GHSA-CCV2-C43X-5R5P

Vulnerability from github – Published: 2026-08-15 06:32 – Updated: 2026-08-15 06:32
VLAI
Details

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

drm/radeon: fix memory leak in radeon_ring_restore() on lock failure

radeon_ring_restore() takes ownership of the data buffer allocated by radeon_ring_backup(). The caller (radeon_gpu_reset()) only frees it in the non-restore branch; in the restore branch it relies on radeon_ring_restore() to free it.

If radeon_ring_lock() fails, the function returned early without calling kvfree(data), leaking the ring backup buffer on every GPU reset that fails at the lock stage. During repeated GPU resets this causes cumulative kernel memory exhaustion.

Free data before returning the error.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-74416"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-15T06:22:43Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/radeon: fix memory leak in radeon_ring_restore() on lock failure\n\nradeon_ring_restore() takes ownership of the data buffer allocated by\nradeon_ring_backup(). The caller (radeon_gpu_reset()) only frees it in\nthe non-restore branch; in the restore branch it relies on\nradeon_ring_restore() to free it.\n\nIf radeon_ring_lock() fails, the function returned early without calling\nkvfree(data), leaking the ring backup buffer on every GPU reset that\nfails at the lock stage. During repeated GPU resets this causes\ncumulative kernel memory exhaustion.\n\nFree data before returning the error.",
  "id": "GHSA-ccv2-c43x-5r5p",
  "modified": "2026-08-15T06:32:33Z",
  "published": "2026-08-15T06:32:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74416"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/06dc892561f5a08b2493c34c8ec2cb94dea33159"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07c213f3499dd72e2922c1c73fe9ffea24874bef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c9ba32308c02c198c378fcdf06be9ffc3111147"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63912418f1fbb6456ea04bbcdf8f4d5090d23350"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82f1d6042611d45b8b9de423bbcb4e0ced9ec62b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/919e3e398bf301c6418dffdcd5e5c4fd9be39cf7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ccc42187fc2d0720947a63ce1b9e399d2c068ff4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/eecfb76129ebef7e3aa41e18a4668cd91dfc6267"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}



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