CVE-2026-45862
Last modified
CVE-2026-45862 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Flush cache for PASID table before using it When writing the address of a freshly allocated zero-initialized PASID table to a PASID directory entry, do that after the CPU cache flush for this PASID table, not before it, to avoid the time window when this PASID table may be already used by non-coherent IOMMU hardware while its contents in RAM is still some random old data, not zero-initialized.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.
Description
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Flush cache for PASID table before using it When writing the address of a freshly allocated zero-initialized PASID table to a PASID directory entry, do that after the CPU cache flush for this PASID table, not before it, to avoid the time window when this PASID table may be already used by non-coherent IOMMU hardware while its contents in RAM is still some random old data, not zero-initialized.
Metrics
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.4.237, < 5.5 |
| Linux | Linux Kernel | >= 5.10.175, < 5.10.252 |
| Linux | Linux Kernel | >= 5.15.103, < 5.15.202 |
| Linux | Linux Kernel | >= 6.1.16, < 6.1.165 |
| Linux | Linux Kernel | >= 6.2.3, < 6.6.128 |
| Linux | Linux Kernel | >= 6.7, < 6.12.75 |
| Linux | Linux Kernel | >= 6.13, < 6.18.14 |
| Linux | Linux Kernel | >= 6.19, < 6.19.4 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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Scan your code nowSource: NVD / NIST