{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/viommu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "294b464b2be7e57872864cb6936e1d9c7294f89d",
              "status": "affected",
              "version": "ed42eee797ff3dc889ade63c1dd7c4f430699e23",
              "versionType": "git"
            },
            {
              "lessThan": "ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86",
              "status": "affected",
              "version": "ed42eee797ff3dc889ade63c1dd7c4f430699e23",
              "versionType": "git"
            },
            {
              "lessThan": "339bd11591593ab7ce88136ab7fd01ef3813b724",
              "status": "affected",
              "version": "ed42eee797ff3dc889ade63c1dd7c4f430699e23",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/iommu/iommufd/viommu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "lessThan": "6.17",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.44",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.44",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.8",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2",
                  "versionStartIncluding": "6.17",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd/viommu: Release the igroup lock on the vdevice_size error path\n\niommufd_vdevice_alloc_ioctl() takes idev-\u003eigroup-\u003elock, then validates the\ndriver\u0027s vdevice_size against the core structure size with a WARN_ON_ONCE.\nOn failure that guard jumps to out_put_idev, below out_unlock_igroup, so it\nskips the mutex_unlock(), leaving the igroup lock held and deadlocking the\nnext vDEVICE operation on that group.\n\nJump to out_unlock_igroup instead."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-28T06:52:52.512Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/294b464b2be7e57872864cb6936e1d9c7294f89d"
        },
        {
          "url": "https://git.kernel.org/stable/c/ca9e49e1c8931a4e6e743a1f1d2e7f977f774b86"
        },
        {
          "url": "https://git.kernel.org/stable/c/339bd11591593ab7ce88136ab7fd01ef3813b724"
        }
      ],
      "title": "iommufd/viommu: Release the igroup lock on the vdevice_size error path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80687",
    "datePublished": "2026-08-28T06:52:52.512Z",
    "dateReserved": "2026-08-26T14:34:25.784Z",
    "dateUpdated": "2026-08-28T06:52:52.512Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}