CVE-2025-38355

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: drm/xe: Process deferred GGTT node removals on device unwind While we are indirectly draining our dedicated workqueue ggtt->wq that we use to complete asynchronous removal of some GGTT nodes, this happends as part of the managed-drm unwinding (ggtt_fini_early), which could be later then manage-device unwinding, where we could already unmap our MMIO/GMS mapping (mmio_fini). This was recently observed during unsuccessful VF initialization: [ ] xe 0000:00:02.1: probe with driver xe failed with error -62 [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747340 __xe_bo_unpin_map_no_vm (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747540 __xe_bo_unpin_map_no_vm (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747240 __xe_bo_unpin_map_no_vm (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747040 tiles_fini (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e746840 mmio_fini (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747f40 xe_bo_pinned_fini (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e746b40 devm_drm_dev_init_release (16 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] drmres release begin [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef81640 __fini_relay (8 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80d40 guc_ct_fini (8 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80040 __drmm_mutex_release (8 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80140 ggtt_fini_early (8 bytes) and this was leading to: [ ] BUG: unable to handle page fault for address: ffffc900058162a0 [ ] #PF: supervisor write access in kernel mode [ ] #PF: error_code(0x0002) - not-present page [ ] Oops: Oops: 0002 [#1] SMP NOPTI [ ] Tainted: [W]=WARN [ ] Workqueue: xe-ggtt-wq ggtt_node_remove_work_func [xe] [ ] RIP: 0010:xe_ggtt_set_pte+0x6d/0x350 [xe] [ ] Call Trace: [ ] <TASK> [ ] xe_ggtt_clear+0xb0/0x270 [xe] [ ] ggtt_node_remove+0xbb/0x120 [xe] [ ] ggtt_node_remove_work_func+0x30/0x50 [xe] [ ] process_one_work+0x22b/0x6f0 [ ] worker_thread+0x1e8/0x3d Add managed-device action that will explicitly drain the workqueue with all pending node removals prior to releasing MMIO/GSM mapping. (cherry picked from commit 89d2835c3680ab1938e22ad81b1c9f8c686bd391)

Severity

MEDIUM

CVSS score

5.5 (v3.1)

