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CVE-2026-43130 (GCVE-0-2026-43130)

Vulnerability from cvelistv5 – Published: 2026-05-06 11:27 – Updated: 2026-05-23 16:06
VLAI
Title
iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode
Summary
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.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: f873b85ec762c5a6abe94a7ddb31df5d3ba07d85 , < 581ce094d9eafb78ec4f9de77bd24b780c151236 (git)
Affected: d70f1c85113cd8c2aa8373f491ca5d1b22ec0554 , < e2c78c69f8faf2885ea4ceee08c71ac738f401a0 (git)
Affected: 34a7b30f56d30114bf4d436e4dc793afe326fbcf , < ead67d0378e90f419e385a43af29435242d80c12 (git)
Affected: 2b74b2a92e524d7c8dec8e02e95ecf18b667c062 , < 01aed2f1d7cb8fdf4c60c5bb4727608cb82b401d (git)
Affected: 4fc82cd907ac075648789cc3a00877778aa1838b , < 9813306610d0d718c863aaa70928bf57d7570ec0 (git)
Affected: 4fc82cd907ac075648789cc3a00877778aa1838b , < 9deaacc8dcaddb6ddc5b52e1e63b457450ec0f94 (git)
Affected: 4fc82cd907ac075648789cc3a00877778aa1838b , < 0da6697e577023d8867c7beb2d16a22510e4eea9 (git)
Affected: 4fc82cd907ac075648789cc3a00877778aa1838b , < 10e60d87813989e20eac1f3eda30b3bae461e7f9 (git)
Affected: c04f2780919f20e2cc4846764221f5e802555868 (git)
Affected: 025bc6b41e020aeb1e71f84ae3ffce945026de05 (git)
Affected: 5.10.214 , < 5.10.252 (semver)
Affected: 5.15.153 , < 5.15.202 (semver)
Affected: 6.1.83 , < 6.1.165 (semver)
Affected: 6.6.23 , < 6.6.128 (semver)
Affected: 6.7.11 , < 6.8 (semver)
Affected: 6.8.2 , < 6.9 (semver)
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Linux Linux Affected: 6.9
Unaffected: 0 , < 6.9 (semver)
Unaffected: 5.10.252 , ≤ 5.10.* (semver)
Unaffected: 5.15.202 , ≤ 5.15.* (semver)
Unaffected: 6.1.165 , ≤ 6.1.* (semver)
Unaffected: 6.6.128 , ≤ 6.6.* (semver)
Unaffected: 6.12.75 , ≤ 6.12.* (semver)
Unaffected: 6.18.16 , ≤ 6.18.* (semver)
Unaffected: 6.19.6 , ≤ 6.19.* (semver)
Unaffected: 7.0 , ≤ * (original_commit_for_fix)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode\n\nCommit 4fc82cd907ac (\"iommu/vt-d: Don\u0027t issue ATS Invalidation\nrequest when device is disconnected\") relies on\npci_dev_is_disconnected() to skip ATS invalidation for\nsafely-removed devices, but it does not cover link-down caused\nby faults, which can still hard-lock the system.\n\nFor example, if a VM fails to connect to the PCIe device,\n\"virsh destroy\" is executed to release resources and isolate\nthe fault, but a hard-lockup occurs while releasing the group fd.\n\nCall Trace:\n qi_submit_sync\n qi_flush_dev_iotlb\n intel_pasid_tear_down_entry\n device_block_translation\n blocking_domain_attach_dev\n __iommu_attach_device\n __iommu_device_set_domain\n __iommu_group_set_domain_internal\n iommu_detach_group\n vfio_iommu_type1_detach_group\n vfio_group_detach_container\n vfio_group_fops_release\n __fput\n\nAlthough pci_device_is_present() is slower than\npci_dev_is_disconnected(), it still takes only ~70 \u00b5s on a\nConnectX-5 (8 GT/s, x2) and becomes even faster as PCIe speed\nand width increase.\n\nBesides, devtlb_invalidation_with_pasid() is called only in the\npaths below, which are far less frequent than memory map/unmap.\n\n1. mm-struct release\n2. {attach,release}_dev\n3. set/remove PASID\n4. dirty-tracking setup\n\nThe gain in system stability far outweighs the negligible cost\nof using pci_device_is_present() instead of pci_dev_is_disconnected()\nto decide when to skip ATS invalidation, especially under GDR\nhigh-load conditions."
