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CVE-2026-98182

Estado: RecibidaSin puntuar—

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

wifi: mac80211: refuse to make a monitor active when it has no queue

A monitor interface only gets a TXQ if it's created active, and one can't be added later. Setting the flag on a down interface is still allowed, so the driver is handed a monitor with no queue. ath9k dereferences it:

Reached with CAP_NET_ADMIN by "iw dev X set monitor active" followed by "ip link set X up". RTNL is held, so netlink operations block behind it.

Refuse the flag when there is no queue to give.

Detalles técnicos trazas, registros y código del informe original
  BUG: kernel NULL pointer dereference, address: 0000000000000066
  RIP: 0010:ath_tx_node_init+0x49/0x170 [ath9k]
   ath9k_add_interface+0x10c/0x140 [ath9k]
   drv_add_interface+0x54/0x250 [mac80211]
   ieee80211_do_open+0x32f/0x800 [mac80211]

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-2026-98182",
  "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": "79af1f866193de29e65a4dba7d0dab14b0c0ff93",
              "lessThan": "b7b7d46ec4fa127767931938b282c361c0519af6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "79af1f866193de29e65a4dba7d0dab14b0c0ff93",
              "lessThan": "abe15e643e576459469867758ae9c586a7bab95d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "79af1f866193de29e65a4dba7d0dab14b0c0ff93",
              "lessThan": "46c223468537a05a404699771cd3e68532dab5e6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "79af1f866193de29e65a4dba7d0dab14b0c0ff93",
              "lessThan": "2b04d6556964ae9f89819b86a0a7801e39c3aae5",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "net/mac80211/cfg.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.15",
              "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/mac80211/cfg.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T09:18:02.967",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2b04d6556964ae9f89819b86a0a7801e39c3aae5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/46c223468537a05a404699771cd3e68532dab5e6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/abe15e643e576459469867758ae9c586a7bab95d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b7b7d46ec4fa127767931938b282c361c0519af6",
      "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: refuse to make a monitor active when it has no queue\n\nA monitor interface only gets a TXQ if it's created active, and one can't\nbe added later. Setting the flag on a down interface is still allowed, so\nthe driver is handed a monitor with no queue. ath9k dereferences it:\n\n  BUG: kernel NULL pointer dereference, address: 0000000000000066\n  RIP: 0010:ath_tx_node_init+0x49/0x170 [ath9k]\n   ath9k_add_interface+0x10c/0x140 [ath9k]\n   drv_add_interface+0x54/0x250 [mac80211]\n   ieee80211_do_open+0x32f/0x800 [mac80211]\n\nReached with CAP_NET_ADMIN by \"iw dev X set monitor active\" followed by\n\"ip link set X up\". RTNL is held, so netlink operations block behind it.\n\nRefuse the flag when there is no queue to give."
    }
  ],
  "lastModified": "2026-10-06T09:18:02.967",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}