CVE-2022-35414

Guest-triggered crash via uninitialized IOMMU translation

Published Jul 11, 2022 · Updated Aug 3, 2024

Uninitialized memory use in QEMU 7.0.0 and earlier allows guest OS users to crash the QEMU process via an unmapped IOMMU page. The translate_fail branch of address_space_translate_for_iotlb leaves xlat unset, so iotlb_to_section consumes garbage and io_readx or io_writex can terminate the process. The path requires TCG-based emulation, which QEMU places outside its supported security boundary; the demonstrated consequence is limited to a process crash.

CVSS severity6.0
Medium
EPSS probability0.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uninitialized memory use in QEMU 7.0.0 and earlier allows guest OS users to crash the QEMU process via an unmapped IOMMU page. The translate_fail branch of address_space_translate_for_iotlb leaves xlat unset, so iotlb_to_section consumes garbage and io_readx or io_writex can terminate the process. The path requires TCG-based emulation, which QEMU places outside its supported security boundary; the demonstrated consequence is limited to a process crash.

The record

CVE
CVE-2022-35414
Published
Jul 11, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1489
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
6.1NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:C
6.0SUSECVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1489Service Stop

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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