed
Alpine	xen	3.20	`4.14.1-r0`	fixed
Alpine	xen	3.21	`4.14.1-r0`	fixed
Alpine	xen	3.22	`4.14.1-r0`	fixed
Alpine	xen	3.23	`4.14.1-r0`	fixed
Alpine	xen	3.24	`4.14.1-r0`	fixed
Ubuntu	xen	16.04	`4.5.1-0ubuntu1`	vulnerable
Ubuntu	xen	16.04	`4.5.1-0ubuntu2`	vulnerable
Ubuntu	xen	16.04	`4.6.0-1ubuntu1`	vulnerable
Ubuntu	xen	16.04	`4.6.0-1ubuntu2`	vulnerable
Ubuntu	xen	16.04	`4.6.0-1ubuntu4`	vulnerable
Ubuntu	xen	16.04	`4.6.0-1ubuntu4.1`	vulnerable
Ubuntu	xen	16.04	`4.6.0-1ubuntu4.2`	vulnerable
Ubuntu	xen	16.04	`4.6.0-1ubuntu4.3`	vulnerable
Ubuntu	xen	16.04	`4.6.5-0ubuntu1`	vulnerable
Ubuntu	xen	16.04	`4.6.5-0ubuntu1.1`	vulnerable
Ubuntu	xen	16.04	`4.6.5-0ubuntu1.2`	vulnerable
Ubuntu	xen	16.04	`4.6.5-0ubuntu1.4`	vulnerable
Ubuntu	xen	18.04	`4.9.0-0ubuntu3`	vulnerable
Ubuntu	xen	18.04	`4.9.0-0ubuntu4`	vulnerable
Ubuntu	xen	18.04	`4.9.2-0ubuntu1`	vulnerable
Ubuntu	xen	20.04	`4.9.2-0ubuntu2`	vulnerable
Ubuntu	xen	20.04	`4.9.2-0ubuntu6`	vulnerable
Ubuntu	xen	20.04	`4.9.2-0ubuntu7`	vulnerable
Ubuntu	xen	20.04	`4.11.3+24-g14b62ab3e5-1ubuntu1`	vulnerable
Ubuntu	xen	20.04	`4.11.3+24-g14b62ab3e5-1ubuntu2`	vulnerable
Ubuntu	xen	20.04	`4.11.3+24-g14b62ab3e5-1ubuntu2.2`	vulnerable
Ubuntu	xen	20.04	`4.11.3+24-g14b62ab3e5-1ubuntu2.3`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	xen	source	sid	`4.14.0+88-g1d1d1f5391-1`	not yet assigned	Not reported	Not reported
Debian	xen	source	forky	`4.14.0+88-g1d1d1f5391-1`	not yet assigned	Not reported	Not reported
Debian	xen	source	trixie	`4.14.0+88-g1d1d1f5391-1`	not yet assigned	Not reported	Not reported
Debian	xen	source	bookworm	`4.14.0+88-g1d1d1f5391-1`	not yet assigned	Not reported	Not reported
Alpine	xen	apk	3.11	`4.13.2-r3`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.12	`4.13.2-r3`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.13	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.14	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.15	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.16	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.17	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.18	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.19	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.20	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.21	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.22	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.23	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	Not reported
Alpine	xen	apk	3.24	`4.14.1-r0`	Not reported	ALPINE-CVE-2020-29479	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
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[libxen-dev]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[libxendevicemodel1]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[libxenevtchn1]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[libxenforeignmemory1]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[libxengnttab1]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[libxenhypfs1]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[libxenmisc4.17]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[libxenstore4]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[libxentoolcore1]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[libxentoollog1]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[xen-doc]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[xen-hypervisor-4.17-amd64]Unknown
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[xen-hypervisor-4.17-amd64-dbg]Unknown
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[xen-hypervisor-4.17-arm64]Unknown
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[xen-hypervisor-4.17-arm64-dbg]Unknown
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[xen-hypervisor-common]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[xenstore-utils]Unknown
Source package: [xen]
Details (4)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[xen-system-amd64]Unknown
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · amd64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
[xen-system-arm64]Unknown
Source package: [xen]
Details (2)
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12
- 4.17.5+72-g01140da4e8-1 · arm64 · bookworm-security
  Fixed · Fixed: 4.14.0+88-g1d1d1f5391-1
  dsa · xen · debian · bookworm; dsa · xen · debian · 12

Next results

Observed: Oct 23, 2026, 5:51:22 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]