FKIE_CVE-2025-40110

Vulnerability from fkie_nvd - Published: 2025-11-12 02:15 - Updated: 2025-11-12 16:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/vmwgfx: Fix a null-ptr access in the cursor snooper Check that the resource which is converted to a surface exists before trying to use the cursor snooper on it. vmw_cmd_res_check allows explicit invalid (SVGA3D_INVALID_ID) identifiers because some svga commands accept SVGA3D_INVALID_ID to mean "no surface", unfortunately functions that accept the actual surfaces as objects might (and in case of the cursor snooper, do not) be able to handle null objects. Make sure that we validate not only the identifier (via the vmw_cmd_res_check) but also check that the actual resource exists before trying to do something with it. Fixes unchecked null-ptr reference in the snooping code.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/13c9e4ed125e19484234c960efe5ac9c55119523
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/299cfb5a7deabdf9ecd30071755672af0aced5eb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5ac2c0279053a2c5265d46903432fb26ae2d0da2
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b6fca0a07989f361ceda27cb2d09c555d4d4a964
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/vmwgfx: Fix a null-ptr access in the cursor snooper\n\nCheck that the resource which is converted to a surface exists before\ntrying to use the cursor snooper on it.\n\nvmw_cmd_res_check allows explicit invalid (SVGA3D_INVALID_ID) identifiers\nbecause some svga commands accept SVGA3D_INVALID_ID to mean \"no surface\",\nunfortunately functions that accept the actual surfaces as objects might\n(and in case of the cursor snooper, do not) be able to handle null\nobjects. Make sure that we validate not only the identifier (via the\nvmw_cmd_res_check) but also check that the actual resource exists before\ntrying to do something with it.\n\nFixes unchecked null-ptr reference in the snooping code."
    }
  ],
  "id": "CVE-2025-40110",
  "lastModified": "2025-11-12T16:19:12.850",
  "metrics": {},
  "published": "2025-11-12T02:15:32.900",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/13c9e4ed125e19484234c960efe5ac9c55119523"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/299cfb5a7deabdf9ecd30071755672af0aced5eb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5ac2c0279053a2c5265d46903432fb26ae2d0da2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b6fca0a07989f361ceda27cb2d09c555d4d4a964"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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