Vulnerability status

Analyzed

Source identifier

416baaa9-dc9f-4396-8d5f-8c081fb06d67

Published

2025-07-25 13:15:24.240000

Last modified

2026-11-05 21:18:28.580000

View original CVE JSON

{
  "id": "CVE-2025-38355",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2025-07-25T13:15:24.240",
  "lastModified": "2026-11-05T21:18:28.580",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/xe: Process deferred GGTT node removals on device unwind\n\nWhile we are indirectly draining our dedicated workqueue ggtt->wq\nthat we use to complete asynchronous removal of some GGTT nodes,\nthis happends as part of the managed-drm unwinding (ggtt_fini_early),\nwhich could be later then manage-device unwinding, where we could\nalready unmap our MMIO/GMS mapping (mmio_fini).\n\nThis was recently observed during unsuccessful VF initialization:\n\n [ ] xe 0000:00:02.1: probe with driver xe failed with error -62\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747340 __xe_bo_unpin_map_no_vm (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747540 __xe_bo_unpin_map_no_vm (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747240 __xe_bo_unpin_map_no_vm (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747040 tiles_fini (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e746840 mmio_fini (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747f40 xe_bo_pinned_fini (16 bytes)\n [ ] xe 0000:00:02.1: DEVRES REL ffff88811e746b40 devm_drm_dev_init_release (16 bytes)\n [ ] xe 0000:00:02.1: [drm:drm_managed_release] drmres release begin\n [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef81640 __fini_relay (8 bytes)\n [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80d40 guc_ct_fini (8 bytes)\n [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80040 __drmm_mutex_release (8 bytes)\n [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80140 ggtt_fini_early (8 bytes)\n\nand this was leading to:\n\n [ ] BUG: unable to handle page fault for address: ffffc900058162a0\n [ ] #PF: supervisor write access in kernel mode\n [ ] #PF: error_code(0x0002) - not-present page\n [ ] Oops: Oops: 0002 [#1] SMP NOPTI\n [ ] Tainted: [W]=WARN\n [ ] Workqueue: xe-ggtt-wq ggtt_node_remove_work_func [xe]\n [ ] RIP: 0010:xe_ggtt_set_pte+0x6d/0x350 [xe]\n [ ] Call Trace:\n [ ]  <TASK>\n [ ]  xe_ggtt_clear+0xb0/0x270 [xe]\n [ ]  ggtt_node_remove+0xbb/0x120 [xe]\n [ ]  ggtt_node_remove_work_func+0x30/0x50 [xe]\n [ ]  process_one_work+0x22b/0x6f0\n [ ]  worker_thread+0x1e8/0x3d\n\nAdd managed-device action that will explicitly drain the workqueue\nwith all pending node removals prior to releasing MMIO/GSM mapping.\n\n(cherry picked from commit 89d2835c3680ab1938e22ad81b1c9f8c686bd391)"
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/xe: Proceso diferido de eliminaciones de nodos GGTT al desenrollar el dispositivo Mientras drenamos indirectamente nuestra cola de trabajo dedicada ggtt-&gt;wq que usamos para completar la eliminación asincrónica de algunos nodos GGTT, esto sucede como parte del desenrollado de managed-drm (ggtt_fini_early), que podría ser posterior al desenrollado de managed-device, donde ya podríamos desasignar nuestra asignación MMIO/GMS (mmio_fini). Esto se observó recientemente durante una inicialización de VF fallida: [ ] xe 0000:00:02.1: probe with driver xe failed with error -62 [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747340 __xe_bo_unpin_map_no_vm (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747540 __xe_bo_unpin_map_no_vm (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747240 __xe_bo_unpin_map_no_vm (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747040 tiles_fini (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e746840 mmio_fini (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e747f40 xe_bo_pinned_fini (16 bytes) [ ] xe 0000:00:02.1: DEVRES REL ffff88811e746b40 devm_drm_dev_init_release (16 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] drmres release begin [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef81640 __fini_relay (8 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80d40 guc_ct_fini (8 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80040 __drmm_mutex_release (8 bytes) [ ] xe 0000:00:02.1: [drm:drm_managed_release] REL ffff88810ef80140 ggtt_fini_early (8 bytes) and this was leading to: [ ] BUG: unable to handle page fault for address: ffffc900058162a0 [ ] #PF: supervisor write access in kernel mode [ ] #PF: error_code(0x0002) - not-present page [ ] Oops: Oops: 0002 [#1] SMP NOPTI [ ] Tainted: [W]=WARN [ ] Workqueue: xe-ggtt-wq ggtt_node_remove_work_func [xe] [ ] RIP: 0010:xe_ggtt_set_pte+0x6d/0x350 [xe] [ ] Call Trace: [ ]  [ ] xe_ggtt_clear+0xb0/0x270 [xe] [ ] ggtt_node_remove+0xbb/0x120 [xe] [ ] ggtt_node_remove_work_func+0x30/0x50 [xe] [ ] process_one_work+0x22b/0x6f0 [ ] worker_thread+0x1e8/0x3d Se agregó una acción de dispositivo administrado que drenará explícitamente la cola de trabajo con todas las eliminaciones de nodos pendientes antes de liberar la asignación de MMIO/GSM. (Seleccionado del commit 89d2835c3680ab1938e22ad81b1c9f8c686bd391)"
    }
  ],
  "affected": [
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      "affectedData": [
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          "product": "Linux",
          "defaultStatus": "unaffected",
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            },
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              "version": "0",
              "lessThan": "6.12",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.36",
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              "version": "6.15.5",
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            },
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              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
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            }
          ]
        }
      ]
    }
  ],
  "metrics": {
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        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
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          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
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    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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          "role": "CISA Coordinator",
          "version": "2.0.3"
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  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
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