CVE-2026-45862
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 0.13% probability · 3th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-362
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS 0.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.