VULNERABILITY INTELLIGENCE

CVE-2022-2962

CVSS score7.8 HIGH

EPSS probability0.40%

CISA KEVNot currently listed

Published2022-09-13

Last modified2026-06-17

CVSS vectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

CWE-400: Uncontrolled Resource Consumption
CWE-662: Improper Synchronization

Primary references

secalert@redhat.com — Patch, Third Party Advisory
secalert@redhat.com — Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Third Party Advisory