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CVE-2026-98196

Estado: RecibidaSin puntuar—

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

wifi: brcmsmac: fix UAF in brcms_free_timer()

brcms_free_timer() calls brcms_del_timer() which uses the non-synchronous cancel_delayed_work() to cancel the timer's underlying delayed work. If the work callback (_brcms_timer) is already running, cancel_delayed_work() returns false without waiting, and brcms_free_timer() proceeds to kfree(t) while the callback still accesses t through container_of().

Add an explicit cancel_delayed_work_sync() after brcms_del_timer() to guarantee that any in-flight callback has completed before the timer structure is freed.

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-2026-98196",
  "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": "5b435de0d786869c95d1962121af0d7df2542009",
              "lessThan": "10eeb0b29fd7f52487c9ae573e8d79c210a0095d",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5b435de0d786869c95d1962121af0d7df2542009",
              "lessThan": "74acccc928851f69184271832d690607877122af",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5b435de0d786869c95d1962121af0d7df2542009",
              "lessThan": "050d2486e8ed2c0a23b87249ccd23e8072721391",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5b435de0d786869c95d1962121af0d7df2542009",
              "lessThan": "856dabd5f2617efb23c043be9e1b22a9e6e97c41",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5b435de0d786869c95d1962121af0d7df2542009",
              "lessThan": "2a4841ff0b74b495cddd31ae324e922217fc2f13",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5b435de0d786869c95d1962121af0d7df2542009",
              "lessThan": "1edb3ddd261e973a4d577c0547e63bfa25a8170d",
              "versionType": "git"
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            {
              "status": "affected",
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              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.2"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.2",
              "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": [
            "drivers/net/wireless/broadcom/brcm80211/brcmsmac/mac80211_if.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T09:18:05.113",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/050d2486e8ed2c0a23b87249ccd23e8072721391",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/10eeb0b29fd7f52487c9ae573e8d79c210a0095d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1edb3ddd261e973a4d577c0547e63bfa25a8170d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/1eeca1d5e0920fbdad6449768fd2d4364e714180",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/2a4841ff0b74b495cddd31ae324e922217fc2f13",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/74acccc928851f69184271832d690607877122af",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/777cb6bba59e875b16a1d8897a483a5fecfcd5d2",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/856dabd5f2617efb23c043be9e1b22a9e6e97c41",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmsmac: fix UAF in brcms_free_timer()\n\nbrcms_free_timer() calls brcms_del_timer() which uses the non-synchronous\ncancel_delayed_work() to cancel the timer's underlying delayed work.  If\nthe work callback (_brcms_timer) is already running, cancel_delayed_work()\nreturns false without waiting, and brcms_free_timer() proceeds to kfree(t)\nwhile the callback still accesses t through container_of().\n\nAdd an explicit cancel_delayed_work_sync() after brcms_del_timer() to\nguarantee that any in-flight callback has completed before the timer\nstructure is freed."
    }
  ],
  "lastModified": "2026-10-06T09:18:05.113",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}