iommu/vt-d: Clear Present bit before tearing down context entry
CVE-2026-45944 is a vulnerability related to the iommu/vt-d component where the Present bit is not cleared before tearing down a context entry. The provided information does not include detailed technical specifics or exploitation details. There is no CVSS score available, and no known exploits in the wild have been reported. The vulnerability affects Microsoft products including Azure Linux 3. 0. No patch or remediation information is provided, and the vendor advisory does not specify any mitigation steps or fixes.
AI Analysis
Technical Summary
This vulnerability involves the iommu/vt-d implementation in Microsoft products, specifically a failure to clear the Present bit before tearing down a context entry. The lack of clearing this bit could potentially lead to improper handling of memory or device context states. However, no further technical details, exploitation methods, or impact scenarios are provided in the available data.
Potential Impact
The impact of this vulnerability is not explicitly described in the provided information. Without detailed technical or vendor advisory data, the exact consequences on system security or stability cannot be determined. There are no known exploits in the wild, suggesting limited or no active exploitation at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or mitigation recommendations are provided in the available data. Users should monitor Microsoft Security Response Center advisories for updates regarding this vulnerability.
iommu/vt-d: Clear Present bit before tearing down context entry
Description
CVE-2026-45944 is a vulnerability related to the iommu/vt-d component where the Present bit is not cleared before tearing down a context entry. The provided information does not include detailed technical specifics or exploitation details. There is no CVSS score available, and no known exploits in the wild have been reported. The vulnerability affects Microsoft products including Azure Linux 3. 0. No patch or remediation information is provided, and the vendor advisory does not specify any mitigation steps or fixes.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves the iommu/vt-d implementation in Microsoft products, specifically a failure to clear the Present bit before tearing down a context entry. The lack of clearing this bit could potentially lead to improper handling of memory or device context states. However, no further technical details, exploitation methods, or impact scenarios are provided in the available data.
Potential Impact
The impact of this vulnerability is not explicitly described in the provided information. Without detailed technical or vendor advisory data, the exact consequences on system security or stability cannot be determined. There are no known exploits in the wild, suggesting limited or no active exploitation at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or mitigation recommendations are provided in the available data. Users should monitor Microsoft Security Response Center advisories for updates regarding this vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_vex
- Csaf Version
- 2.0
- Publisher
- Microsoft Security Response Center
- Advisory Id
- msrc_CVE-2026-45944
- Cve Count
- 1
- Additional Cves
- []
- Cvss Version
- null
Threat ID: 6a18ab8ee29bf47b50289603
Added to database: 5/28/2026, 8:54:38 PM
Last enriched: 5/28/2026, 9:11:39 PM
Last updated: 5/29/2026, 4:54:01 AM
Views: 2
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