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CVE-2025-68189

Estado: AplazadaAlta (7.8)—

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

drm/msm: Fix GEM free for imported dma-bufs

Imported dma-bufs also have obj->resv != &obj->_resv. So we should check both this condition in addition to flags for handling the _NO_SHARE case.

Fixes this splat that was reported with IRIS video playback:

Patchwork: https://patchwork.freedesktop.org/patch/676273/

Detalles técnicos trazas, registros y código del informe original
    ------------[ cut here ]------------
    WARNING: CPU: 3 PID: 2040 at drivers/gpu/drm/msm/msm_gem.c:1127 msm_gem_free_object+0x1f8/0x264 [msm]
    CPU: 3 UID: 1000 PID: 2040 Comm: .gnome-shell-wr Not tainted 6.17.0-rc7 #1 PREEMPT
    pstate: 81400005 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)
    pc : msm_gem_free_object+0x1f8/0x264 [msm]
    lr : msm_gem_free_object+0x138/0x264 [msm]
    sp : ffff800092a1bb30
    x29: ffff800092a1bb80 x28: ffff800092a1bce8 x27: ffffbc702dbdbe08
    x26: 0000000000000008 x25: 0000000000000009 x24: 00000000000000a6
    x23: ffff00083c72f850 x22: ffff00083c72f868 x21: ffff00087e69f200
    x20: ffff00087e69f330 x19: ffff00084d157ae0 x18: 0000000000000000
    x17: 0000000000000000 x16: ffffbc704bd46b80 x15: 0000ffffd0959540
    x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000
    x11: ffffbc702e6cdb48 x10: 0000000000000000 x9 : 000000000000003f
    x8 : ffff800092a1ba90 x7 : 0000000000000000 x6 : 0000000000000020
    x5 : ffffbc704bd46c40 x4 : fffffdffe102cf60 x3 : 0000000000400032
    x2 : 0000000000020000 x1 : ffff00087e6978e8 x0 : ffff00087e6977e8
    Call trace:
     msm_gem_free_object+0x1f8/0x264 [msm] (P)
     drm_gem_object_free+0x1c/0x30 [drm]
     drm_gem_object_handle_put_unlocked+0x138/0x150 [drm]
     drm_gem_object_release_handle+0x5c/0xcc [drm]
     drm_gem_handle_delete+0x68/0xbc [drm]
     drm_gem_close_ioctl+0x34/0x40 [drm]
     drm_ioctl_kernel+0xc0/0x130 [drm]
     drm_ioctl+0x360/0x4e0 [drm]
     __arm64_sys_ioctl+0xac/0x104
     invoke_syscall+0x48/0x104
     el0_svc_common.constprop.0+0x40/0xe0
     do_el0_svc+0x1c/0x28
     el0_svc+0x34/0xec
     el0t_64_sync_handler+0xa0/0xe4
     el0t_64_sync+0x198/0x19c
    ---[ end trace 0000000000000000 ]---
    ------------[ cut here ]------------

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vulnerabilidad local de kernel (AV:L/PR:L) sin interacción que causa fallo en liberación de memoria (dma-buf), permitiendo DoS o corrupción de datos de otros procesos con privilegios de usuario.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Tecnologías afectadas (1)

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

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-68189",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "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": "de651b6e040ba419418a37401e45d24f133e8a59",
              "lessThan": "9674c4cb2fe62727a2e4d3f66065ab949dfa61be",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "de651b6e040ba419418a37401e45d24f133e8a59",
              "lessThan": "c34e08ba6c0037a72a7433741225b020c989e4ae",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/msm/msm_gem.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.17"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.17",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.17.8",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/gpu/drm/msm/msm_gem.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-16T14:15:51.567",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/9674c4cb2fe62727a2e4d3f66065ab949dfa61be",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c34e08ba6c0037a72a7433741225b020c989e4ae",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/msm: Fix GEM free for imported dma-bufs\n\nImported dma-bufs also have obj->resv != &obj->_resv.  So we should\ncheck both this condition in addition to flags for handling the\n_NO_SHARE case.\n\nFixes this splat that was reported with IRIS video playback:\n\n    ------------[ cut here ]------------\n    WARNING: CPU: 3 PID: 2040 at drivers/gpu/drm/msm/msm_gem.c:1127 msm_gem_free_object+0x1f8/0x264 [msm]\n    CPU: 3 UID: 1000 PID: 2040 Comm: .gnome-shell-wr Not tainted 6.17.0-rc7 #1 PREEMPT\n    pstate: 81400005 (Nzcv daif +PAN -UAO -TCO +DIT -SSBS BTYPE=--)\n    pc : msm_gem_free_object+0x1f8/0x264 [msm]\n    lr : msm_gem_free_object+0x138/0x264 [msm]\n    sp : ffff800092a1bb30\n    x29: ffff800092a1bb80 x28: ffff800092a1bce8 x27: ffffbc702dbdbe08\n    x26: 0000000000000008 x25: 0000000000000009 x24: 00000000000000a6\n    x23: ffff00083c72f850 x22: ffff00083c72f868 x21: ffff00087e69f200\n    x20: ffff00087e69f330 x19: ffff00084d157ae0 x18: 0000000000000000\n    x17: 0000000000000000 x16: ffffbc704bd46b80 x15: 0000ffffd0959540\n    x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000\n    x11: ffffbc702e6cdb48 x10: 0000000000000000 x9 : 000000000000003f\n    x8 : ffff800092a1ba90 x7 : 0000000000000000 x6 : 0000000000000020\n    x5 : ffffbc704bd46c40 x4 : fffffdffe102cf60 x3 : 0000000000400032\n    x2 : 0000000000020000 x1 : ffff00087e6978e8 x0 : ffff00087e6977e8\n    Call trace:\n     msm_gem_free_object+0x1f8/0x264 [msm] (P)\n     drm_gem_object_free+0x1c/0x30 [drm]\n     drm_gem_object_handle_put_unlocked+0x138/0x150 [drm]\n     drm_gem_object_release_handle+0x5c/0xcc [drm]\n     drm_gem_handle_delete+0x68/0xbc [drm]\n     drm_gem_close_ioctl+0x34/0x40 [drm]\n     drm_ioctl_kernel+0xc0/0x130 [drm]\n     drm_ioctl+0x360/0x4e0 [drm]\n     __arm64_sys_ioctl+0xac/0x104\n     invoke_syscall+0x48/0x104\n     el0_svc_common.constprop.0+0x40/0xe0\n     do_el0_svc+0x1c/0x28\n     el0_svc+0x34/0xec\n     el0t_64_sync_handler+0xa0/0xe4\n     el0t_64_sync+0x198/0x19c\n    ---[ end trace 0000000000000000 ]---\n    ------------[ cut here ]------------\n\nPatchwork: https://patchwork.freedesktop.org/patch/676273/"
    }
  ],
  "lastModified": "2026-07-30T06:24:32.877",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}