CVE-2025-68203 (GCVE-0-2025-68203)
Vulnerability from cvelistv5
Published
2025-12-16 13:48
Modified
2025-12-16 13:48
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: fix lock warning in amdgpu_userq_fence_driver_process Fix a potential deadlock caused by inconsistent spinlock usage between interrupt and process contexts in the userq fence driver. The issue occurs when amdgpu_userq_fence_driver_process() is called from both: - Interrupt context: gfx_v11_0_eop_irq() -> amdgpu_userq_fence_driver_process() - Process context: amdgpu_eviction_fence_suspend_worker() -> amdgpu_userq_fence_driver_force_completion() -> amdgpu_userq_fence_driver_process() In interrupt context, the spinlock was acquired without disabling interrupts, leaving it in {IN-HARDIRQ-W} state. When the same lock is acquired in process context, the kernel detects inconsistent locking since the process context acquisition would enable interrupts while holding a lock previously acquired in interrupt context. Kernel log shows: [ 4039.310790] inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage. [ 4039.310804] kworker/7:2/409 [HC0[0]:SC0[0]:HE1:SE1] takes: [ 4039.310818] ffff9284e1bed000 (&fence_drv->fence_list_lock){?...}-{3:3}, [ 4039.310993] {IN-HARDIRQ-W} state was registered at: [ 4039.311004] lock_acquire+0xc6/0x300 [ 4039.311018] _raw_spin_lock+0x39/0x80 [ 4039.311031] amdgpu_userq_fence_driver_process.part.0+0x30/0x180 [amdgpu] [ 4039.311146] amdgpu_userq_fence_driver_process+0x17/0x30 [amdgpu] [ 4039.311257] gfx_v11_0_eop_irq+0x132/0x170 [amdgpu] Fix by using spin_lock_irqsave()/spin_unlock_irqrestore() to properly manage interrupt state regardless of calling context. (cherry picked from commit ded3ad780cf97a04927773c4600823b84f7f3cc2)
References
Impacted products
Vendor Product Version
Linux Linux Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
Version: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1ad70a06d7e91c378b346a3718c81abb50a74b74",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            },
            {
              "lessThan": "6623c5f9fd877868fba133b4ae4dab0052e82dad",
              "status": "affected",
              "version": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_userq_fence.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThanOrEqual": "6.17.*",
              "status": "unaffected",
              "version": "6.17.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.18",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.17.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdgpu: fix lock warning in amdgpu_userq_fence_driver_process\n\nFix a potential deadlock caused by inconsistent spinlock usage\nbetween interrupt and process contexts in the userq fence driver.\n\nThe issue occurs when amdgpu_userq_fence_driver_process() is called\nfrom both:\n- Interrupt context: gfx_v11_0_eop_irq() -\u003e amdgpu_userq_fence_driver_process()\n- Process context: amdgpu_eviction_fence_suspend_worker() -\u003e\n  amdgpu_userq_fence_driver_force_completion() -\u003e amdgpu_userq_fence_driver_process()\n\nIn interrupt context, the spinlock was acquired without disabling\ninterrupts, leaving it in {IN-HARDIRQ-W} state. When the same lock\nis acquired in process context, the kernel detects inconsistent\nlocking since the process context acquisition would enable interrupts\nwhile holding a lock previously acquired in interrupt context.\n\nKernel log shows:\n[ 4039.310790] inconsistent {IN-HARDIRQ-W} -\u003e {HARDIRQ-ON-W} usage.\n[ 4039.310804] kworker/7:2/409 [HC0[0]:SC0[0]:HE1:SE1] takes:\n[ 4039.310818] ffff9284e1bed000 (\u0026fence_drv-\u003efence_list_lock){?...}-{3:3},\n[ 4039.310993] {IN-HARDIRQ-W} state was registered at:\n[ 4039.311004]   lock_acquire+0xc6/0x300\n[ 4039.311018]   _raw_spin_lock+0x39/0x80\n[ 4039.311031]   amdgpu_userq_fence_driver_process.part.0+0x30/0x180 [amdgpu]\n[ 4039.311146]   amdgpu_userq_fence_driver_process+0x17/0x30 [amdgpu]\n[ 4039.311257]   gfx_v11_0_eop_irq+0x132/0x170 [amdgpu]\n\nFix by using spin_lock_irqsave()/spin_unlock_irqrestore() to properly\nmanage interrupt state regardless of calling context.\n\n(cherry picked from commit ded3ad780cf97a04927773c4600823b84f7f3cc2)"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-12-16T13:48:31.102Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1ad70a06d7e91c378b346a3718c81abb50a74b74"
        },
        {
          "url": "https://git.kernel.org/stable/c/6623c5f9fd877868fba133b4ae4dab0052e82dad"
        }
      ],
      "title": "drm/amdgpu: fix lock warning in amdgpu_userq_fence_driver_process",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2025-68203",
    "datePublished": "2025-12-16T13:48:31.102Z",
    "dateReserved": "2025-12-16T13:41:40.255Z",
    "dateUpdated": "2025-12-16T13:48:31.102Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2025-68203\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-16T14:15:53.143\",\"lastModified\":\"2025-12-18T15:08:25.907\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\ndrm/amdgpu: fix lock warning in amdgpu_userq_fence_driver_process\\n\\nFix a potential deadlock caused by inconsistent spinlock usage\\nbetween interrupt and process contexts in the userq fence driver.\\n\\nThe issue occurs when amdgpu_userq_fence_driver_process() is called\\nfrom both:\\n- Interrupt context: gfx_v11_0_eop_irq() -\u003e amdgpu_userq_fence_driver_process()\\n- Process context: amdgpu_eviction_fence_suspend_worker() -\u003e\\n  amdgpu_userq_fence_driver_force_completion() -\u003e amdgpu_userq_fence_driver_process()\\n\\nIn interrupt context, the spinlock was acquired without disabling\\ninterrupts, leaving it in {IN-HARDIRQ-W} state. When the same lock\\nis acquired in process context, the kernel detects inconsistent\\nlocking since the process context acquisition would enable interrupts\\nwhile holding a lock previously acquired in interrupt context.\\n\\nKernel log shows:\\n[ 4039.310790] inconsistent {IN-HARDIRQ-W} -\u003e {HARDIRQ-ON-W} usage.\\n[ 4039.310804] kworker/7:2/409 [HC0[0]:SC0[0]:HE1:SE1] takes:\\n[ 4039.310818] ffff9284e1bed000 (\u0026fence_drv-\u003efence_list_lock){?...}-{3:3},\\n[ 4039.310993] {IN-HARDIRQ-W} state was registered at:\\n[ 4039.311004]   lock_acquire+0xc6/0x300\\n[ 4039.311018]   _raw_spin_lock+0x39/0x80\\n[ 4039.311031]   amdgpu_userq_fence_driver_process.part.0+0x30/0x180 [amdgpu]\\n[ 4039.311146]   amdgpu_userq_fence_driver_process+0x17/0x30 [amdgpu]\\n[ 4039.311257]   gfx_v11_0_eop_irq+0x132/0x170 [amdgpu]\\n\\nFix by using spin_lock_irqsave()/spin_unlock_irqrestore() to properly\\nmanage interrupt state regardless of calling context.\\n\\n(cherry picked from commit ded3ad780cf97a04927773c4600823b84f7f3cc2)\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/1ad70a06d7e91c378b346a3718c81abb50a74b74\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/6623c5f9fd877868fba133b4ae4dab0052e82dad\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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