The x86_emulate function in arch/x86/x86_emulate/x86_emulate.c in Xen 4.4.x and earlier does not properly check supervisor mode permissions, which allows local HVM users to cause a denial of service (guest crash) or gain guest kernel mode privileges via vectors involving an (1) HLT, (2) LGDT, (3) LIDT, or (4) LMSW instruction.
CVSS Details
- CVSS 3.1 Base Score: 5.5
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade xen | Aug 30, 2017 | Oct 2, 2014 |
| Debian | — | Upgrade xen | Jul 30, 2024 | Oct 2, 2014 |
| Gentoo Linux | — | Upgrade app-emulation/xen. | Oct 30, 2017 | Oct 2, 2014 |
| Suse | — | Upgrade xen-kmp-defaultUpgrade xen-doc-pdfUpgrade xen-libs-32bitUpgrade xen-libsUpgrade xen-toolsUpgrade xen-kmp-paeUpgrade xen-kmp-traceUpgrade xenUpgrade xen-tools-domUUpgrade xen-doc-htmlUpgrade xen-devel | Dec 18, 2015 | Oct 2, 2014 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Oct 2, 2014 |
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