CVE-2026-98422

Estado: RecibidaSin puntuar—

Gravedad—Sin puntuar

Probabilidad de explotación0.22 %mayor que el 12 % de las CVE

Explotación activaNono figura en el catálogo de CISA

Exploit públicoNo conocidosin código público localizado

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad:

wifi: mac80211: restablecer el contador de tailroom de AP_VLAN al desactivar la interfaz

Al activar la interfaz, las interfaces AP_VLAN obtienen crypto_tx_tailroom_needed_cnt de la interfaz AP, pero este nunca se vuelve a decrementar salvo que también se desactive el AP. Por tanto, al volver a activar la misma AP_VLAN se incrementa de nuevo el contador y, finalmente, se alcanza la comprobación de coherencia:

Restablecerlo al desactivar la interfaz para evitarlo.

Detalles técnicos trazas, registros y código del informe original

  WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt !=
               master->crypto_tx_tailroom_needed_cnt);

Traducción automática del texto original de NVD (en inglés).

CVSS

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

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.22 %
Percentil entre todas las CVEs puntuadas: 12
Fecha de la puntuación: 21/10/2026

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 Kernel^AI

Referencias

Mostrar las 8 referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-98422",
  "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": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "lessThan": "b0b32d3f163d24ea7134380666193bf398e9dc0b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "lessThan": "f6b34a7d64324faf28eedc0f8678b0f832f1cc36",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "lessThan": "304a874670a0b6ab5589a7f60b4af0251797b121",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "lessThan": "7775759e3cb35ef5a571b2d877c2a9b70a5d5f08",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "lessThan": "3d76b45e8432c0d75fcb9e90d92eaa3176898adf",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "lessThan": "4b54d01b48445b66c9e576de92b90a3a3ae7b34a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "lessThan": "875835377d8d62c849b4eb03a7abfafa71d7668f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f9dca80b98caac8b4bfb43a2edf1e9f877ccf322",
              "lessThan": "4504f3960dc4501c73be9f99eabda2e26e9db41e",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/mac80211/iface.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.1"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.1",
              "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",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "net/mac80211/iface.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-14T14:17:53.737",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/304a874670a0b6ab5589a7f60b4af0251797b121",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3d76b45e8432c0d75fcb9e90d92eaa3176898adf",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4504f3960dc4501c73be9f99eabda2e26e9db41e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4b54d01b48445b66c9e576de92b90a3a3ae7b34a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7775759e3cb35ef5a571b2d877c2a9b70a5d5f08",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/875835377d8d62c849b4eb03a7abfafa71d7668f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b0b32d3f163d24ea7134380666193bf398e9dc0b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f6b34a7d64324faf28eedc0f8678b0f832f1cc36",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mac80211: reset the AP_VLAN tailroom counter on ifdown\n\nOn ifup, AP_VLAN interfaces get crypto_tx_tailroom_needed_cnt from\nthe AP interface, but it's never decremented again unless the AP is\nalso brought down. Thus, bringing the same AP_VLAN up again will\nincrement the counter again and eventually hit the sanity check:\n\n  WARN_ON_ONCE(sdata->crypto_tx_tailroom_needed_cnt !=\n               master->crypto_tx_tailroom_needed_cnt);\n\nReset it on ifdown to avoid that."
    }
  ],
  "lastModified": "2026-10-19T10:18:47.790",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}