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Off-by-one error in the flask_security_avc_cachestats function in xsm/flask/flask_op.c in Xen 4.2.x and 4.3.x, when the maximum number of physical CPUs are in use, allows local users to cause a denial of service (host crash) or obtain sensitive information from hypervisor memory by leveraging a FLASK_AVC_CACHESTAT hypercall, which triggers a buffer over-read.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade xen | Jul 30, 2024 | Apr 1, 2014 |
| Gentoo Linux | — | Upgrade app-emulations/xen-pvgrub.Upgrade app-emulations/xen.Upgrade app-emulations/xen-tools. | Oct 30, 2017 | Apr 1, 2014 |
| Suse | — | Upgrade xen-doc-pdfUpgrade xen-libs-32bitUpgrade xen-tools-domUUpgrade xen-develUpgrade xen-kmp-defaultUpgrade xen-libsUpgrade xen-doc-htmlUpgrade xen-kmp-paeUpgrade xen-toolsUpgrade xen | Dec 18, 2015 | Mar 14, 2014 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Apr 1, 2014 |
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