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.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2023-46839)

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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. (CVE-2023-46839)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote host is affected by the vulnerability described in GLSA-202409-10 (Xen: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in Xen. Please review the CVE identifiers referenced below     for details.

Tenable has extracted the preceding description block directly from the Gentoo Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:0830-1 advisory.

    - CVE-2023-46839: Fixed memory access through PCI device with phantom functions (XSA-449) (bsc#1218851).
    - CVE-2023-46840: Fixed Failure to quarantine devices in !HVM builds (XSA-450) (bsc#1219080).
    - CVE-2023-46841: Fixed shadow stack vs exceptions from emulation stubs (XSA-451) (bsc#1219885).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 38 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-4b2cf8c375 advisory.

    arm32: The cache may not be properly cleaned/invalidated (take two)     [XSA-447, CVE-2023-46837]     pci: phantom functions assigned to incorrect contexts [XSA-449,     CVE-2023-46839]     VT-d: Failure to quarantine devices in !HVM build [XSA-450,     CVE-2023-46840]

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 39 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2024-e527e6fd08 advisory.

    arm32: The cache may not be properly cleaned/invalidated (take two)     [XSA-447, CVE-2023-46837]     pci: phantom functions assigned to incorrect contexts [XSA-449,     CVE-2023-46839]     VT-d: Failure to quarantine devices in !HVM build [XSA-450,     CVE-2023-46840]

Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2024:0265-1 advisory.

    - CVE-2023-46839: Fixed phantom functions assigned to incorrect contexts (XSA-449) (bsc#1218851)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2024:0264-1 advisory.

    - CVE-2023-46839: Fixed phantom functions assigned to incorrect contexts (XSA-449) (bsc#1218851)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:0266-1 advisory.

    - CVE-2023-46839: Fixed phantom functions assigned to incorrect contexts (XSA-449) (bsc#1218851)
    - CVE-2023-46840: Fixed VT-d: Failure to quarantine devices in !HVM builds (XSA-450) (bsc#1219080)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2024:0268-1 advisory.

    - CVE-2023-46839: Fixed phantom functions assigned to incorrect contexts (XSA-449) (bsc#1218851)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2024:0270-1 advisory.

    - CVE-2023-46839: Fixed phantom functions assigned to incorrect contexts (XSA-449) (bsc#1218851)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2024:0269-1 advisory.

    - CVE-2023-46839: Fixed phantom functions assigned to incorrect contexts (XSA-449) (bsc#1218851)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
424740	Alpine: multiple xen packages: security update to 4.18.0-r3	Tenable Cloud Security	Alpine Linux Local Security Checks	medium
424740	Alpine: multiple xen packages: security update to 4.18.0-r3	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	medium
226954	Linux Distros Unpatched Vulnerability : CVE-2023-46839	Nessus	Misc.	medium
207559	GLSA-202409-10 : Xen: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	high
191896	SUSE SLED15: xen / xen-devel / xen-doc-html / xen-libs / xen-libs-32bit / etc (SUSE-SU-2024:0830-1)	Nessus	SuSE Local Security Checks	medium
190571	Fedora 38 : xen (2024-4b2cf8c375)	Nessus	Fedora Local Security Checks	low
190566	Fedora 39 : xen (2024-e527e6fd08)	Nessus	Fedora Local Security Checks	low
408268	Alpine: xen: security update to 4.16.5-r6	Tenable Cloud Security	Alpine Linux Local Security Checks	medium
408268	Alpine: xen: security update to 4.16.5-r6	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	medium
408267	Alpine: xen: security update to 4.17.3-r0	Tenable Cloud Security	Alpine Linux Local Security Checks	medium
408267	Alpine: xen: security update to 4.17.3-r0	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	medium
408265	Alpine: xen: security update to 4.18.0-r3	Tenable Cloud Security	Alpine Linux Local Security Checks	medium
408265	Alpine: xen: security update to 4.18.0-r3	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	medium
189886	SUSE SLES12: xen / xen-devel / xen-doc-html / xen-libs / xen-libs-32bit / etc (SUSE-SU-2024:0265-1)	Nessus	SuSE Local Security Checks	medium
189884	SUSE SLES15: xen / xen-devel / xen-libs / xen-tools / xen-tools-domU / etc (SUSE-SU-2024:0264-1)	Nessus	SuSE Local Security Checks	medium
189835	SUSE SLED15: xen / xen-devel / xen-doc-html / xen-libs / xen-libs-32bit / etc (SUSE-SU-2024:0266-1)	Nessus	SuSE Local Security Checks	medium
189834	SUSE SLED15: xen / xen-devel / xen-libs / xen-tools / xen-tools-domU / etc (SUSE-SU-2024:0268-1)	Nessus	SuSE Local Security Checks	medium
189833	SUSE SLES15: xen / xen-devel / xen-libs / xen-tools / xen-tools-domU / etc (SUSE-SU-2024:0270-1)	Nessus	SuSE Local Security Checks	medium
189832	SUSE SLES15 Security Update : xen (SUSE-SU-2024:0269-1)	Nessus	SuSE Local Security Checks	medium

Detections

Analytics

CVE-2023-46839

medium

Tenable Plugins

medium

medium

medium

high

medium

low

low

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium

medium