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CVE-2026-98251

Estado: RecibidaSin puntuar—

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

openvswitch: avoid reallocating confirmed conntrack labels

ovs_ct_get_conn_labels() adds the labels extension when a conntrack entry does not have one. Confirmed conntracks can be read locklessly, so adding an extension may reallocate and free the extension block while another CPU accesses it.

Only add the extension for unconfirmed conntracks. A confirmed conntrack without labels now fails the caller's label operation instead of reallocating its extension storage.

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-2026-98251",
  "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": "c2ac667358708d7cce64c78f58af6adf4c1e848b",
              "lessThan": "4371d79ea74407fb992c985b1f94391e35bb8289",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c2ac667358708d7cce64c78f58af6adf4c1e848b",
              "lessThan": "7ff688aceada1160331a789385ea146f62fbddf7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c2ac667358708d7cce64c78f58af6adf4c1e848b",
              "lessThan": "05eab8dced6bf4d3009a6eeee16ddac99047dc83",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "c2ac667358708d7cce64c78f58af6adf4c1e848b",
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              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "2e6dd889c325abf23821e1459c3ffef59b7f0009",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "d16f089bd700f45d720ce989d5495e1dc3be0cf8",
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              "lessThan": "3f118c8217c109fd13ca61caa301d72c483897ef",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/openvswitch/conntrack.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.3"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.3",
              "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": "6.12.112",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.8",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc4",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/openvswitch/conntrack.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T09:18:13.567",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/05eab8dced6bf4d3009a6eeee16ddac99047dc83",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2e6dd889c325abf23821e1459c3ffef59b7f0009",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3f118c8217c109fd13ca61caa301d72c483897ef",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4371d79ea74407fb992c985b1f94391e35bb8289",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/579d87ec1e1e85729a6cb2c25961e58beb78640c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7ff688aceada1160331a789385ea146f62fbddf7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8c9fcc6c33950d3db551af664d1fd3d998bfee56",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d16f089bd700f45d720ce989d5495e1dc3be0cf8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nopenvswitch: avoid reallocating confirmed conntrack labels\n\novs_ct_get_conn_labels() adds the labels extension when a conntrack\nentry does not have one.  Confirmed conntracks can be read locklessly,\nso adding an extension may reallocate and free the extension block\nwhile another CPU accesses it.\n\nOnly add the extension for unconfirmed conntracks.  A confirmed\nconntrack without labels now fails the caller's label operation instead\nof reallocating its extension storage."
    }
  ],
  "lastModified": "2026-10-06T09:18:13.567",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}