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CVE-2026-98341

Estado: RecibidaSin puntuar—

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

wifi: cfg80211: don't free driver-owned scan requests

When an interface goes down while a scan is running, cfg80211 completes the scan towards userspace and frees the scan request. However, the driver can be convinced that it owns the request, since the cancellation is (intended to be) asynchronous.

The WARN_ON() in the netdev notifier was meant to catch this, but it's not actually avoidable, so it triggers and we get a UAF in scan_done().

There doesn't seem to be a great way around it, so just track that the driver is still convinced it owns the request, and then just free it on completion if it was already cancelled. Also remove the warnings since they can trigger in the intended architecture.

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-2026-98341",
  "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": "4a58e7c38443154fce1b47910e1a9184f65c5d72",
              "lessThan": "e8c75736cfd0c6c87562cda2312e3fe5e2227955",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a58e7c38443154fce1b47910e1a9184f65c5d72",
              "lessThan": "cf6da29d17994865f73ca70976495ea856909c63",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4a58e7c38443154fce1b47910e1a9184f65c5d72",
              "lessThan": "dab68a74e90b8e07f08ed9deaa5884857a3cfe89",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/wireless/core.c",
            "net/wireless/core.h",
            "net/wireless/rdev-ops.h",
            "net/wireless/scan.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.14"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.14",
              "versionType": "semver"
            },
            {
              "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/wireless/core.c",
            "net/wireless/core.h",
            "net/wireless/rdev-ops.h",
            "net/wireless/scan.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T09:18:26.873",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/cf6da29d17994865f73ca70976495ea856909c63",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dab68a74e90b8e07f08ed9deaa5884857a3cfe89",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e8c75736cfd0c6c87562cda2312e3fe5e2227955",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: cfg80211: don't free driver-owned scan requests\n\nWhen an interface goes down while a scan is running, cfg80211 completes\nthe scan towards userspace and frees the scan request. However, the\ndriver can be convinced that it owns the request, since the cancellation\nis (intended to be) asynchronous.\n\nThe WARN_ON() in the netdev notifier was meant to catch this, but it's\nnot actually avoidable, so it triggers and we get a UAF in scan_done().\n\nThere doesn't seem to be a great way around it, so just track that the\ndriver is still convinced it owns the request, and then just free it on\ncompletion if it was already cancelled. Also remove the warnings since\nthey can trigger in the intended architecture."
    }
  ],
  "lastModified": "2026-10-06T09:18:26.873",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}