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CVE-2026-23435 perf/x86: Move event pointer setup earlier in x86_pmu_enable()

🗓️ 03 Apr 2026 15:15:20Reported by LinuxType 
cvelist
 cvelist
🔗 www.cve.org👁 36 Views

CVE-2026-23435 perf/x86 moved event pointer setup earlier in x86_pmu_enable causing NULL pointer dereference in PMU NMI handler.

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/events/core.c"
    ],
    "versions": [
      {
        "version": "6b089028bff1f2ff9e0c62b8f1faca1a620e5d6e",
        "lessThan": "886fa869153917d902784098922defa20c3a2fe5",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7e772a93eb61cb6265bdd1c5bde17d0f2718b452",
        "lessThan": "c1dd1e2b722d3f1f2e4977dad8d1be78fdfb30cb",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "7e772a93eb61cb6265bdd1c5bde17d0f2718b452",
        "lessThan": "8d5fae6011260de209aaf231120e8146b14bc8e0",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "cf69b99805c263117305ac6dffbc85aaf9259d32",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "6.18.2",
        "lessThan": "6.18.20",
        "status": "affected",
        "versionType": "semver"
      },
      {
        "version": "6.17.13",
        "lessThan": "6.18",
        "status": "affected",
        "versionType": "semver"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "arch/x86/events/core.c"
    ],
    "versions": [
      {
        "version": "6.19",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.19",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.20",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.19.10",
        "lessThanOrEqual": "6.19.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]

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23 May 2026 16:04Current
EPSS0.00121
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