CVE-2022-48981

Estado: ModificadaAlta (7.8)—

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

drm/shmem-helper: Remove errant put in error path

drm_gem_shmem_mmap() doesn't own this reference, resulting in the GEM object getting prematurely freed leading to a later use-after-free.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.25%
Percentil entre todas las CVEs puntuadas: 15
Fecha de la puntuación: 5/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation90 %
Impacto principalT1059 Command and Scripting Interpreterexecution75 %

AV:L/PR:L sin UI permite escalada local. Use-after-free en kernel permite ejecución de código arbitrario con privilegios elevados (CWE-416).

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

Execution Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Behavior Prevention on Endpoint

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-416

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2022-48981",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-48981",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-22T13:17:51.238868Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "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": [
            {
              "status": "affected",
              "version": "2194a63a818db71065ebe09c8104f5f021ca4e7b",
              "lessThan": "585a07b820059462e0c93b76c7de2cd946b26b40",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2194a63a818db71065ebe09c8104f5f021ca4e7b",
              "lessThan": "6a4da05acd062ae7774b6b19cef2b7d922902d36",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2194a63a818db71065ebe09c8104f5f021ca4e7b",
              "lessThan": "83e3da8bb92fcfa7a1d232cf55f9e6c49bb84942",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2194a63a818db71065ebe09c8104f5f021ca4e7b",
              "lessThan": "586847b98e20ab02212ca5c1fc46680384e68a28",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "2194a63a818db71065ebe09c8104f5f021ca4e7b",
              "lessThan": "24013314be6ee4ee456114a671e9fa3461323de8",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/drm_gem_shmem_helper.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.2"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "5.2",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.4.227",
              "versionType": "semver",
              "lessThanOrEqual": "5.4.*"
            },
            {
              "status": "unaffected",
              "version": "5.10.159",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.83",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.0.13",
              "versionType": "semver",
              "lessThanOrEqual": "6.0.*"
            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/drm_gem_shmem_helper.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2024-10-21T20:15:10.130",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/24013314be6ee4ee456114a671e9fa3461323de8",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/585a07b820059462e0c93b76c7de2cd946b26b40",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/586847b98e20ab02212ca5c1fc46680384e68a28",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6a4da05acd062ae7774b6b19cef2b7d922902d36",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/83e3da8bb92fcfa7a1d232cf55f9e6c49bb84942",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/shmem-helper: Remove errant put in error path\n\ndrm_gem_shmem_mmap() doesn't own this reference, resulting in the GEM\nobject getting prematurely freed leading to a later use-after-free."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/shmem-helper: eliminar una ubicación errada en la ruta de error drm_gem_shmem_mmap() no posee esta referencia, lo que provoca que el objeto GEM se libere prematuramente y lleve a un use after free."
    }
  ],
  "lastModified": "2026-08-04T10:17:29.200",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7B395613-A8F7-4D25-ACBF-81183F723931",
              "versionEndExcluding": "5.4.227",
              "versionStartIncluding": "5.2"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7318B597-DFFD-4BBC-A947-539D6E30D82A",
              "versionEndExcluding": "5.10.159",
              "versionStartIncluding": "5.5"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "90897BD1-104D-4CFF-94F5-29F9041217FB",
              "versionEndExcluding": "5.15.83",
              "versionStartIncluding": "5.11"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "389392A7-81C4-4C26-884B-8C7CF0F53DA4",
              "versionEndExcluding": "6.0.13",
              "versionStartIncluding": "5.16"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E7E331DA-1FB0-4DEC-91AC-7DA69D461C11"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "17F0B248-42CF-4AE6-A469-BB1BAE7F4705"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E2422816-0C14-4B5E-A1E6-A9D776E5C49B"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc4:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1C6E00FE-5FB9-4D20-A1A1-5A32128F9B76"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc5:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "35B26BE4-43A6-4A36-A7F6-5B3F572D9186"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc6:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3FFFB0B3-930D-408A-91E2-BAE0C2715D80"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc7:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8535320E-A0DB-4277-800E-D0CE5BBA59E8"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc8:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "21718AA4-4056-40F2-968E-BDAA465A7872"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}