FKIE_CVE-2024-56556

Vulnerability from fkie_nvd - Published: 2024-12-27 15:15 - Updated: 2026-06-17 08:12
Severity
7.0 (High) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: binder: fix node UAF in binder_add_freeze_work() In binder_add_freeze_work() we iterate over the proc->nodes with the proc->inner_lock held. However, this lock is temporarily dropped in order to acquire the node->lock first (lock nesting order). This can race with binder_node_release() and trigger a use-after-free: ================================================================== BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x19c Write of size 4 at addr ffff53c04c29dd04 by task freeze/640 CPU: 5 UID: 0 PID: 640 Comm: freeze Not tainted 6.11.0-07343-ga727812a8d45 #17 Hardware name: linux,dummy-virt (DT) Call trace: _raw_spin_lock+0xe4/0x19c binder_add_freeze_work+0x148/0x478 binder_ioctl+0x1e70/0x25ac __arm64_sys_ioctl+0x124/0x190 Allocated by task 637: __kmalloc_cache_noprof+0x12c/0x27c binder_new_node+0x50/0x700 binder_transaction+0x35ac/0x6f74 binder_thread_write+0xfb8/0x42a0 binder_ioctl+0x18f0/0x25ac __arm64_sys_ioctl+0x124/0x190 Freed by task 637: kfree+0xf0/0x330 binder_thread_read+0x1e88/0x3a68 binder_ioctl+0x16d8/0x25ac __arm64_sys_ioctl+0x124/0x190 ================================================================== Fix the race by taking a temporary reference on the node before releasing the proc->inner lock. This ensures the node remains alive while in use.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/38fbefeb2c140b581ed7de8117a5c90d6dd89c22Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/dc8aea47b928cc153b591b3558829ce42f685074Patch
Impacted products
Vendor Product Version
linux linux_kernel *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/android/binder.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "38fbefeb2c140b581ed7de8117a5c90d6dd89c22",
              "status": "affected",
              "version": "d579b04a52a183db47dfcb7a44304d7747d551e1",
              "versionType": "git"
            },
            {
              "lessThan": "dc8aea47b928cc153b591b3558829ce42f685074",
              "status": "affected",
              "version": "d579b04a52a183db47dfcb7a44304d7747d551e1",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/android/binder.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.12"
            },
            {
              "lessThan": "6.12",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.4",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.13",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "938626A1-5477-4679-A5E2-2AADE66DEDCA",
              "versionEndExcluding": "6.12.4",
              "versionStartIncluding": "6.12",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbinder: fix node UAF in binder_add_freeze_work()\n\nIn binder_add_freeze_work() we iterate over the proc-\u003enodes with the\nproc-\u003einner_lock held. However, this lock is temporarily dropped in\norder to acquire the node-\u003elock first (lock nesting order). This can\nrace with binder_node_release() and trigger a use-after-free:\n\n  ==================================================================\n  BUG: KASAN: slab-use-after-free in _raw_spin_lock+0xe4/0x19c\n  Write of size 4 at addr ffff53c04c29dd04 by task freeze/640\n\n  CPU: 5 UID: 0 PID: 640 Comm: freeze Not tainted 6.11.0-07343-ga727812a8d45 #17\n  Hardware name: linux,dummy-virt (DT)\n  Call trace:\n   _raw_spin_lock+0xe4/0x19c\n   binder_add_freeze_work+0x148/0x478\n   binder_ioctl+0x1e70/0x25ac\n   __arm64_sys_ioctl+0x124/0x190\n\n  Allocated by task 637:\n   __kmalloc_cache_noprof+0x12c/0x27c\n   binder_new_node+0x50/0x700\n   binder_transaction+0x35ac/0x6f74\n   binder_thread_write+0xfb8/0x42a0\n   binder_ioctl+0x18f0/0x25ac\n   __arm64_sys_ioctl+0x124/0x190\n\n  Freed by task 637:\n   kfree+0xf0/0x330\n   binder_thread_read+0x1e88/0x3a68\n   binder_ioctl+0x16d8/0x25ac\n   __arm64_sys_ioctl+0x124/0x190\n  ==================================================================\n\nFix the race by taking a temporary reference on the node before\nreleasing the proc-\u003einner lock. This ensures the node remains alive\nwhile in use."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: binder: reparar el UAF del nodo en binder_add_freeze_work() En binder_add_freeze_work() iteramos sobre proc-\u0026gt;nodes con el proc-\u0026gt;inner_lock retenido. Sin embargo, este bloqueo se elimina temporalmente para adquirir primero el node-\u0026gt;lock (orden de anidamiento de bloqueos). Esto puede competir con binder_node_release() y activar un use-after-free: ====================================================================== ERROR: KASAN: use-after-free de losa en _raw_spin_lock+0xe4/0x19c Escritura de tama\u00f1o 4 en la direcci\u00f3n ffff53c04c29dd04 por la tarea freeze/640 CPU: 5 UID: 0 PID: 640 Comm: freeze No contaminado 6.11.0-07343-ga727812a8d45 #17 Nombre del hardware: linux,dummy-virt (DT) Rastreo de llamadas: _raw_spin_lock+0xe4/0x19c binder_add_freeze_work+0x148/0x478 binder_ioctl+0x1e70/0x25ac __arm64_sys_ioctl+0x124/0x190 Asignado por la tarea 637: __kmalloc_cache_noprof+0x12c/0x27c binder_new_node+0x50/0x700 binder_transaction+0x35ac/0x6f74 binder_thread_write+0xfb8/0x42a0 binder_ioctl+0x18f0/0x25ac __arm64_sys_ioctl+0x124/0x190 Liberado por la tarea 637: kfree+0xf0/0x330 binder_thread_read+0x1e88/0x3a68 binder_ioctl+0x16d8/0x25ac __arm64_sys_ioctl+0x124/0x190 == ..."
    }
  ],
  "id": "CVE-2024-56556",
  "lastModified": "2026-06-17T08:12:23.020",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.0,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.0,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-56556",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-02-10T17:12:44.371493Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-12-27T15:15:14.410",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/38fbefeb2c140b581ed7de8117a5c90d6dd89c22"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/dc8aea47b928cc153b591b3558829ce42f685074"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        },
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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