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CVE-2025-38689 x86/fpu: Fix NULL dereference in avx512_status()

🗓️ 04 Sep 2025 15:32:43Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 8 Views

Stop AVX-512 elapsed data for kernel threads to prevent NULL dereference in avx512_status.

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": "22aafe3bcb67472effdea1ccf0df20280192bbaf",
        "lessThan": "2ca887e81095b99d890a8878841f36f4920181e6",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "22aafe3bcb67472effdea1ccf0df20280192bbaf",
        "lessThan": "31cd31c9e17ece125aad27259501a2af69ccb020",
        "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": "6.16",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.16",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.16.2",
        "lessThanOrEqual": "6.16.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.17",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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