CVE-2026-52950 drm/xe/dma-buf: fix UAF with retry loop

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/xe/xe_dma_buf.c"
    ],
    "versions": [
      {
        "version": "eb289a5f6cc668853f9b2ea6aca04afe58ed11c7",
        "lessThan": "39fdac6be02eb7c3460518c1c4085f75f935c4ce",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eb289a5f6cc668853f9b2ea6aca04afe58ed11c7",
        "lessThan": "827062952ed9bdf4220466c1f05ce452d04bdedf",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "eb289a5f6cc668853f9b2ea6aca04afe58ed11c7",
        "lessThan": "155a372a1cc50fa93387c5d3cdfd614a61e1afd1",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/xe/xe_dma_buf.c"
    ],
    "versions": [
      {
        "version": "6.18",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.18",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.33",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.10",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]