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        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
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        "full_product_name": {
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          "product_id": "Debian-10:linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64"
        },
        "product_reference": "linux-headers-4.19.0-28-amd64-0:4.19.325-1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10",
          "product_id": "Debian-10:hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64"
        },
        "product_reference": "hyperv-daemons-0:4.19.325-1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64 as a component of Debian 10",
          "product_id": "Debian-10:linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64"
        },
        "product_reference": "linux-image-4.19.0-28-amd64-unsigned-0:4.19.325-1+tuxcare.els1.amd64",
        "relates_to_product_reference": "Debian-10"
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    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-68381",
      "notes": [
        {
          "category": "description",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: pin conn during async oplock break notification\n\nsmb2_oplock_break_noti() and smb2_lease_break_noti() store a ksmbd_conn\npointer in an async ksmbd_work and then queue that work on ksmbd-io.  The\nwork only increments conn->r_count, which prevents teardown from passing\nthe pending-request wait after the increment, but it does not pin the\nstruct ksmbd_conn object.\n\nIf connection teardown races with an oplock break notification, the last\nconn reference can be dropped before the queued worker finishes.  The\nworker then uses the freed conn in ksmbd_conn_write() and\nksmbd_conn_r_count_dec().\n\nTake a real conn reference when publishing the conn pointer to the async\nwork item, and drop it after the notification work has decremented\nr_count.  Apply the same lifetime rule to lease break notification, which\nuses the same work->conn pattern.",
          "title": "Vulnerability description"
        },
        {
          "category": "other",
          "text": "TuxCare has assessed that this vulnerability does not impact any currently supported TuxCare products. This evaluation may change as new information becomes available. For additional details regarding this vulnerability and affected products, refer to the provided references.",
          "title": "Statement"
        }
      ],
      "product_status": {
        "known_not_affected": [
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          "Debian-10:linux-headers-4.19.0-28-all-amd64-0:4.19.325-1+tuxcare.els1.amd64",
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          "Debian-10:linux-support-4.19.0-28-0:4.19.325-1+tuxcare.els1.all"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-68381"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/0f72fc9659d7f585460d43c158055df5afdcffb6",
          "url": "https://git.kernel.org/stable/c/0f72fc9659d7f585460d43c158055df5afdcffb6"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/14062c74e5b25c27edcff7a2fe0dc701c930b372",
          "url": "https://git.kernel.org/stable/c/14062c74e5b25c27edcff7a2fe0dc701c930b372"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/6ecb252efa0b413ac3d9979fb4eec247f8fc1258",
          "url": "https://git.kernel.org/stable/c/6ecb252efa0b413ac3d9979fb4eec247f8fc1258"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/793e1c7041b93af96ff87e678329bc16aee7ba88",
          "url": "https://git.kernel.org/stable/c/793e1c7041b93af96ff87e678329bc16aee7ba88"
        },
        {
          "category": "external",
          "summary": "https://git.kernel.org/stable/c/aa5d8f3f96aa11a4a54ce993c11ce8af11c546f9",
          "url": "https://git.kernel.org/stable/c/aa5d8f3f96aa11a4a54ce993c11ce8af11c546f9"
        }
      ],
      "release_date": "2026-08-10T13:20:00Z",
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        },
        {
          "category": "impact",
          "date": "2026-08-22T12:54:13.745578Z",
          "details": "debian10els is not affected by CVE-2026-68381. The flaw is a use-after-free in the in-kernel SMB server (ksmbd), where a queued async oplock/lease break notification could use a struct ksmbd_conn freed by a racing connection teardown. The ksmbd server module was introduced upstream in v5.15 and is not present in this kernel, so the vulnerable code was never introduced.",
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}