{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a36a7fecfe6071732075ad5aa31196adce13181b"
            },
            {
              "fixed": "10f675902a5fc88ccfe34bb8aa37de50806b03b1"
            },
            {
              "fixed": "5b6165d7ec38477e8cfa41bfa464959957953822"
            },
            {
              "fixed": "8bbe4dd7964552f74c271c3a8d95a4331a8ab5f9"
            },
            {
              "fixed": "956ca5d72c76504824c8eb601879da9476973e15"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.8.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80611.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: processor_idle: Mark LPI enter functions as __cpuidle\n\nWhen function tracing or Kprobes is enabled, entering an ACPI Low\nPower Idle (LPI) state triggers the following RCU splat:\n\n  RCU not on for: acpi_idle_lpi_enter+0x4/0xd8\n  WARNING: CPU: 8 PID: 0 at include/linux/trace_recursion.h:162 function_trace_call+0x1e8/0x228\n\nThe acpi_idle_lpi_enter() function is invoked within the cpuidle\npath after RCU has already been disabled for the current local CPU.\nConsequently, ftrace's function_trace_call() expects RCU to be\nactively watching before recording trace data, emitting a warning\nif it is not.\n\nFix this by annotating acpi_idle_lpi_enter(), the generic __weak\nstub, and the RISC-V implementation of acpi_processor_ffh_lpi_enter()\nwith __cpuidle. This moves these functions into the '.cpuidle.text'\nsection, implicitly disabling ftrace instrumentation (notrace) along\nthis sensitive path and preventing trace-induced RCU warnings during\nidle entry.",
  "id": "CVE-2026-80611",
  "modified": "2026-08-30T03:30:22.306685621Z",
  "published": "2026-08-28T06:48:33.934Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/10f675902a5fc88ccfe34bb8aa37de50806b03b1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5b6165d7ec38477e8cfa41bfa464959957953822"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8bbe4dd7964552f74c271c3a8d95a4331a8ab5f9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/956ca5d72c76504824c8eb601879da9476973e15"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/80xxx/CVE-2026-80611.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80611"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "ACPI: processor_idle: Mark LPI enter functions as __cpuidle"
}