{
  "cveId": "CVE-2026-80611",
  "url": "https://patchblox.com/security/cve/CVE-2026-80611",
  "summary": "CVE-2026-80611 is fixed in 38 products on 1 platform, first by ALAS2023-2026-2057, released August 17, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "ACPI: processor_idle: Mark LPI enter functions as __cpuidle",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  ACPI: processor_idle: Mark LPI enter functions as __cpuidle  When function tracing or Kprobes is enabled, entering an ACPI Low Power Idle (LPI) state triggers the following RCU splat:    RCU not on for: acpi_idle_lpi_enter\u002B0x4/0xd8   WARNING: CPU: 8 PID: 0 at include/linux/trace_recursion.h:162 function_trace_call\u002B0x1e8/0x228  The acpi_idle_lpi_enter() function is invoked within the cpuidle path after RCU has already been disabled for the current local CPU. Consequently, ftrace\u0027s function_trace_call() expects RCU to be actively watching before recording trace data, emitting a warning if it is not.  Fix this by annotating acpi_idle_lpi_enter(), the generic __weak stub, and the RISC-V implementation of acpi_processor_ffh_lpi_enter() with __cpuidle. This moves these functions into the \u0027.cpuidle.text\u0027 section, implicitly disabling ftrace instrumentation (notrace) along this sensitive path and preventing trace-induced RCU warnings during idle entry.",
  "published": "2026-08-17T09:00:00Z",
  "severity": "Moderate",
  "cvss": 5.5,
  "epss": 0.00173,
  "epssPercentile": 0.0679,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80611",
  "fixes": [
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      "fix": "ALAS2023-2026-2057",
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  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
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}