Answer in brief
CVE-2026-43130 records a Unknown severity vulnerability in iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode. The current sources do not mark it as known exploited. The current feed maps 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.
A CVSS score is not reported in the current record. 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). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=f873b85ec762c5a6abe94a7ddb31df5d3ba07d85 <581ce094d9eafb78ec4f9de77bd24b780c151236 || >=d70f1c85113cd8c2aa8373f491ca5d1b22ec0554 <e2c78c69f8faf2885ea4ceee08c71ac738f401a0 || >=34a7b30f56d30114bf4d436e4dc793afe326fbcf <ead67d0378e90f419e385a43af29435242d80c12 || >=2b74b2a92e524d7c8dec8e02e95ecf18b667c062 <01aed2f1d7cb8fdf4c60c5bb4727608cb82b401d || >=4fc82cd907ac075648789cc3a00877778aa1838b <9813306610d0d718c863aaa70928bf57d7570ec0 || >=4fc82cd907ac075648789cc3a00877778aa1838b <9deaacc8dcaddb6ddc5b52e1e63b457450ec0f94 || >=4fc82cd907ac075648789cc3a00877778aa1838b <0da6697e577023d8867c7beb2d16a22510e4eea9 || >=4fc82cd907ac075648789cc3a00877778aa1838b <10e60d87813989e20eac1f3eda30b3bae461e7f9 || c04f2780919f20e2cc4846764221f5e802555868 || 025bc6b41e020aeb1e71f84ae3ffce945026de05 || >=5.10.214 <5.10.252 || >=5.15.153 <5.15.202 || >=6.1.83 <6.1.165 || >=6.6.23 <6.6.128 || >=6.7.11 <6.8 || >=6.8.2 <6.9 | 581ce094d9eafb78ec4f9de77bd24b780c151236, e2c78c69f8faf2885ea4ceee08c71ac738f401a0, ead67d0378e90f419e385a43af29435242d80c12, 01aed2f1d7cb8fdf4c60c5bb4727608cb82b401d, 9813306610d0d718c863aaa70928bf57d7570ec0, 9deaacc8dcaddb6ddc5b52e1e63b457450ec0f94, 0da6697e577023d8867c7beb2d16a22510e4eea9, 10e60d87813989e20eac1f3eda30b3bae461e7f9, 5.10.252, 5.15.202, 6.1.165, 6.6.128, 6.8, 6.9 |
| Linux/Linuxgeneric | 6.9 | Not reported |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 6, 2026
In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode Commit 4fc82cd907ac ("iommu/vt-d: Don't issue ATS Invalidation request when device is disconnected") relies on pci_dev_is_disconnected() to skip ATS invalidation for safely-removed devices, but it does not cover link-down caused by faults, which can still hard-lock the system. For example, if a VM fails to connect to the PCIe device, "virsh destroy" is executed to release resources and isolate the fault, but a hard-lockup occurs while releasing the group fd. Call Trace: qi_submit_sync qi_flush_dev_iotlb intel_pasid_tear_down_entry device_block_translation blocking_domain_attach_dev __iommu_attach_device __iommu_device_set_domain __iommu_group_set_domain_internal iommu_detach_group vfio_iommu_type1_detach_group vfio_group_detach_container vfio_group_fops_release __fput Although pci_device_is_present() is slower than pci_dev_is_disconnected(), it still takes only ~70 µs on a ConnectX-5 (8 GT/s, x2) and becomes even faster as PCIe speed and width increase. Besides, devtlb_invalidation_with_pasid() is called only in the paths below, which are far less frequent than memory map/unmap. 1. mm-struct release 2. {attach,release}_dev 3. set/remove PASID 4. dirty-tracking setup The gain in system stability far outweighs the negligible cost of using pci_device_is_present() instead of pci_dev_is_disconnected() to decide when to skip ATS invalidation, especially under GDR high-load conditions.
Quoted source text, attributed separately from HOL analysis.