Read the docs
TI-2022-09735 Aliases CVE-2022-26361GHSA-c3mw-fh2q-7xx4

IOMMU: RMRR (VT-d) and unity map (AMD-Vi) handling issues T[his CNA information record…

Priority LOW 34Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

IOMMU: RMRR (VT-d) and unity map (AMD-Vi) handling issues T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Certain PCI devices in a system might be assigned Reserved Memory Regions (specified via Reserved Memory Region Reporting, "RMRR") for Intel VT-d or Unity Mapping ranges for AMD-Vi. These are typically used for platform tasks such as legacy USB emulation. Since the precise purpose of these regions is unknown, once a device associated with such a region is active, the mappings of these regions need to remain continuouly accessible by the device. This requirement has been violated. Subsequent DMA or interrupts from the device may have unpredictable behaviour, ranging from IOMMU faults to memory corruption.

Why it matters now

EPSS 0.00355 29th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Xenxen——No fix listedCNA
  • xen VendorXen Affected — Fixed in — No fix listed CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:xen:xen:-:*:*:*:*:*:x86:*not specified by NVDVulnerableXen
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*9.0VulnerableDebian
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*34VulnerableFedoraproject
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*35VulnerableFedoraproject
  • cpe:2.3:o:xen:xen:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Xen
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Debian
  • cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* Versions 34 Vulnerable ·Fedoraproject
  • cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* Versions 35 Vulnerable ·Fedoraproject

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    xen — FEDORA-2022-64b2c02d29

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2022-09734 IOMMU: RMRR (VT-d) and unity map (AMD-Vi) handling issues T[his CNA information record…Priority LOW 34
    • TI-2022-09733 IOMMU: RMRR (VT-d) and unity map (AMD-Vi) handling issues T[his CNA information record…Priority LOW 34
    • TI-2022-09732 IOMMU: RMRR (VT-d) and unity map (AMD-Vi) handling issues T[his CNA information record…Priority LOW 34
    Show all 6 records → Advisory →
  • Advisory ·

    xen — FEDORA-2022-dfbf7e2372

    6 records Highest priority Priority LOW 6 LOW

    Other records, highest priority first

    • TI-2022-09734 IOMMU: RMRR (VT-d) and unity map (AMD-Vi) handling issues T[his CNA information record…Priority LOW 34
    • TI-2022-09733 IOMMU: RMRR (VT-d) and unity map (AMD-Vi) handling issues T[his CNA information record…Priority LOW 34
    • TI-2022-09732 IOMMU: RMRR (VT-d) and unity map (AMD-Vi) handling issues T[his CNA information record…Priority LOW 34
    Show all 6 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-26361
  2. 2026-10-03 Alias added: GHSA-c3mw-fh2q-7xx4

References

Patch 2

Advisory 5

  • TI-2012-00210 The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix… CVSS 2.0HIGH 7.2
  • TI-2023-07042 Information disclosure through error messages in AMD Ryzen™ 3000 Series Desktop… CVSS 3.1MEDIUM 5.5
  • TI-2015-04333 The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used… CVSS 2.0HIGH 9.3
  • TI-2015-06741 The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows… CVSS 3.1CRITICAL 10.0
  • TI-2018-06436 A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures… CVSS 3.0HIGH 7.8
  • TI-2024-20522 x86: Incorrect logic for BTC/SRSO mitigations CVSS 3.1HIGH 7.5
See all 489 →

Sources

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