Answer in brief
CVE-2026-90240 records a High severity (CVSS 8.8) vulnerability in iommu/vt-d: Flush context cache with correct SID when tearing down aliases. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f90584f4beb84211c4d21b319cc13f391fe9f3c2 <a803141597d61dc0511f7cd849625e17d042ca8a || >=f90584f4beb84211c4d21b319cc13f391fe9f3c2 <5baddf100b3be730912485648cbaae5e3a251923 || >=f90584f4beb84211c4d21b319cc13f391fe9f3c2 <c54e4ae971b98e8d650400137d332cee56c03f55 | a803141597d61dc0511f7cd849625e17d042ca8a, 5baddf100b3be730912485648cbaae5e3a251923, c54e4ae971b98e8d650400137d332cee56c03f55 |
| Linux/Linuxgeneric | 6.11 | Not reported |
| Linux/Linuxgeneric | >=f90584f4beb84211c4d21b319cc13f391fe9f3c2 <3eb6ad14ef359e426cff14942e220de101cdbe84 || >=f90584f4beb84211c4d21b319cc13f391fe9f3c2 <a803141597d61dc0511f7cd849625e17d042ca8a || >=f90584f4beb84211c4d21b319cc13f391fe9f3c2 <5baddf100b3be730912485648cbaae5e3a251923 || >=f90584f4beb84211c4d21b319cc13f391fe9f3c2 <c54e4ae971b98e8d650400137d332cee56c03f55 | 3eb6ad14ef359e426cff14942e220de101cdbe84, a803141597d61dc0511f7cd849625e17d042ca8a, 5baddf100b3be730912485648cbaae5e3a251923, c54e4ae971b98e8d650400137d332cee56c03f55 |
Published upstream
Sep 17, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 17, 2026
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Flush context cache with correct SID when tearing down aliases domain_context_clear_one() and device_pasid_table_teardown() are both invoked once per DMA alias of a device. Each function locates the context entry using the bus/devfn pair provided by the pci_for_each_dma_alias() callback, then calls intel_context_flush_no_pasid(), which constructs a device-selective context-cache invalidation from info->bus and info->devfn (that is, always the requester ID of the device itself). As a result, for every alias other than the device’s own RID, the context entry that was just cleared in memory is never invalidated in the context cache. Hardware may continue using that stale cached entry. In the scalable-mode teardown path, intel_pasid_free_table() can then free the PASID directory still referenced by that stale entry, allowing the IOMMU to walk freed memory. Fix this by passing the source ID of the entry being torn down to intel_context_flush_no_pasid(), instead of deriving it from @info.
Quoted source text, attributed separately from HOL analysis.