CVE-2026-43130None▾ SunlitIn 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 …
▾ Sunlit zone — Low / medium · no exploitation signal
impact 2.8 · likelihood 0 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Nov 6.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CVEORG
Last analysed / modified upstream
0.1%
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.
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.
Linux >= f873b85ec762c5a6abe94a7ddb31df5d3ba07d85 < 581ce094d9eafb78ec4f9de77bd24b780c151236Linux >= d70f1c85113cd8c2aa8373f491ca5d1b22ec0554 < e2c78c69f8faf2885ea4ceee08c71ac738f401a0Linux >= 34a7b30f56d30114bf4d436e4dc793afe326fbcf < ead67d0378e90f419e385a43af29435242d80c12Linux >= 2b74b2a92e524d7c8dec8e02e95ecf18b667c062 < 01aed2f1d7cb8fdf4c60c5bb4727608cb82b401dLinux >= 4fc82cd907ac075648789cc3a00877778aa1838b < 9813306610d0d718c863aaa70928bf57d7570ec0Linux >= 4fc82cd907ac075648789cc3a00877778aa1838b < 9deaacc8dcaddb6ddc5b52e1e63b457450ec0f94Linux >= 4fc82cd907ac075648789cc3a00877778aa1838b < 0da6697e577023d8867c7beb2d16a22510e4eea9Linux >= 4fc82cd907ac075648789cc3a00877778aa1838b < 10e60d87813989e20eac1f3eda30b3bae461e7f9Linux c04f2780919f20e2cc4846764221f5e802555868Linux 025bc6b41e020aeb1e71f84ae3ffce945026de05Linux >= 5.10.214 < 5.10.252Linux >= 5.15.153 < 5.15.202Linux >= 6.1.83 < 6.1.165Linux >= 6.6.23 < 6.6.128Linux >= 6.7.11 < 6.8Linux >= 6.8.2 < 6.9Linux 6.9Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Connected by shared product, vendor, weakness, or advisory.
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