CVE-2026-53190 (GCVE-0-2026-53190)

Vulnerability from cvelistv5 – Published: 2026-06-25 08:39 – Updated: 2026-06-25 08:39
VLAI
Title
drm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait()
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait() dma_fence_unwrap_for_each() internally calls dma_fence_unwrap_first() which does cursor->chain = dma_fence_get(head), taking an extra reference. On normal loop completion, dma_fence_unwrap_next() releases this via dma_fence_chain_walk() -> dma_fence_put(). When virtio_gpu_do_fence_wait() fails and the function returns early from inside the loop, the cursor->chain reference is never released. This is the only caller in the entire kernel that does an early return inside dma_fence_unwrap_for_each. Add dma_fence_put(itr.chain) before the early return.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: eba57fb5498f2858768321e64570caea188455b8 , < 898bd0ccfed71651b881660c5d20ad73b5203174 (git)
Affected: eba57fb5498f2858768321e64570caea188455b8 , < 73524e9f96a278b521f257a78a845c49eb522bc1 (git)
Affected: eba57fb5498f2858768321e64570caea188455b8 , < 8348567a6afb24e2c9cafe8a321162d0eebe1411 (git)
Affected: eba57fb5498f2858768321e64570caea188455b8 , < c0fffc874c264292e769f26194a2a5e66ce31810 (git)
Affected: eba57fb5498f2858768321e64570caea188455b8 , < 3f26bb732cc136ab20176697c92f32c9c84cb125 (git)
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Linux Linux Affected: 6.5
Unaffected: 0 , < 6.5 (semver)
Unaffected: 6.6.143 , ≤ 6.6.* (semver)
Unaffected: 6.12.94 , ≤ 6.12.* (semver)
Unaffected: 6.18.36 , ≤ 6.18.* (semver)
Unaffected: 7.0.13 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/virtio/virtgpu_submit.c"
          ],
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          "vendor": "Linux",
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            {
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              "version": "6.5"
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              "versionType": "semver"
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              "status": "unaffected",
              "version": "6.18.36",
              "versionType": "semver"
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            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.13",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait()\n\ndma_fence_unwrap_for_each() internally calls dma_fence_unwrap_first()\nwhich does cursor-\u003echain = dma_fence_get(head), taking an extra\nreference. On normal loop completion, dma_fence_unwrap_next()\nreleases this via dma_fence_chain_walk() -\u003e dma_fence_put().\n\nWhen virtio_gpu_do_fence_wait() fails and the function returns early\nfrom inside the loop, the cursor-\u003echain reference is never released.\nThis is the only caller in the entire kernel that does an early return\ninside dma_fence_unwrap_for_each.\n\nAdd dma_fence_put(itr.chain) before the early return."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-25T08:39:02.366Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/898bd0ccfed71651b881660c5d20ad73b5203174"
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          "url": "https://git.kernel.org/stable/c/73524e9f96a278b521f257a78a845c49eb522bc1"
        },
        {
          "url": "https://git.kernel.org/stable/c/8348567a6afb24e2c9cafe8a321162d0eebe1411"
        },
        {
          "url": "https://git.kernel.org/stable/c/c0fffc874c264292e769f26194a2a5e66ce31810"
        },
        {
          "url": "https://git.kernel.org/stable/c/3f26bb732cc136ab20176697c92f32c9c84cb125"
        }
      ],
      "title": "drm/virtio: fix dma_fence refcount leak on error in virtio_gpu_dma_fence_wait()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-53190",
    "datePublished": "2026-06-25T08:39:02.366Z",
    "dateReserved": "2026-06-09T07:44:35.390Z",
    "dateUpdated": "2026-06-25T08:39:02.366Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-07-02",
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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