CVE-2022-26358
First published: Tue Apr 05 2022(Updated: )
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.
Credit: security@xen.org security@xen.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/xen | <=4.11.4+107-gef32c7afa2-1 | 4.14.6-1 4.14.5+94-ge49571868d-1 4.17.1+2-gb773c48e36-1 4.17.2+55-g0b56bed864-1 |
| Xen Xen | ||
| Debian Debian Linux | =11.0 | |
| Fedoraproject Fedora | =34 | |
| Fedoraproject Fedora | =35 |
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Reference Links
- https://xenbits.xen.org/xsa/advisory-400.html
- https://security-tracker.debian.org/tracker/CVE-2022-26358
- http://www.openwall.com/lists/oss-security/2022/04/05/3
- http://xenbits.xen.org/xsa/advisory-400.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/
- https://www.debian.org/security/2022/dsa-5117
- https://xenbits.xenproject.org/xsa/advisory-400.txt
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UHFSRVLM2JUCPDC2KGB7ETPQYJLCGBLD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/
- https://security.gentoo.org/glsa/202402-07
Frequently Asked Questions
What is CVE-2022-26358?
CVE-2022-26358 refers to the IOMMU: RMRR (VT-d) and unity map (AMD-Vi) handling issues.
What is the severity of CVE-2022-26358?
CVE-2022-26358 has a severity of 7.8 (High).
Which software is affected by CVE-2022-26358?
The affected software includes Xen Xen, Debian Debian Linux 11.0, Fedoraproject Fedora 34, and Fedoraproject Fedora 35.
How can I fix CVE-2022-26358?
To fix CVE-2022-26358, ensure that you update Xen Xen to version 4.14.6-1, 4.14.5+94-ge49571868d-1, 4.17.1+2-gb773c48e36-1, or 4.17.2+55-g0b56bed864-1.
Where can I find more information about CVE-2022-26358?
You can find more information about CVE-2022-26358 at the following references: [http://www.openwall.com/lists/oss-security/2022/04/05/3](http://www.openwall.com/lists/oss-security/2022/04/05/3), [http://xenbits.xen.org/xsa/advisory-400.html](http://xenbits.xen.org/xsa/advisory-400.html), [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6ETPM2OVZZ6KOS2L7QO7SIW6XWT5OW3F/).
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