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vfio/fsl-mc: Block calling interrupt handler without trigger

Type: advisorySources: OSV

In the Linux kernel, the following vulnerability has been resolved: vfio/fsl-mc: Block calling interrupt handler without trigger The eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is initially NULL and may become NULL if the user sets the trigger eventfd to -1. The interrupt handler itself is guaranteed that trigger is always valid between request_irq() and free_irq(), but the loopback testing mechanisms to invoke the handler function need to test the trigger. The triggering and setting ioctl paths both make use of igate and are therefore mutually exclusive. The vfio-fsl-mc driver does not make use of irqfds, nor does it support any sort of masking operations, therefore unlike vfio-pci and vfio-platform, the flow can remain essentially unchanged.

Products
Kernel
Affected versions
Not specified
Fixed versions
5.10.215, 5.15.154, 6.1.84, 6.6.24, 6.7.12, 6.8.3
CVEs
CVE-2024-26814
Confirmed fixed CVEs
Not specified
Updated in this feed
5 Nov 2026, 10:39 UTC · Revision 1

Source evidence

vfio/fsl-mc: Block calling interrupt handler without trigger

core-osv · Original source

Published 5 Apr 2024, 08:24 UTC

In the Linux kernel, the following vulnerability has been resolved: vfio/fsl-mc: Block calling interrupt handler without trigger The eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is initially NULL and may become NULL if the user sets the trigger eventfd to -1. The interrupt handler itself is guaranteed that trigger is always valid between request_irq() and free_irq(), but the loopback testing mechanisms to invoke the handler function need to test the trigger. The triggering and setting ioctl paths both make use of igate and are therefore mutually exclusive. The vfio-fsl-mc driver does not make use of irqfds, nor does it support any sort of masking operations, therefore unlike vfio-pci and vfio-platform, the flow can remain essentially unchanged.

osv:CVE-2024-26814

Kernel

Fixed versions: 5.10.215, 5.15.154, 6.1.84, 6.6.24, 6.7.12, 6.8.3

Complete source record
{
  "id": "f5f26d710876db0bb1dde2a177cb8ad12f8b5fa3e87bef83c8f824f214946476",
  "url": "https://osv.dev/vulnerability/CVE-2024-26814",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "vfio/fsl-mc: Block calling interrupt handler without trigger",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: vfio/fsl-mc: Block calling interrupt handler without trigger The eventfd_ctx trigger pointer of the vfio_fsl_mc_irq object is initially NULL and may become NULL if the user sets the trigger eventfd to -1. The interrupt handler itself is guaranteed that trigger is always valid between request_irq() and free_irq(), but the loopback testing mechanisms to invoke the handler function need to test the trigger. The triggering and setting ioctl paths both make use of igate and are therefore mutually exclusive. The vfio-fsl-mc driver does not make use of irqfds, nor does it support any sort of masking operations, therefore unlike vfio-pci and vfio-platform, the flow can remain essentially unchanged.",
    "evidence": "osv:CVE-2024-26814",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.215",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.154",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.84",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.6.24",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.7.12",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.8.3",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2024-26814",
      "aliases": [
        "CVE-2024-26814"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
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                  "fixed": "a563fc18583ca4f42e2fdd0c70c7c618288e7ede"
                },
                {
                  "fixed": "250219c6a556f8c69c5910fca05a59037e24147d"
                },
                {
                  "fixed": "083e750c9f5f4c3bf61161330fb84d7c8e8bb417"
                },
                {
                  "fixed": "ee0bd4ad780dfbb60355b99f25063357ab488267"
                },
                {
                  "fixed": "de87511fb0404d23b6da5f4660383b6ed095e28d"
                },
                {
                  "fixed": "6ec0d88166dac43f29e96801c0927d514f17add9"
                },
                {
                  "fixed": "7447d911af699a15f8d050dfcb7c680a86f87012"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26814.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
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                  "introduced": "5.10.0"
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            {
              "type": "ECOSYSTEM",
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                  "introduced": "5.11.0"
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            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.84"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.6.24"
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              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.7.0"
                },
                {
                  "fixed": "6.7.12"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.8.0"
                },
                {
                  "fixed": "6.8.3"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26814.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:44.121185055Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/083e750c9f5f4c3bf61161330fb84d7c8e8bb417",
        "https://git.kernel.org/stable/c/250219c6a556f8c69c5910fca05a59037e24147d",
        "https://git.kernel.org/stable/c/6ec0d88166dac43f29e96801c0927d514f17add9",
        "https://git.kernel.org/stable/c/7447d911af699a15f8d050dfcb7c680a86f87012",
        "https://git.kernel.org/stable/c/a563fc18583ca4f42e2fdd0c70c7c618288e7ede",
        "https://git.kernel.org/stable/c/de87511fb0404d23b6da5f4660383b6ed095e28d",
        "https://git.kernel.org/stable/c/ee0bd4ad780dfbb60355b99f25063357ab488267",
        "https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26814.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2024-26814",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/26xxx/CVE-2024-26814.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2024-26814",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 511650,
  "published_at": "2024-04-05T08:24:43.916+00:00"
}