CVE-2024-31143 double unlock in x86 guest IRQ handling

2024-07-1813:31:31

XEN

www.cve.org

pci msi

multiple message

interrupt vectors

error path

EPSS

Percentile

9.3%

JSON

An optional feature of PCI MSI called “Multiple Message” allows a
device to use multiple consecutive interrupt vectors. Unlike for MSI-X,
the setting up of these consecutive vectors needs to happen all in one
go. In this handling an error path could be taken in different
situations, with or without a particular lock held. This error path
wrongly releases the lock even when it is not currently held.

CNA Affected

[
  {
    "defaultStatus": "unknown",
    "product": "Xen",
    "vendor": "Xen",
    "versions": [
      {
        "status": "unknown",
        "version": "consult Xen advisory XSA-458"
      }
    ]
  }
]

References

xenbits.xenproject.org/xsa/advisory-458.html

EPSS

Percentile

9.3%

JSON

Related for CVELIST:CVE-2024-31143