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CVE-2022-49830

Estado: AnalizadaMedia (5.5)—

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

drm/drv: Fix potential memory leak in drm_dev_init()

drm_dev_init() will add drm_dev_init_release() as a callback. When drmm_add_action() failed, the release function won't be added. As the result, the ref cnt added by device_get() in drm_dev_init() won't be put by drm_dev_init_release(), which leads to the memleak. Use drmm_add_action_or_reset() instead of drmm_add_action() to prevent memleak.

Detalles técnicos trazas, registros y código del informe original
unreferenced object 0xffff88810bc0c800 (size 2048):
  comm "modprobe", pid 8322, jiffies 4305809845 (age 15.292s)
  hex dump (first 32 bytes):
    e8 cc c0 0b 81 88 ff ff ff ff ff ff 00 00 00 00  ................
    20 24 3c 0c 81 88 ff ff 18 c8 c0 0b 81 88 ff ff   $<.............
  backtrace:
    [<000000007251f72d>] __kmalloc+0x4b/0x1c0
    [<0000000045f21f26>] platform_device_alloc+0x2d/0xe0
    [<000000004452a479>] platform_device_register_full+0x24/0x1c0
    [<0000000089f4ea61>] 0xffffffffa0736051
    [<00000000235b2441>] do_one_initcall+0x7a/0x380
    [<0000000001a4a177>] do_init_module+0x5c/0x230
    [<000000002bf8a8e2>] load_module+0x227d/0x2420
    [<00000000637d6d0a>] __do_sys_finit_module+0xd5/0x140
    [<00000000c99fc324>] do_syscall_64+0x3f/0x90
    [<000000004d85aa77>] entry_SYSCALL_64_after_hwframe+0x63/0xcd

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-2022-49830",
  "cveTags": [],
  "metrics": {
    "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": "2cbf7fc6718b9443ecd6261308c6348d8ffcccae",
              "lessThan": "c47a823ea186263ab69cfb665327b7f72cb5e779",
              "versionType": "git"
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            {
              "status": "affected",
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              "lessThan": "bd8d1335e6e70a396094ef98913b513140c0b86b",
              "versionType": "git"
            },
            {
              "status": "affected",
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              "lessThan": "ff963634f7b2e0dc011349abb3fb81a0d074f443",
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          "programFiles": [
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          "defaultStatus": "unaffected"
        },
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              "status": "unaffected",
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              "version": "5.15.80",
              "versionType": "semver",
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              "status": "unaffected",
              "version": "6.0.10",
              "versionType": "semver",
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            },
            {
              "status": "unaffected",
              "version": "6.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/drm_drv.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-05-01T15:16:06.470",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/07e56de8766fe5be67252596244b84ac0ec0de91",
      "tags": [
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    {
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      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c47a823ea186263ab69cfb665327b7f72cb5e779",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/drv: Fix potential memory leak in drm_dev_init()\n\ndrm_dev_init() will add drm_dev_init_release() as a callback. When\ndrmm_add_action() failed, the release function won't be added. As the\nresult, the ref cnt added by device_get() in drm_dev_init() won't be put\nby drm_dev_init_release(), which leads to the memleak. Use\ndrmm_add_action_or_reset() instead of drmm_add_action() to prevent\nmemleak.\n\nunreferenced object 0xffff88810bc0c800 (size 2048):\n  comm \"modprobe\", pid 8322, jiffies 4305809845 (age 15.292s)\n  hex dump (first 32 bytes):\n    e8 cc c0 0b 81 88 ff ff ff ff ff ff 00 00 00 00  ................\n    20 24 3c 0c 81 88 ff ff 18 c8 c0 0b 81 88 ff ff   $<.............\n  backtrace:\n    [<000000007251f72d>] __kmalloc+0x4b/0x1c0\n    [<0000000045f21f26>] platform_device_alloc+0x2d/0xe0\n    [<000000004452a479>] platform_device_register_full+0x24/0x1c0\n    [<0000000089f4ea61>] 0xffffffffa0736051\n    [<00000000235b2441>] do_one_initcall+0x7a/0x380\n    [<0000000001a4a177>] do_init_module+0x5c/0x230\n    [<000000002bf8a8e2>] load_module+0x227d/0x2420\n    [<00000000637d6d0a>] __do_sys_finit_module+0xd5/0x140\n    [<00000000c99fc324>] do_syscall_64+0x3f/0x90\n    [<000000004d85aa77>] entry_SYSCALL_64_after_hwframe+0x63/0xcd"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/drv: Se solucionó una posible fuga de memoria en drm_dev_init(). drm_dev_init() añadirá drm_dev_init_release() como devolución de llamada. Si drmm_add_action() falla, la función de liberación no se añadirá. Como resultado, el valor de referencia añadido por device_get() en drm_dev_init() no se incluirá en drm_dev_init_release(), lo que provoca la fuga de memoria. Utilice drmm_add_action_or_reset() en lugar de drmm_add_action() para evitar la fuga de memoria. objeto sin referencia 0xffff88810bc0c800 (tamaño 2048): comm \"modprobe\", pid 8322, jiffies 4305809845 (antigüedad 15.292s) volcado hexadecimal (primeros 32 bytes): e8 cc c0 0b 81 88 ff ff ff ff ff ff ff 00 00 00 00 ................ 20 24 3c 0c 81 88 ff ff 18 c8 c0 0b 81 88 ff ff $&lt;............. backtrace:  [&lt;000000007251f72d&gt;] __kmalloc+0x4b/0x1c0 [&lt;0000000045f21f26&gt;] platform_device_alloc+0x2d/0xe0 [&lt;000000004452a479&gt;] platform_device_register_full+0x24/0x1c0 [&lt;0000000089f4ea61&gt;] 0xffffffffa0736051 [&lt;00000000235b2441&gt;] do_one_initcall+0x7a/0x380 [&lt;0000000001a4a177&gt;] do_init_module+0x5c/0x230 [&lt;000000002bf8a8e2&gt;] load_module+0x227d/0x2420 [&lt;00000000637d6d0a&gt;] __do_sys_finit_module+0xd5/0x140 [&lt;00000000c99fc324&gt;] do_syscall_64+0x3f/0x90 [&lt;000000004d85aa77&gt;] entry_SYSCALL_64_after_hwframe+0x63/0xcd "
    }
  ],
  "lastModified": "2026-06-17T05:19:14.837",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4BE6700E-DF20-41B4-AB3C-6375B309FA3C",
              "versionEndExcluding": "5.10.156",
              "versionStartIncluding": "5.8"
            },
            {
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              "matchCriteriaId": "64F9ADD1-3ADB-4D66-A00F-4A83010B05F0",
              "versionEndExcluding": "6.0.10",
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              "criteria": "cpe:2.3:o:linux:linux_kernel:6.1:rc1:*:*:*:*:*:*",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}