« Volver al listado

CVE-2024-49919

Estado: ModificadaMedia (5.5)—

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

drm/amd/display: Add null check for head_pipe in dcn201_acquire_free_pipe_for_layer

This commit addresses a potential null pointer dereference issue in the `dcn201_acquire_free_pipe_for_layer` function. The issue could occur when `head_pipe` is null.

The fix adds a check to ensure `head_pipe` is not null before asserting it. If `head_pipe` is null, the function returns NULL to prevent a potential null pointer dereference.

Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn201/dcn201_resource.c:1016 dcn201_acquire_free_pipe_for_layer() error: we previously assumed 'head_pipe' could be null (see line 1010)

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)

Mostrar
{
  "id": "CVE-2024-49919",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-49919",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-22T13:40:36.842077Z"
        }
      }
    ],
    "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": [
            {
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "lessThan": "16ce8fd94da8599bb6f0496895d392a69aead1c0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "lessThan": "390d757621f5f35d11a63ed7d9d3262ead240064",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "lessThan": "8a1b1655a490a492a5a6987254c935ecce4eb9de",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c",
              "lessThan": "f22f4754aaa47d8c59f166ba3042182859e5dff7",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/resource/dcn201/dcn201_resource.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.79",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.10.14",
              "versionType": "semver",
              "lessThanOrEqual": "6.10.*"
            },
            {
              "status": "unaffected",
              "version": "6.11.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.11.*"
            },
            {
              "status": "unaffected",
              "version": "6.12",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/amd/display/dc/resource/dcn201/dcn201_resource.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2024-10-21T18:15:14.117",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/16ce8fd94da8599bb6f0496895d392a69aead1c0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/390d757621f5f35d11a63ed7d9d3262ead240064",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/8a1b1655a490a492a5a6987254c935ecce4eb9de",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f22f4754aaa47d8c59f166ba3042182859e5dff7",
      "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\ndrm/amd/display: Add null check for head_pipe in dcn201_acquire_free_pipe_for_layer\n\nThis commit addresses a potential null pointer dereference issue in the\n`dcn201_acquire_free_pipe_for_layer` function. The issue could occur\nwhen `head_pipe` is null.\n\nThe fix adds a check to ensure `head_pipe` is not null before asserting\nit. If `head_pipe` is null, the function returns NULL to prevent a\npotential null pointer dereference.\n\nReported by smatch:\ndrivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn201/dcn201_resource.c:1016 dcn201_acquire_free_pipe_for_layer() error: we previously assumed 'head_pipe' could be null (see line 1010)"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: Agregar comprobación NULL para head_pipe en dcn201_acquire_free_pipe_for_layer Esta confirmación soluciona un posible problema de desreferencia de puntero nulo en la función `dcn201_acquire_free_pipe_for_layer`. El problema podría ocurrir cuando `head_pipe` es nulo. La corrección agrega una comprobación para garantizar que `head_pipe` no sea nulo antes de confirmarlo. Si `head_pipe` es nulo, la función devuelve NULL para evitar una posible desreferencia de puntero nulo. Reportado por smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/resource/dcn201/dcn201_resource.c:1016 Error de dcn201_acquire_free_pipe_for_layer(): anteriormente asumimos que 'head_pipe' podría ser nulo (ver línea 1010)"
    }
  ],
  "lastModified": "2026-06-17T08:00:44.093",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "652638C5-5F25-4DF3-AD42-DD3252A97152",
              "versionEndExcluding": "6.10.14"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "54D9C704-D679-41A7-9C40-10A6B1E7FFE9",
              "versionEndExcluding": "6.11.3",
              "versionStartIncluding": "6.11"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}