« Volver al listado

CVE-2026-72298

Estado: RecibidaAlta (8.4)—

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

net: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()

qrtr_endpoint_post() validates an incoming packet with

where size comes from the wire. On 32-bit, size_t is 32 bits and ALIGN(size, 4) wraps to 0 for size >= 0xfffffffd, so the check passes and skb_put_data(skb, data + hdrlen, size) writes past the hdrlen-sized skb and oopses the kernel. 64-bit is unaffected.

This is the 32-bit residual of ad9d24c9429e2 ("net: qrtr: fix OOB Read in qrtr_endpoint_post"), which fixed only the 64-bit case.

Reject any size that cannot fit the buffer before the ALIGN.

Detalles técnicos trazas, registros y código del informe original
	if (!size || len != ALIGN(size, 4) + hdrlen)
		goto err;

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Desbordamiento de enteros en kernel Linux (AV:L, PR:N, UI:N) permite escalada de privilegios o DoS. ALIGN() envuelve a 0 en 32-bit, escribiendo fuera de límites y causando crash (oops) o corrupción de memoria.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Threat Intelligence ProgramRestrict File and Directory PermissionsRemote Data StorageFilter Network TrafficExecution PreventionEncrypt Sensitive Information

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-2026-72298",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.4,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.5
      }
    ]
  },
  "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": "960b08dd36de1e341e3eb43d1c547513e338f4f8",
              "lessThan": "3665e644ea081c4624a1637023b0de3b29f4ae04",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d",
              "lessThan": "b609f7f46916c6b05585ca82455077198a23770f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d",
              "lessThan": "242408b5b763c01288adf3113cbce84378a76e1a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d",
              "lessThan": "d0597074e99731fdad5593e4f6d056a3866f2cab",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d",
              "lessThan": "689b7267f8632b4661879dc323e26ebb60978afb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d",
              "lessThan": "22100a8f73d4ae4f17697dae93d4e2e1d283a6ec",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d",
              "lessThan": "7f72c285f6d3bf63968a0344beee8ab1b370198b",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ad9d24c9429e2159d1e279dc3a83191ccb4daf1d",
              "lessThan": "20054869770c7df060c5ecee3e8bbf9029c47191",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "f8111c0d7ed42ede41a3d0d393b104de0730a8a6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "26b8d10703a9be45d6097946b2b4011f7dd2c56f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "19892ab9c9d838e2e5a7744d36e4bb8b7c3292fe",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "5.10.46",
              "lessThan": "5.10.261",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "4.19.196",
              "lessThan": "4.20",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.4.128",
              "lessThan": "5.5",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "5.12.13",
              "lessThan": "5.13",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "net/qrtr/af_qrtr.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.13",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.261",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.212",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.178",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "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": [
            "net/qrtr/af_qrtr.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-15T06:22:02.437",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/20054869770c7df060c5ecee3e8bbf9029c47191",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/22100a8f73d4ae4f17697dae93d4e2e1d283a6ec",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/242408b5b763c01288adf3113cbce84378a76e1a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/3665e644ea081c4624a1637023b0de3b29f4ae04",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/689b7267f8632b4661879dc323e26ebb60978afb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7f72c285f6d3bf63968a0344beee8ab1b370198b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b609f7f46916c6b05585ca82455077198a23770f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d0597074e99731fdad5593e4f6d056a3866f2cab",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: qrtr: fix 32-bit integer overflow in qrtr_endpoint_post()\n\nqrtr_endpoint_post() validates an incoming packet with\n\n\tif (!size || len != ALIGN(size, 4) + hdrlen)\n\t\tgoto err;\n\nwhere size comes from the wire. On 32-bit, size_t is 32 bits and\nALIGN(size, 4) wraps to 0 for size >= 0xfffffffd, so the check\npasses and skb_put_data(skb, data + hdrlen, size) writes past the\nhdrlen-sized skb and oopses the kernel. 64-bit is unaffected.\n\nThis is the 32-bit residual of ad9d24c9429e2 (\"net: qrtr: fix OOB\nRead in qrtr_endpoint_post\"), which fixed only the 64-bit case.\n\nReject any size that cannot fit the buffer before the ALIGN."
    }
  ],
  "lastModified": "2026-08-17T06:18:32.700",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}