Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.4.237, < 5.5 |
References
- https://git.kernel.org/stable/c/0616137b70e6d9a547d4b60df8e1b64e36d83661Patch
- https://git.kernel.org/stable/c/22d169bdd2849fe6bd18c2643742e1c02be6451cPatch
- https://git.kernel.org/stable/c/36244dfd3853f7bf89d03b8e90d56b23ce7fbc16Patch
- https://git.kernel.org/stable/c/36990407cdd257473607e33802d00e978af2759ePatch
- https://git.kernel.org/stable/c/5962c30a6f05ea1ab73f039e235bb30716243517Patch
- https://git.kernel.org/stable/c/c93f23375d8c410954b0df825e814b632fd62b9dPatch
- https://git.kernel.org/stable/c/cd75e77125c8a51754ca4cd60b4ca083ed735d1dPatch
- https://git.kernel.org/stable/c/d15cda135148ea7ba929cfdbcf208182bc29a7aaPatch
FAQ
What is CVE-2026-45862?
CVE-2026-45862 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 tab...
How severe is CVE-2026-45862?
CVE-2026-45862 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-45862?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.