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CVE-2022-50425 x86/fpu: Fix copy_xstate_to_uabi() to copy init states correctly

🗓️ 01 Oct 2025 11:42:04Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Fixes copy_xstate_to_uabi to zero features absent in both states and enables compacted xsave before XCOMP_BV.

Related
Affected
Refs
[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/x86/kernel/fpu/xstate.c"
    ],
    "versions": [
      {
        "version": "2308ee57d93d896618dd65c996429c9d3e469fe0",
        "lessThan": "6ff29642fd28965a8f8d6d326ac91bf6075f3113",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "2308ee57d93d896618dd65c996429c9d3e469fe0",
        "lessThan": "471f0aa7fa64e23766a1473b32d9ec3f0718895a",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/x86/kernel/fpu/xstate.c"
    ],
    "versions": [
      {
        "version": "5.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "5.16",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.0.7",
        "lessThanOrEqual": "6.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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