CVE-2024-31145: high-severity vulnerability in Xen
error handling in x86 IOMMU identity mapping
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.2%
Certain PCI devices in a system might be assigned Reserved Memory
Regions (specified via Reserved Memory Region Reporting, "RMRR") for
Intel VT-d or Unity Mapping ranges for AMD-Vi. These are typically used
for platform tasks such as legacy USB emulation.
Since the precise purpose of these regions is unknown, once a device
associated with such a region is active, the mappings of these regions
need to remain continuouly accessible by the device. In the logic
establishing these mappings, error handling was flawed, resulting in
such mappings to potentially remain in place when they should have been
removed again. Respective guests would then gain access to memory
regions which they aren't supposed to have access to.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
Xen · XenRelated CVEs — Xen
In the same product, most dangerous first.
CVE-2024-31142HIGHx86: Incorrect logic for BTC/SRSO mitigationsEPSS 17.4%CVE-2024-2201MEDIUMCVE-2024-2201EPSS 8.8%CVE-2023-46842MEDIUMx86 HVM hypercalls may trigger Xen bug checkEPSS 8.5%CVE-2024-2193MEDIUMSpeculative Race Condition impacts modern CPU architectures that support speculative execution, also known as GhostRace.EPSS 1.3%CVE-2025-1713HIGHdeadlock potential with VT-d and legacy PCI device pass-throughEPSS 0.9%CVE-2023-46839MEDIUMpci: phantom functions assigned to incorrect contextsEPSS 0.8%