CVE-2022-42331

2023-03-2100:00:00

XEN

www.cve.org

x86

vulnerability

speculation safety

ret instruction

speculative attack

AI Score

6.9

Confidence

High

EPSS

0.001

Percentile

17.9%

JSON

x86: speculative vulnerability in 32bit SYSCALL path Due to an oversight in the very original Spectre/Meltdown security work (XSA-254), one entrypath performs its speculation-safety actions too late. In some configurations, there is an unprotected RET instruction which can be attacked with a variety of speculative attacks.

CNA Affected

[
  {
    "vendor": "Xen",
    "product": "xen",
    "versions": [
      {
        "version": "consult Xen advisory XSA-429",
        "status": "unknown"
      }
    ]
  }
]