fkie_cve-2024-56553
Vulnerability from fkie_nvd
Published
2024-12-27 15:15
Modified
2025-04-17 21:15
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.3 (Low) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Summary
In the Linux kernel, the following vulnerability has been resolved: binder: fix memleak of proc->delivered_freeze If a freeze notification is cleared with BC_CLEAR_FREEZE_NOTIFICATION before calling binder_freeze_notification_done(), then it is detached from its reference (e.g. ref->freeze) but the work remains queued in proc->delivered_freeze. This leads to a memory leak when the process exits as any pending entries in proc->delivered_freeze are not freed: unreferenced object 0xffff38e8cfa36180 (size 64): comm "binder-util", pid 655, jiffies 4294936641 hex dump (first 32 bytes): b8 e9 9e c8 e8 38 ff ff b8 e9 9e c8 e8 38 ff ff .....8.......8.. 0b 00 00 00 00 00 00 00 3c 1f 4b 00 00 00 00 00 ........<.K..... backtrace (crc 95983b32): [<000000000d0582cf>] kmemleak_alloc+0x34/0x40 [<000000009c99a513>] __kmalloc_cache_noprof+0x208/0x280 [<00000000313b1704>] binder_thread_write+0xdec/0x439c [<000000000cbd33bb>] binder_ioctl+0x1b68/0x22cc [<000000002bbedeeb>] __arm64_sys_ioctl+0x124/0x190 [<00000000b439adee>] invoke_syscall+0x6c/0x254 [<00000000173558fc>] el0_svc_common.constprop.0+0xac/0x230 [<0000000084f72311>] do_el0_svc+0x40/0x58 [<000000008b872457>] el0_svc+0x38/0x78 [<00000000ee778653>] el0t_64_sync_handler+0x120/0x12c [<00000000a8ec61bf>] el0t_64_sync+0x190/0x194 This patch fixes the leak by ensuring that any pending entries in proc->delivered_freeze are freed during binder_deferred_release().
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1db76ec2b4b206ff943e292a0b55e68ff3443598Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b8b77712142fb146fe18d2253bc8a798d522e427Patch
Impacted products
Vendor Product Version
linux linux_kernel *


To clipboard 

{
  "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 memleak of proc-\u003edelivered_freeze\n\nIf a freeze notification is cleared with BC_CLEAR_FREEZE_NOTIFICATION\nbefore calling binder_freeze_notification_done(), then it is detached\nfrom its reference (e.g. ref-\u003efreeze) but the work remains queued in\nproc-\u003edelivered_freeze. This leads to a memory leak when the process\nexits as any pending entries in proc-\u003edelivered_freeze are not freed:\n\n  unreferenced object 0xffff38e8cfa36180 (size 64):\n    comm \"binder-util\", pid 655, jiffies 4294936641\n    hex dump (first 32 bytes):\n      b8 e9 9e c8 e8 38 ff ff b8 e9 9e c8 e8 38 ff ff  .....8.......8..\n      0b 00 00 00 00 00 00 00 3c 1f 4b 00 00 00 00 00  ........\u003c.K.....\n    backtrace (crc 95983b32):\n      [\u003c000000000d0582cf\u003e] kmemleak_alloc+0x34/0x40\n      [\u003c000000009c99a513\u003e] __kmalloc_cache_noprof+0x208/0x280\n      [\u003c00000000313b1704\u003e] binder_thread_write+0xdec/0x439c\n      [\u003c000000000cbd33bb\u003e] binder_ioctl+0x1b68/0x22cc\n      [\u003c000000002bbedeeb\u003e] __arm64_sys_ioctl+0x124/0x190\n      [\u003c00000000b439adee\u003e] invoke_syscall+0x6c/0x254\n      [\u003c00000000173558fc\u003e] el0_svc_common.constprop.0+0xac/0x230\n      [\u003c0000000084f72311\u003e] do_el0_svc+0x40/0x58\n      [\u003c000000008b872457\u003e] el0_svc+0x38/0x78\n      [\u003c00000000ee778653\u003e] el0t_64_sync_handler+0x120/0x12c\n      [\u003c00000000a8ec61bf\u003e] el0t_64_sync+0x190/0x194\n\nThis patch fixes the leak by ensuring that any pending entries in\nproc-\u003edelivered_freeze are freed during binder_deferred_release()."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: binder: corrige p\u00e9rdida de memoria de proc-\u0026gt;delivered_freeze Si se borra una notificaci\u00f3n de congelamiento con BC_CLEAR_FREEZE_NOTIFICATION antes de llamar a binder_freeze_notification_done(), entonces se separa de su referencia (por ejemplo, ref-\u0026gt;freeze) pero el trabajo permanece en cola en proc-\u0026gt;delivered_freeze. Esto genera una p\u00e9rdida de memoria cuando el proceso finaliza, ya que no se liberan las entradas pendientes en proc-\u0026gt;delivered_freeze: objeto sin referencia 0xffff38e8cfa36180 (tama\u00f1o 64): comm \"binder-util\", pid 655, jiffies 4294936641 volcado hexadecimal (primeros 32 bytes): b8 e9 9e c8 e8 38 ff ff b8 e9 9e c8 e8 38 ff ff .....8.......8.. 0b 00 00 00 00 00 00 00 3c 1f 4b 00 00 00 00 00 ........\u0026lt;.K..... backtrace (crc 95983b32): [\u0026lt;000000000d0582cf\u0026gt;] kmemleak_alloc+0x34/0x40 [\u0026lt;000000009c99a513\u0026gt;] __kmalloc_cache_noprof+0x208/0x280 [\u0026lt;00000000313b1704\u0026gt;] binder_thread_write+0xdec/0x439c [\u0026lt;000000000cbd33bb\u0026gt;] binder_ioctl+0x1b68/0x22cc [\u0026lt;000000002bbedeeb\u0026gt;] __arm64_sys_ioctl+0x124/0x190 [\u0026lt;00000000b439adee\u0026gt;] invocar_syscall+0x6c/0x254 [\u0026lt;00000000173558fc\u0026gt;] Este parche corrige la fuga al garantizar que todas las entradas pendientes en proc-\u0026gt;delivered_freeze se liberen durante binder_deferred_release()."
    }
  ],
  "id": "CVE-2024-56553",
  "lastModified": "2025-04-17T21:15:48.740",
  "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"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "LOW",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "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:L",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-12-27T15:15:14.073",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/1db76ec2b4b206ff943e292a0b55e68ff3443598"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/b8b77712142fb146fe18d2253bc8a798d522e427"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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