How severe is CVE-2022-2962?

CVE-2022-2962 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-2962 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-2962?

CVE-2022-2962 affects Qemu. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-2962?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-2962 published?

CVE-2022-2962 was published on 2022-09-13 and last updated on 2026-06-17.

CVE-2022-2962

CVE-2022-2962 is a high-severity vulnerability in Qemu with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-662.

Key facts

Severity: High (CVSS 3.x base score 7.8)
EPSS exploit prediction: 0% (33rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-662
Affected product: Qemu
Published: 2022-09-13
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2022-2962?: 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.
How severe is CVE-2022-2962?: CVE-2022-2962 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-2962 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (33rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-2962?: CVE-2022-2962 affects Qemu. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-2962?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-2962 published?: CVE-2022-2962 was published on 2022-09-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

More vulnerabilities in Qemu

CVE-2022-36648 — Critical (CVSS 10.0): The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier,…
CVE-2017-16845 — Critical (CVSS 10.0): hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-of-bounds…
CVE-2015-8556 — Critical (CVSS 10.0): Local privilege escalation vulnerability in the Gentoo QEMU package before 2.5.0-r1.
CVE-2009-3616 — Critical (CVSS 9.9): Multiple use-after-free vulnerabilities in vnc.c in the VNC server in QEMU 0.10.6 and earlier might allow guest OS…
CVE-2019-12929 — Critical (CVSS 9.8): The QMP guest_exec command in QEMU 4.0.0 and earlier is prone to OS command injection, which allows the attacker to…
CVE-2019-12928 — Critical (CVSS 9.8): The QMP migrate command in QEMU version 4.0.0 and earlier is vulnerable to OS command injection, which allows the…

All CVEs affecting Qemu →

Other CWE-662 vulnerabilities

CVE-2018-15555 — Critical (CVSS 9.8): On Telus Actiontec WEB6000Q v1.1.02.22 devices, an attacker can login with root level access with the user "root" and…
CVE-2024-32644 — Critical (CVSS 9.1): Evmos is a scalable, high-throughput Proof-of-Stake EVM blockchain that is fully compatible and interoperable with…
CVE-2026-53277 — High (CVSS 8.8): In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Take the SRCU lock for page table…
CVE-2022-23005 — High (CVSS 8.7): Western Digital has identified a weakness in the UFS standard that could result in a security vulnerability. This…
CVE-2016-8368 — High (CVSS 8.6): An issue was discovered in Mitsubishi Electric Automation MELSEC-Q series Ethernet interface modules QJ71E71-100, all…
CVE-2022-1931 — High (CVSS 8.1): Incorrect Synchronization in GitHub repository polonel/trudesk prior to 1.2.3.

Browse all CWE-662 vulnerabilities →