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      "title": "iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2026-43130\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-05-06T12:16:30.083\",\"lastModified\":\"2026-06-17T10:48:59.490\",\"vulnStatus\":\"Analyzed\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\niommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode\\n\\nCommit 4fc82cd907ac (\\\"iommu/vt-d: Don\u0027t issue ATS Invalidation\\nrequest when device is disconnected\\\") relies on\\npci_dev_is_disconnected() to skip ATS invalidation for\\nsafely-removed devices, but it does not cover link-down caused\\nby faults, which can still hard-lock the system.\\n\\nFor example, if a VM fails to connect to the PCIe device,\\n\\\"virsh destroy\\\" is executed to release resources and isolate\\nthe fault, but a hard-lockup occurs while releasing the group fd.\\n\\nCall Trace:\\n qi_submit_sync\\n qi_flush_dev_iotlb\\n intel_pasid_tear_down_entry\\n device_block_translation\\n blocking_domain_attach_dev\\n __iommu_attach_device\\n __iommu_device_set_domain\\n __iommu_group_set_domain_internal\\n iommu_detach_group\\n vfio_iommu_type1_detach_group\\n vfio_group_detach_container\\n vfio_group_fops_release\\n __fput\\n\\nAlthough pci_device_is_present() is slower than\\npci_dev_is_disconnected(), it still takes only ~70 \u00b5s on a\\nConnectX-5 (8 GT/s, x2) and becomes even faster as PCIe speed\\nand width increase.\\n\\nBesides, devtlb_invalidation_with_pasid() is called only in the\\npaths below, which are far less frequent than memory map/unmap.\\n\\n1. mm-struct release\\n2. {attach,release}_dev\\n3. set/remove PASID\\n4. dirty-tracking setup\\n\\nThe gain in system stability far outweighs the negligible cost\\nof using pci_device_is_present() instead of pci_dev_is_disconnected()\\nto decide when to skip ATS invalidation, especially under GDR\\nhigh-load conditions.\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/iommu/intel/pasid.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"f873b85ec762c5a6abe94a7ddb31df5d3ba07d85\",\"lessThan\":\"581ce094d9eafb78ec4f9de77bd24b780c151236\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"d70f1c85113cd8c2aa8373f491ca5d1b22ec0554\",\"lessThan\":\"e2c78c69f8faf2885ea4ceee08c71ac738f401a0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"34a7b30f56d30114bf4d436e4dc793afe326fbcf\",\"lessThan\":\"ead67d0378e90f419e385a43af29435242d80c12\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"2b74b2a92e524d7c8dec8e02e95ecf18b667c062\",\"lessThan\":\"01aed2f1d7cb8fdf4c60c5bb4727608cb82b401d\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4fc82cd907ac075648789cc3a00877778aa1838b\",\"lessThan\":\"9813306610d0d718c863aaa70928bf57d7570ec0\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4fc82cd907ac075648789cc3a00877778aa1838b\",\"lessThan\":\"9deaacc8dcaddb6ddc5b52e1e63b457450ec0f94\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4fc82cd907ac075648789cc3a00877778aa1838b\",\"lessThan\":\"0da6697e577023d8867c7beb2d16a22510e4eea9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"4fc82cd907ac075648789cc3a00877778aa1838b\",\"lessThan\":\"10e60d87813989e20eac1f3eda30b3bae461e7f9\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"c04f2780919f20e2cc4846764221f5e802555868\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"025bc6b41e020aeb1e71f84ae3ffce945026de05\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"5.10.214\",\"lessThan\":\"5.10.252\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"5.15.153\",\"lessThan\":\"5.15.202\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.1.83\",\"lessThan\":\"6.1.165\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.6.23\",\"lessThan\":\"6.6.128\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.7.11\",\"lessThan\":\"6.8\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"6.8.2\",\"lessThan\":\"6.9\",\"versionType\":\"semver\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/iommu/intel/pasid.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.9\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.9\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.10.252\",\"lessThanOrEqual\":\"5.10.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"5.15.202\",\"lessThanOrEqual\":\"5.15.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.1.165\",\"lessThanOrEqual\":\"6.1.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.6.128\",\"lessThanOrEqual\":\"6.6.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.12.75\",\"lessThanOrEqual\":\"6.12.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.18.16\",\"lessThanOrEqual\":\"6.18.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.19.6\",\"lessThanOrEqual\":\"6.19.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"7.0\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.10.214\",\"versionEndExcluding\":\"5.10.252\",\"matchCriteriaId\":\"F301F41A-824C-4760-91D6-829EA98625CE\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.15.153\",\"versionEndExcluding\":\"5.15.202\",\"matchCriteriaId\":\"117A1A1F-F0DE-44E4-B126-9D004FA22B98\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.1.83\",\"versionEndExcluding\":\"6.1.165\",\"matchCriteriaId\":\"ED05E435-2E50-4978-9EB7-7CD836BB7F33\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.6.23\",\"versionEndExcluding\":\"6.6.128\",\"matchCriteriaId\":\"700B618A-E90E-4922-BA41-8FCAD15AC28F\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.7.11\",\"versionEndExcluding\":\"6.8\",\"matchCriteriaId\":\"CD8383BB-B294-4F4D-996D-A780685E6362\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.8.2\",\"versionEndExcluding\":\"6.12.75\",\"matchCriteriaId\":\"2596BDC4-B8B0-4DD1-B529-FDCF124D0E31\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.13\",\"versionEndExcluding\":\"6.18.16\",\"matchCriteriaId\":\"B4B8CDA9-BADF-4CF5-8B3B-702DE8EEA40B\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"6.19\",\"versionEndExcluding\":\"6.19.6\",\"matchCriteriaId\":\"373EEEDA-FAA1-4FB4-B6ED-DB4DD99DBE67\"}]}]}],\"references\":[{\"url\":\"https://git.kernel.org/stable/c/01aed2f1d7cb8fdf4c60c5bb4727608cb82b401d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/0da6697e577023d8867c7beb2d16a22510e4eea9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/10e60d87813989e20eac1f3eda30b3bae461e7f9\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/581ce094d9eafb78ec4f9de77bd24b780c151236\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9813306610d0d718c863aaa70928bf57d7570ec0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/9deaacc8dcaddb6ddc5b52e1e63b457450ec0f94\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/e2c78c69f8faf2885ea4ceee08c71ac738f401a0\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]},{\"url\":\"https://git.kernel.org/stable/c/ead67d0378e90f419e385a43af29435242d80c12\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"tags\":[\"Patch\"]}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T07:35:30+00:00",
      "cve": "CVE-2026-43130",
      "id": "CVE-2026-43130",
      "initial_release_date": "2026-05-06T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: iommu/vt-d: Flush dev-IOTLB only when PCIe device is accessible in scalable mode",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43130.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-05-09T02:42:21Z",
      "cve": "CVE-2026-43130",
      "id": "CVE-2026-43130",
      "initial_release_date": "2026-05-09T02:42:21Z",
      "product_status:known_affected": "139",
      "product_status:known_not_affected": "87",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-43130",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-43130.json",
      "version": "2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.