TI-2022-02736 Aliases CVE-2022-2962 GHSA-wmwv-5vwp-c54w

Uncontrolled resource consumption in QEMU

HIGH 69CWE-400Published 2022-09-13 · Updated 2025-04-23

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-400.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00407 35th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	QEMU	Will be fixed in QEMU 7.2.0-rc0	—	No fix listed	CNA

QEMU Vendor— Affected Will be fixed in QEMU 7.2.0-rc0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:qemu:qemu::::::::	4.2.0 – 7.1.0	Vulnerable	QEMU

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* Versions 4.2.0 – 7.1.0 Vulnerable ·QEMU

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

Not affected: 6 products

Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 8 Advanced Virtualization
Red Hat Enterprise Linux 9
Red Hat OpenStack Platform 13 (Queens)

Timeline

2026-10-02 Threatist record created from CVE-2022-2962
2026-10-03 Alias added: GHSA-wmwv-5vwp-c54w

References

Exploit 1

https://gitlab.com/qemu-project/qemu/-/issues/1171

Patch 1

https://gitlab.com/qemu-project/qemu/-/commit/36a894aeb64a2e02871016da1c37d4a4ca109182

TI-2024-16148 QEMU before 8.2.0 has an integer underflow, and resultant buffer overflow, via a TI… CVSS 3.1HIGH 8.8
TI-2023-02681 Qemu: 9pfs: improper access control on special files CVSS 3.1HIGH 7.1
TI-2019-09678 The QMP migrate command in QEMU version 4.0.0 and earlier is vulnerable to OS command… CVSS 3.0CRITICAL 9.8
TI-2024-03326 Qemu-kvm: net: assertion failure in update_sctp_checksum() CVSS 3.1MEDIUM 5.5
TI-2023-22631 QEMU through 8.0.0 could trigger a division by zero in scsi_disk_reset in… CVSS 3.1MEDIUM 5.5
TI-2015-07039 Local privilege escalation vulnerability in the Gentoo QEMU package before 2.5.0-r1. CVSS 3.0CRITICAL 10.0

See all 418 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences