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Vulnerability Details : CVE-2022-26361

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.
Publish Date : 2022-04-05 Last Update Date : 2022-06-16
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- CVSS Scores & Vulnerability Types

CVSS Score
4.4
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Memory corruption
CWE ID CWE id is not defined for this vulnerability

- Products Affected By CVE-2022-26361

# Product Type Vendor Product Version Update Edition Language
1 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
2 OS Fedoraproject Fedora 34 * * * Version Details Vulnerabilities
3 OS Fedoraproject Fedora 35 * * * Version Details Vulnerabilities
4 OS XEN XEN - * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Debian Debian Linux 1
Fedoraproject Fedora 2
XEN XEN 1

- References For CVE-2022-26361

http://www.openwall.com/lists/oss-security/2022/04/05/3
MLIST [oss-security] 20220405 Xen Security Advisory 400 v2 (CVE-2022-26358,CVE-2022-26359,CVE-2022-26360,CVE-2022-26361) - IOMMU: RMRR (VT-d) and unity map (AMD-Vi) handling issues
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/
FEDORA FEDORA-2022-dfbf7e2372
https://www.debian.org/security/2022/dsa-5117
DEBIAN DSA-5117
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/
FEDORA FEDORA-2022-64b2c02d29
https://xenbits.xenproject.org/xsa/advisory-400.txt
http://xenbits.xen.org/xsa/advisory-400.html CONFIRM

- Metasploit Modules Related To CVE-2022-26361

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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