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CVE-2026-74263

Estado: RecibidaSin puntuar—

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

net: wwan: t7xx: check skb_clone in control TX

t7xx_port_ctrl_tx() clones each skb fragment before passing it to the port transmit path. The clone is used immediately to set cloned->len, so an skb_clone() failure results in a NULL pointer dereference.

Check the clone before using it. If previous fragments were already queued, preserve the driver's existing partial-write behavior by returning the number of bytes submitted so far.

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-2026-74263",
  "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": "36bd28c1cb0dbf48645cfe43159907fb3253b33a",
              "lessThan": "7edd4db82f9429591de10be4c904c817f12ba029",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36bd28c1cb0dbf48645cfe43159907fb3253b33a",
              "lessThan": "112490467586146d323cb7230b1d72137e36900c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36bd28c1cb0dbf48645cfe43159907fb3253b33a",
              "lessThan": "f7aebaee2961bfcb86f282202d3dbd9b69db1a7c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36bd28c1cb0dbf48645cfe43159907fb3253b33a",
              "lessThan": "4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "36bd28c1cb0dbf48645cfe43159907fb3253b33a",
              "lessThan": "05f789fa90d95d5771230e78453cedff2486039d",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/wwan/t7xx/t7xx_port_wwan.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.4"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.4",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.145",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.97",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.40",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/wwan/t7xx/t7xx_port_wwan.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:25.570",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/05f789fa90d95d5771230e78453cedff2486039d",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/112490467586146d323cb7230b1d72137e36900c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4c1b25d85f4c9a0f85f3f8c39988ad266a3f3095",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7edd4db82f9429591de10be4c904c817f12ba029",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f7aebaee2961bfcb86f282202d3dbd9b69db1a7c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: wwan: t7xx: check skb_clone in control TX\n\nt7xx_port_ctrl_tx() clones each skb fragment before passing it to the\nport transmit path. The clone is used immediately to set cloned->len, so\nan skb_clone() failure results in a NULL pointer dereference.\n\nCheck the clone before using it. If previous fragments were already\nqueued, preserve the driver's existing partial-write behavior by\nreturning the number of bytes submitted so far."
    }
  ],
  "lastModified": "2026-08-17T06:19:19.870",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}