CVE-2023-46839 Affecting xen-tools-xendomains-wait-disk package, versions <4.17.3_06-150500.3.24.1


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-SLES155-XENTOOLSXENDOMAINSWAITDISK-6422249
  • published12 Mar 2024
  • disclosed11 Mar 2024

Introduced: 11 Mar 2024

CVE-2023-46839  (opens in a new tab)

How to fix?

Upgrade SLES:15.5 xen-tools-xendomains-wait-disk to version 4.17.3_06-150500.3.24.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream xen-tools-xendomains-wait-disk package and not the xen-tools-xendomains-wait-disk package as distributed by SLES. See How to fix? for SLES:15.5 relevant fixed versions and status.

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 Scores

version 3.1