What’s Vulnerable › Vulnerabilities

CVE-2026-79602: x86: improper handling of HVM emulation return codes

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-08 · updated 2026-09-10
• Weakness: CWE-119

Description

A guest with a PCI device assigned that has at least a BAR on the IO port space can trigger a BUG() in Xen.

References

• https://xenbits.xenproject.org/xsa/advisory-510.html
• http://www.openwall.com/lists/oss-security/2026/09/08/7
• http://xenbits.xen.org/xsa/advisory-510.html

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