The compat_iret function in Xen 3.1 through 4.5 iterates the wrong way through a loop, which allows local 32-bit PV guest administrators to cause a denial of service (large loop and system hang) via a hypercall_iret call with EFLAGS.VM set.
CVSS Details
- CVSS 3.1 Base Score: 7.1
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade xen | Jul 30, 2024 | Jun 15, 2015 |
| Freebsd | — | Upgrade xen-kernel | Dec 10, 2025 | Jul 11, 2015 |
| Gentoo Linux | — | Upgrade app-emulation/xen-tools.Upgrade app-emulation/xen-pvgrub.Upgrade app-emulation/pvgrub.Upgrade app-emulation/xen. | Oct 30, 2017 | Jun 15, 2015 |
| Redhat_linux | — | No solution exists | Jul 9, 2025 | Jun 11, 2015 |
| Suse | — | Upgrade xen-libsUpgrade xen-kmp-defaultUpgrade xen-libs-32bitUpgrade xen-toolsUpgrade xen-kmp-paeUpgrade xen-doc-pdfUpgrade xen-doc-htmlUpgrade xen-develUpgrade xenUpgrade xen-tools-domUUpgrade xen-kmp-trace | Dec 18, 2015 | Jun 11, 2015 |
| Ubuntu | — | Upgrade xen | Nov 19, 2024 | Jun 15, 2015 |
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