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CVE-2022-50556

Estado: AplazadaSin puntuar—

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

drm: Fix potential null-ptr-deref due to drmm_mode_config_init()

drmm_mode_config_init() will call drm_mode_create_standard_properties() and won't check the ret value. When drm_mode_create_standard_properties() failed due to alloc, property will be a NULL pointer and may causes the null-ptr-deref. Fix the null-ptr-deref by adding the ret value check.

Detalles técnicos trazas, registros y código del informe original
Found null-ptr-deref while testing insert module bochs:
general protection fault, probably for non-canonical address
    0xdffffc000000000c: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]
CPU: 3 PID: 249 Comm: modprobe Not tainted 6.1.0-rc1+ #364
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014
RIP: 0010:drm_object_attach_property+0x73/0x3c0 [drm]
Call Trace:
 <TASK>
 __drm_connector_init+0xb6c/0x1100 [drm]
 bochs_pci_probe.cold.11+0x4cb/0x7fe [bochs]
 pci_device_probe+0x17d/0x340
 really_probe+0x1db/0x5d0
 __driver_probe_device+0x1e7/0x250
 driver_probe_device+0x4a/0x120
 __driver_attach+0xcd/0x2c0
 bus_for_each_dev+0x11a/0x1b0
 bus_add_driver+0x3d7/0x500
 driver_register+0x18e/0x320
 do_one_initcall+0xc4/0x3e0
 do_init_module+0x1b4/0x630
 load_module+0x5dca/0x7230
 __do_sys_finit_module+0x100/0x170
 do_syscall_64+0x3f/0x90
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff65af9f839

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

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)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2022-50556",
  "cveTags": [],
  "metrics": {},
  "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": "6b4959f43a04e12d39c5700607727f2cbcfeac31",
              "lessThan": "5ae70041a6d7de62a0cdb2bbcfe0c9cf753035d0",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6b4959f43a04e12d39c5700607727f2cbcfeac31",
              "lessThan": "d06e827a65a6bcd2e329045d891d0739cec1cf4a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6b4959f43a04e12d39c5700607727f2cbcfeac31",
              "lessThan": "b14147464251f66e38fa39f0aae9780466db8610",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6b4959f43a04e12d39c5700607727f2cbcfeac31",
              "lessThan": "961620ad67611a7320a49f4b6f3c5e2906833a03",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6b4959f43a04e12d39c5700607727f2cbcfeac31",
              "lessThan": "834c23e4f798dcdc8af251b3c428ceef94741991",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/drm_mode_config.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "4.0"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "4.0",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.173",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.99",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.16",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/drm_mode_config.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-10-22T14:15:39.673",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/5ae70041a6d7de62a0cdb2bbcfe0c9cf753035d0",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/834c23e4f798dcdc8af251b3c428ceef94741991",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/961620ad67611a7320a49f4b6f3c5e2906833a03",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b14147464251f66e38fa39f0aae9780466db8610",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/d06e827a65a6bcd2e329045d891d0739cec1cf4a",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm: Fix potential null-ptr-deref due to drmm_mode_config_init()\n\ndrmm_mode_config_init() will call drm_mode_create_standard_properties()\nand won't check the ret value. When drm_mode_create_standard_properties()\nfailed due to alloc, property will be a NULL pointer and may causes the\nnull-ptr-deref. Fix the null-ptr-deref by adding the ret value check.\n\nFound null-ptr-deref while testing insert module bochs:\ngeneral protection fault, probably for non-canonical address\n    0xdffffc000000000c: 0000 [#1] SMP KASAN PTI\nKASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]\nCPU: 3 PID: 249 Comm: modprobe Not tainted 6.1.0-rc1+ #364\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\nrel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014\nRIP: 0010:drm_object_attach_property+0x73/0x3c0 [drm]\nCall Trace:\n <TASK>\n __drm_connector_init+0xb6c/0x1100 [drm]\n bochs_pci_probe.cold.11+0x4cb/0x7fe [bochs]\n pci_device_probe+0x17d/0x340\n really_probe+0x1db/0x5d0\n __driver_probe_device+0x1e7/0x250\n driver_probe_device+0x4a/0x120\n __driver_attach+0xcd/0x2c0\n bus_for_each_dev+0x11a/0x1b0\n bus_add_driver+0x3d7/0x500\n driver_register+0x18e/0x320\n do_one_initcall+0xc4/0x3e0\n do_init_module+0x1b4/0x630\n load_module+0x5dca/0x7230\n __do_sys_finit_module+0x100/0x170\n do_syscall_64+0x3f/0x90\n entry_SYSCALL_64_after_hwframe+0x63/0xcd\nRIP: 0033:0x7ff65af9f839"
    }
  ],
  "lastModified": "2026-06-17T05:23:47.193",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}