Vulnerability details
CVE-2026-45862
Linux Linux
iommu/vt-d: Flush cache for PASID table before using it
CVSS 3.1
7.8High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.8High | 3.1 | CVEProject cvelistV5 (CNA) (Linux) | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Linux | Linux | 1b48c70feefc499b62670521efa002ab01e05df5 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.3 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | bc348a6cc8f92e9979fbfbb3c6b48fd51b4b1dbf | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 194b3348bdbb7db65375c72f3f774aee4cc6614e ≤ v < c93f23375d8c410954b0df825e814b632fd62b9d | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 194b3348bdbb7db65375c72f3f774aee4cc6614e ≤ v < 5962c30a6f05ea1ab73f039e235bb30716243517 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 194b3348bdbb7db65375c72f3f774aee4cc6614e ≤ v < 36244dfd3853f7bf89d03b8e90d56b23ce7fbc16 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 194b3348bdbb7db65375c72f3f774aee4cc6614e ≤ v < d15cda135148ea7ba929cfdbcf208182bc29a7aa | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 194b3348bdbb7db65375c72f3f774aee4cc6614e ≤ v < 22d169bdd2849fe6bd18c2643742e1c02be6451c | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 2bed9455db7cc0ab7ece6b3d846472097b52855a ≤ v < 36990407cdd257473607e33802d00e978af2759e | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 5.10.175 ≤ v < 5.10.252 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 5.15.103 ≤ v < 5.15.202 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 5.4.237 ≤ v < 5.5 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 5c65f097124770c3e5b9b83ed1a8b68c119bc7b5 ≤ v < 0616137b70e6d9a547d4b60df8e1b64e36d83661 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.1.16 ≤ v < 6.1.165 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 6.2.3 ≤ v < 6.3 | CVEProject cvelistV5 (CNA) |
| Linux | Linux | 7e00b52c8cdd9d3a985d63d72ecae7bde6314883 ≤ v < cd75e77125c8a51754ca4cd60b4ca083ed735d1d | CVEProject cvelistV5 (CNA) |
References and advisories
8- https://git.kernel.org/stable/c/cd75e77125c8a51754ca4cd60b4ca083ed735d1d
- https://git.kernel.org/stable/c/0616137b70e6d9a547d4b60df8e1b64e36d83661
- https://git.kernel.org/stable/c/36990407cdd257473607e33802d00e978af2759e
- https://git.kernel.org/stable/c/c93f23375d8c410954b0df825e814b632fd62b9d
- https://git.kernel.org/stable/c/5962c30a6f05ea1ab73f039e235bb30716243517
- https://git.kernel.org/stable/c/36244dfd3853f7bf89d03b8e90d56b23ce7fbc16
- https://git.kernel.org/stable/c/d15cda135148ea7ba929cfdbcf208182bc29a7aa
- https://git.kernel.org/stable/c/22d169bdd2849fe6bd18c2643742e1c02be6451c
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Details
- Published
- 2026-05-27
- Last updated
- 2026-10-19
- State
- Published
- Assigner (CNA)
- Linux
Exploit prediction (EPSS)
0.13%
Probability of exploitation in 30 days
2.7%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')