CVE-2023-46839

mediumpriority · track · 0EPSS 0.008 · 57 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

0.80% (57th) EPSS

CVSS 4.1 · medium

Is it mine?

19 products

Check your exposure

Who says so?

5 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

PCI devices can make use of a functionality called phantom functions, that when enabled allows the device to generate requests using the IDs of functions that are otherwise unpopulated. This allows a device to extend the number of outstanding requests. Such phantom functions need an IOMMU context setup, but failure to setup the context is not fatal when the device is assigned. Not failing device assignment when such failure happens can lead to the primary device being assigned to a guest, while some of the phantom functions are assigned to a different domain.

cvss

Technical severity, 0–10. One row per scoring source.

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.14.1mediumAV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondary · ENISA EU

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:Nsecondaryexploitability 3.9 · impact 1.4

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-119USCWE-20USCWE-264US

affected products (19)

Products and version ranges known to be affected.

Fedora Linuxall versionscert_bundDEcpe:/o:fedoraproject:fedora:-
Gentoo Linuxall versionscert_bundDEcpe:/o:gentoo:linux:-
Open Source Xen <xsa449-4.16.patchall versionscert_bundDE
Open Source Xen Xen 4.17.x <xsa449.patchall versionscert_bundDE
Open Source Xen Xen 4.17.x <xsa450.patchall versionscert_bundDE
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:enterprise
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Open Source Xen≤ Xen 4.17.x <xsa449.patchcert_bundDE
Open Source Xen≤ Xen 4.17.x <xsa450.patchcert_bundDE
Open Source Xen< xsa449-4.16.patchcert_bundDE
Fedora Project Fedora≤ 39fstec_bduRU
Fedora Project Fedora≤ 38fstec_bduRU
The Linux Foundation Xen4.15.0 → 4.15.5fstec_bduRU
The Linux Foundation Xen4.16.0 → 4.16.5fstec_bduRU
The Linux Foundation Xen4.17.0 → 4.17.2fstec_bduRU
АО «НППКТ» ОСОН ОСнова Оnyx≤ 2.14fstec_bduRU
ООО «Ред Софт» РЕД ОС≤ 7.3fstec_bduRU
fedoraproject fedora= 39nvdUScpe:2.3:o:fedoraproject:fedora:*:*:*:*:*:*:*:*
xen xenall versionsnvdUScpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-0261Xen: Mehrere SchwachstellenDeutsch2024-01-30csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in Xen ausnutzen, um Informationen offenzulegen oder Sicherheitsvorkehrungen zu umgehen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund nvd NVD CVE.org MITRE

published 2024-03-20modified 2026-06-17

references (10)

External citations — patches, advisories, analysis.

scry

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