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CVE-2026-98235

Estado: RecibidaSin puntuar—

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

net/sched: act_api: release tail references on DELACTION failure

A batched RTM_DELACTION request takes a temporary reference on each action before attempting any deletion. tcf_action_delete() clears each processed slot and drops its temporary reference before attempting the deletion. If deletion fails, tca_action_gd() calls tcf_action_put_many() to release the remaining references, but its tcf_act_for_each_action() iterator stops at the first NULL slot.

When a batch stops at an action bound to a filter, this leaks a reference on each subsequent action. A later delete of an unbound action can then return success without removing it from the IDR.

Leer descripción completaMostrar menos

Walk the full array in tcf_action_put_many() and skip NULL slots to release the references held on the unprocessed actions.

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)

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{
  "id": "CVE-2026-98235",
  "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": "a0e947c9ccffe47d45aca793d9e7fe4f4494e381",
              "lessThan": "9eaba16f1b6ee19b249e6afd82c27f958d441458",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a0e947c9ccffe47d45aca793d9e7fe4f4494e381",
              "lessThan": "1be63e4579af408d596f0f3165faf1a880631d3b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a0e947c9ccffe47d45aca793d9e7fe4f4494e381",
              "lessThan": "57b477e46ef2df3483f3488cc713c61c4b384aab",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "a0e947c9ccffe47d45aca793d9e7fe4f4494e381",
              "lessThan": "6e05e46fa821a5c1b281355f1f622ac76cb6080a",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/sched/act_api.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.8"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.8",
              "versionType": "semver"
            },
            {
              "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/sched/act_api.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T09:18:11.203",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1be63e4579af408d596f0f3165faf1a880631d3b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/57b477e46ef2df3483f3488cc713c61c4b384aab",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6e05e46fa821a5c1b281355f1f622ac76cb6080a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9eaba16f1b6ee19b249e6afd82c27f958d441458",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_api: release tail references on DELACTION failure\n\nA batched RTM_DELACTION request takes a temporary reference on each\naction before attempting any deletion. tcf_action_delete() clears\neach processed slot and drops its temporary reference before attempting\nthe deletion. If deletion fails, tca_action_gd() calls\ntcf_action_put_many() to release the remaining references, but its\ntcf_act_for_each_action() iterator stops at the first NULL slot.\n\nWhen a batch stops at an action bound to a filter, this leaks a\nreference on each subsequent action. A later delete of an unbound\naction can then return success without removing it from the IDR.\n\nWalk the full array in tcf_action_put_many() and skip NULL slots to\nrelease the references held on the unprocessed actions."
    }
  ],
  "lastModified": "2026-10-06T09:18:11.203",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}