CVE-2022-2962

2022-09-1319:18:14

CWE-400

redhat

www.cve.org

cve-2022-2962

qemu

tulip device

dma reentrancy

mmio address

stack overflow

heap overflow

denial of service

7.6 High

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.8%

JSON

A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the rx/tx descriptor or copies the rx/tx frame, it doesn’t check whether the destination address is its own MMIO address. This can cause the device to trigger MMIO handlers multiple times, possibly leading to a stack or heap overflow. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.

CNA Affected

[
  {
    "product": "QEMU",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Will be fixed in QEMU 7.2.0-rc0"
      }
    ]
  }
]