The physdev_get_free_pirq hypercall in arch/x86/physdev.c in Xen 4.1.x and Citrix XenServer 6.0.2 and earlier uses the return value of the get_free_pirq function as an array index without checking that the return value indicates an error, which allows guest OS users to cause a denial of service (invalid memory write and host crash) and possibly gain privileges via unspecified vectors.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade xen | Jul 30, 2024 | Nov 23, 2012 |
| Gentoo Linux | — | Upgrade app-emulation/xen.Upgrade app-emulation/xen-pvgrub.Upgrade app-emulation/pvgrub.Upgrade app-emulation/xen-tools. | Oct 30, 2017 | Nov 23, 2012 |
| Suse | — | Upgrade xen-kmp-defaultUpgrade xen-develUpgrade xen-doc-htmlUpgrade xen-kmp-traceUpgrade xenUpgrade xen-tools-domUUpgrade vm-installUpgrade xen-doc-pdfUpgrade xen-libs-32bitUpgrade xen-kmp-paeUpgrade xen-libsUpgrade xen-tools | Feb 17, 2015 | Jun 28, 2013 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Nov 23, 2012 |
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