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CVE-2026-46305

Estado: ModificadaMedia (5.5)—

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

staging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc

The return value of kzalloc_flex() is used without ensuring that the allocation succeeded, and the pointer is dereferenced unconditionally.

Guard the access to the allocated structure to avoid a potential NULL pointer dereference if the allocation fails.

CVSS

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)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-46305",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "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": [
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              "status": "affected",
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              "lessThan": "7d4024037ee309a8f0cb86b4093d59da0e135db8",
              "versionType": "git"
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            {
              "status": "affected",
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              "lessThan": "0a5f411becfb7c57aa89827213d31ef23a03d75a",
              "versionType": "git"
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            {
              "status": "affected",
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              "lessThan": "bc851db06045a40c18233dd76ef0562d7f8bb6db",
              "versionType": "git"
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          ],
          "programFiles": [
            "drivers/staging/rtl8723bs/os_dep/osdep_service.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "7.0",
              "versionType": "semver"
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              "version": "7.0.7",
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            {
              "status": "unaffected",
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              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/staging/rtl8723bs/os_dep/osdep_service.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-06-08T17:16:49.253",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/0a5f411becfb7c57aa89827213d31ef23a03d75a",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7d4024037ee309a8f0cb86b4093d59da0e135db8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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    {
      "url": "https://git.kernel.org/stable/c/bc851db06045a40c18233dd76ef0562d7f8bb6db",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nstaging: rtl8723bs: os_dep: avoid NULL pointer dereference in rtw_cbuf_alloc\n\nThe return value of kzalloc_flex() is used without\nensuring that the allocation succeeded, and the\npointer is dereferenced unconditionally.\n\nGuard the access to the allocated structure to\navoid a potential NULL pointer dereference if the\nallocation fails."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\nstaging: rtl8723bs: os_dep: evitar la desreferencia de puntero NULL en rtw_cbuf_alloc\n\nEl valor de retorno de kzalloc_flex() se utiliza sin asegurar que la asignación haya tenido éxito, y el puntero es desreferenciado incondicionalmente.\n\nProteger el acceso a la estructura asignada para evitar una potencial desreferencia de puntero NULL si la asignación falla."
    }
  ],
  "lastModified": "2026-09-14T12:17:42.407",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "7.0.7",
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          "operator": "OR"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}