CVE-2021-28702

EPSS 0.44%
Veröffentlicht 06.10.2021 14:15:07
Zuletzt bearbeitet 21.11.2024 06:00:10
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PCI devices with RMRRs not deassigned correctly Certain PCI devices in a system might be assigned Reserved Memory Regions (specified via Reserved Memory Region Reporting, "RMRR"). These are typically used for platform tasks such as legacy USB emulation. If such a device is passed through to a guest, then on guest shutdown the device is not properly deassigned. The IOMMU configuration for these devices which are not properly deassigned ends up pointing to a freed data structure, including the IO Pagetables. Subsequent DMA or interrupts from the device will have unpredictable behaviour, ranging from IOMMU faults to memory corruption.

Betroffene Produkte Warnungen 0 Metriken 3 CWE 1 Referenzen 10

NVD 5 VulnDex Vulnerability Enrichment 0

Daten sind bereitgestellt durch National Vulnerability Database (NVD)

Xen ≫ Xen Version >= 4.13.0 <= 4.15.1

Fedoraproject ≫ Fedora Version 33

Fedoraproject ≫ Fedora Version 34

Fedoraproject ≫ Fedora Version 35

Debian ≫ Debian Linux Version 9.0

Zu dieser CVE wurde keine Warnung gefunden.

EPSS Metriken
Typ	Quelle	Score	Percentile
EPSS	FIRST.org	0.44%	0.363

CVSS Metriken
Quelle	Base Score	Exploit Score	Impact Score	Vector String
NIST	7.6	0.9	6	CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NIST	4.6	3.9	6.4	AV:L/AC:L/Au:N/C:P/I:P/A:P

CWE-269 Improper Privilege Management

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

https://security.gentoo.org/glsa/202208-23

Third Party Advisory

http://www.openwall.com/lists/oss-security/2021/10/07/2

Third Party Advisory

Mailing List

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2OIHEJ3R3EH5DYI2I5UMD2ULJ2ELA3EX/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FDPRMOBBLS74ONYP3IXZZXSTLKR7GRQB/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TRAWV6PO2KUGVZTESERECOBUBZ6X45I7/

https://www.debian.org/security/2021/dsa-5017

Third Party Advisory

https://xenbits.xenproject.org/xsa/advisory-386.txt

Vendor Advisory

https://nvd.nist.gov/vuln/detail/CVE-2021-28702

CVE Source (NVD)

https://cveawg.mitre.org/api/cve/CVE-2021-28702

CVE Source (JSON)

https://euvd.enisa.europa.eu/vulnerability/CVE-2021-28702

EUVD

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CVE-2021-28702