« Volver al listado

CVE-2026-97568

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

mptcp: syncookies: remember the request backup flag

Instead of using an uninitialised bit when copying the info in subflow_ulp_clone().

To fix this, no need to extend the join_entry structure: backup is coming from struct mptcp_subflow_request_sock, only one bit. Do the same here by using one bit for both.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-97568",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "1008f2bcbc8e461c1df3aebba30ac4f616ebe570",
              "lessThan": "c97fa2c7ada82d4cac1c6c00643238dc4c462f15",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f01f41b6a492ddf2da7609967cfaf57e7ca48a7",
              "lessThan": "1668b34452009d27be3262646de748a3e48ffd51",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "09176f80995105c62939728fbad5c437d61e7ff4",
              "lessThan": "b138e7dc719f0a3949de8bb6500b8cf1604eea06",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "8ed3e34c766e8264d5d2e0436f86c51604d6a8a7",
              "lessThan": "360d99258a6402cb8e49771460944f19f04d25b7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "efd340bf3d7779a3a8ec954d8ec0fb8a10f24982",
              "lessThan": "61178d0b85b4b1b53e78b06e89d018d22d102f88",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "efd340bf3d7779a3a8ec954d8ec0fb8a10f24982",
              "lessThan": "00b2bd518911e0daab00f4749cce68c191ccebb4",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "efd340bf3d7779a3a8ec954d8ec0fb8a10f24982",
              "lessThan": "06d649f9cd03a9f8e768a658b20acf8d2c8022e0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "efd340bf3d7779a3a8ec954d8ec0fb8a10f24982",
              "lessThan": "b76c0e28b392620dfbaf92cdeedbf115820b44cb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "73e2baa301ee3f62ff971e68877adeb37f98cc67",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5.10.224",
              "lessThan": "5.10.271",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.15.165",
              "lessThan": "5.15.222",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.1.104",
              "lessThan": "6.1.189",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.6.45",
              "lessThan": "6.6.158",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "6.10.4",
              "lessThan": "6.11",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "net/mptcp/syncookies.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.11"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.11",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.111",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.53",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.7",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/mptcp/syncookies.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-25T11:17:07.453",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/00b2bd518911e0daab00f4749cce68c191ccebb4",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/06d649f9cd03a9f8e768a658b20acf8d2c8022e0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1668b34452009d27be3262646de748a3e48ffd51",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/360d99258a6402cb8e49771460944f19f04d25b7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/61178d0b85b4b1b53e78b06e89d018d22d102f88",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b138e7dc719f0a3949de8bb6500b8cf1604eea06",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b76c0e28b392620dfbaf92cdeedbf115820b44cb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c97fa2c7ada82d4cac1c6c00643238dc4c462f15",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nmptcp: syncookies: remember the request backup flag\n\nInstead of using an uninitialised bit when copying the info in\nsubflow_ulp_clone().\n\nTo fix this, no need to extend the join_entry structure: backup is\ncoming from struct mptcp_subflow_request_sock, only one bit. Do the same\nhere by using one bit for both."
    }
  ],
  "lastModified": "2026-10-03T11:18:04.190",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}