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FKIE_CVE-2025-71124

Vulnerability from fkie_nvd - Published: 2026-01-14 15:16 - Updated: 2026-06-17 10:03
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/msm/a6xx: move preempt_prepare_postamble after error check Move the call to preempt_prepare_postamble() after verifying that preempt_postamble_ptr is valid. If preempt_postamble_ptr is NULL, dereferencing it in preempt_prepare_postamble() would lead to a crash. This change avoids calling the preparation function when the postamble allocation has failed, preventing potential NULL pointer dereference and ensuring proper error handling. Patchwork: https://patchwork.freedesktop.org/patch/687659/

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/msm/adreno/a6xx_preempt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "2c46497eb148ec61909f4101b8443f3c4c2daaec",
              "status": "affected",
              "version": "50117cad0c50410cff0d43a1141a562b1347e7c5",
              "versionType": "git"
            },
            {
              "lessThan": "ef3b04091fd8bc737dc45312375df8625b8318e2",
              "status": "affected",
              "version": "50117cad0c50410cff0d43a1141a562b1347e7c5",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/msm/adreno/a6xx_preempt.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
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              "matchCriteriaId": "1175098E-51C5-4022-AD0A-C8985F2787C6",
              "versionEndExcluding": "6.18.3",
              "versionStartIncluding": "6.13.1",
              "vulnerable": true
            },
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm/a6xx: move preempt_prepare_postamble after error check\n\nMove the call to preempt_prepare_postamble() after verifying that\npreempt_postamble_ptr is valid. If preempt_postamble_ptr is NULL,\ndereferencing it in preempt_prepare_postamble() would lead to a crash.\n\nThis change avoids calling the preparation function when the\npostamble allocation has failed, preventing potential NULL pointer\ndereference and ensuring proper error handling.\n\nPatchwork: https://patchwork.freedesktop.org/patch/687659/"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/msm/a6xx: mover preempt_prepare_postamble despu\u00e9s de la verificaci\u00f3n de errores\n\nMover la llamada a preempt_prepare_postamble() despu\u00e9s de verificar que preempt_postamble_ptr es v\u00e1lido. Si preempt_postamble_ptr es NULL, desreferenciarlo en preempt_prepare_postamble() llevar\u00eda a un fallo.\n\nEste cambio evita llamar a la funci\u00f3n de preparaci\u00f3n cuando la asignaci\u00f3n del post\u00e1mbulo ha fallado, previniendo la desreferencia potencial de puntero NULL y asegurando un manejo de errores adecuado.\n\nPatchwork: https://patchwork.freedesktop.org/patch/687659/"
    }
  ],
  "id": "CVE-2025-71124",
  "lastModified": "2026-06-17T10:03:42.773",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-01-14T15:16:02.110",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/2c46497eb148ec61909f4101b8443f3c4c2daaec"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/ef3b04091fd8bc737dc45312375df8625b8318e2"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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