Arm provides multiple helpers to clean & invalidate the cache for a given region. This is, for instance, used when allocating guest memory to ensure any writes (such as the ones during scrubbing) have reached memory before handing over the page to a guest. Unfortunately, the arithmetics in the helpers can overflow and would then result to skip the cache cleaning/invalidation. Therefore there is no guarantee when all the writes will reach the memory. This undefined behavior was meant to be addressed by XSA-437, but the approach was not sufficient.

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

  - Arm provides multiple helpers to clean & invalidate the cache for a given region. This is, for instance,
    used when allocating guest memory to ensure any writes (such as the ones during scrubbing) have reached
    memory before handing over the page to a guest. Unfortunately, the arithmetics in the helpers can overflow
    and would then result to skip the cache cleaning/invalidation. Therefore there is no guarantee when all
    the writes will reach the memory. This undefined behavior was meant to be addressed by XSA-437, but the
    approach was not sufficient. (CVE-2023-46837)

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

  - Arm provides multiple helpers to clean & invalidate the cache for a given region. This is, for instance,     used when allocating guest memory to ensure any writes (such as the ones during scrubbing) have reached     memory before handing over the page to a guest. Unfortunately, the arithmetics in the helpers can overflow     and would then result to skip the cache cleaning/invalidation. Therefore there is no guarantee when all     the writes will reach the memory. This undefined behavior was meant to be addressed by XSA-437, but the     approach was not sufficient. (CVE-2023-46837)

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 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.

ID	Name	Product	Family	Type	Severity
424722	Alpine: multiple xen packages: security update to 4.18.0-r2	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	low
424722	Alpine: multiple xen packages: security update to 4.18.0-r2	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	low
226816	Linux Distros Unpatched Vulnerability : CVE-2023-46837	Nessus	Misc.	Local	low
207559	GLSA-202409-10 : Xen: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	Local	high
190571	Fedora 38 : xen (2024-4b2cf8c375)	Nessus	Fedora Local Security Checks	Local	low
190566	Fedora 39 : xen (2024-e527e6fd08)	Nessus	Fedora Local Security Checks	Local	low
408177	Alpine: xen: security update to 4.18.0-r2	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	low
408177	Alpine: xen: security update to 4.18.0-r2	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	low
408173	Alpine: xen: security update to 4.17.2-r5	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	low
408173	Alpine: xen: security update to 4.17.2-r5	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	low
408172	Alpine: xen: security update to 4.16.5-r5	Tenable Cloud Security	Alpine Linux Local Security Checks	Local	low
408172	Alpine: xen: security update to 4.16.5-r5	Tenable Self-Hosted Container Security	Alpine Linux Local Security Checks	Local	low

Detections

Analytics

CVE-2023-46837

low

Tenable Plugins

low

low

low

high

low

low

low

low

low

low

low

low