CVE-2024-26894 (GCVE-0-2024-26894)

Vulnerability from cvelistv5 – Published: 2024-04-17 10:27 – Updated: 2026-05-12 12:14
VLAI
Title
ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit()
Summary
In the Linux kernel, the following vulnerability has been resolved: ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit() After unregistering the CPU idle device, the memory associated with it is not freed, leading to a memory leak: unreferenced object 0xffff896282f6c000 (size 1024): comm "swapper/0", pid 1, jiffies 4294893170 hex dump (first 32 bytes): 00 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 8836a742): [<ffffffff993495ed>] kmalloc_trace+0x29d/0x340 [<ffffffff9972f3b3>] acpi_processor_power_init+0xf3/0x1c0 [<ffffffff9972d263>] __acpi_processor_start+0xd3/0xf0 [<ffffffff9972d2bc>] acpi_processor_start+0x2c/0x50 [<ffffffff99805872>] really_probe+0xe2/0x480 [<ffffffff99805c98>] __driver_probe_device+0x78/0x160 [<ffffffff99805daf>] driver_probe_device+0x1f/0x90 [<ffffffff9980601e>] __driver_attach+0xce/0x1c0 [<ffffffff99803170>] bus_for_each_dev+0x70/0xc0 [<ffffffff99804822>] bus_add_driver+0x112/0x210 [<ffffffff99807245>] driver_register+0x55/0x100 [<ffffffff9aee4acb>] acpi_processor_driver_init+0x3b/0xc0 [<ffffffff990012d1>] do_one_initcall+0x41/0x300 [<ffffffff9ae7c4b0>] kernel_init_freeable+0x320/0x470 [<ffffffff99b231f6>] kernel_init+0x16/0x1b0 [<ffffffff99042e6d>] ret_from_fork+0x2d/0x50 Fix this by freeing the CPU idle device after unregistering it.
Severity
6 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-06 16:56 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 3d339dcbb56d8d70c1b959aff87d74adc3a84eea , < d351bcadab6caa6d8ce7159ff4b77e2da35c09fa (git)
Affected: 3d339dcbb56d8d70c1b959aff87d74adc3a84eea , < ea96bf3f80625cddba1391a87613356b1b45716d (git)
Affected: 3d339dcbb56d8d70c1b959aff87d74adc3a84eea , < c2a30c81bf3cb9033fa9f5305baf7c377075e2e5 (git)
Affected: 3d339dcbb56d8d70c1b959aff87d74adc3a84eea , < 1cbaf4c793b0808532f4e7b40bc4be7cec2c78f2 (git)
Affected: 3d339dcbb56d8d70c1b959aff87d74adc3a84eea , < fad9bcd4d754cc689c19dc04d2c44b82c1a5d6c8 (git)
Affected: 3d339dcbb56d8d70c1b959aff87d74adc3a84eea , < 3d48e5be107429ff5d824e7f2a00d1b610d36fbc (git)
Affected: 3d339dcbb56d8d70c1b959aff87d74adc3a84eea , < 8d14a4d0afb49a5b8535d414c782bb334860e73e (git)
Affected: 3d339dcbb56d8d70c1b959aff87d74adc3a84eea , < cd5c2d0b09d5b6d3f0a7bbabe6761a4997e9dee9 (git)
Affected: 3d339dcbb56d8d70c1b959aff87d74adc3a84eea , < e18afcb7b2a12b635ac10081f943fcf84ddacc51 (git)
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Linux Linux Affected: 3.7
Unaffected: 0 , < 3.7 (semver)
Unaffected: 4.19.311 , ≤ 4.19.* (semver)
Unaffected: 5.4.273 , ≤ 5.4.* (semver)
Unaffected: 5.10.214 , ≤ 5.10.* (semver)
Unaffected: 5.15.153 , ≤ 5.15.* (semver)
Unaffected: 6.1.83 , ≤ 6.1.* (semver)
Unaffected: 6.6.23 , ≤ 6.6.* (semver)
Unaffected: 6.7.11 , ≤ 6.7.* (semver)
Unaffected: 6.8.2 , ≤ 6.8.* (semver)
Unaffected: 6.9 , ≤ * (original_commit_for_fix)
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Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem Affected: 0 , < * (custom)
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: processor_idle: Fix memory leak in acpi_processor_power_exit()\n\nAfter unregistering the CPU idle device, the memory associated with\nit is not freed, leading to a memory leak:\n\nunreferenced object 0xffff896282f6c000 (size 1024):\n  comm \"swapper/0\", pid 1, jiffies 4294893170\n  hex dump (first 32 bytes):\n    00 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace (crc 8836a742):\n    [\u003cffffffff993495ed\u003e] kmalloc_trace+0x29d/0x340\n    [\u003cffffffff9972f3b3\u003e] acpi_processor_power_init+0xf3/0x1c0\n    [\u003cffffffff9972d263\u003e] __acpi_processor_start+0xd3/0xf0\n    [\u003cffffffff9972d2bc\u003e] acpi_processor_start+0x2c/0x50\n    [\u003cffffffff99805872\u003e] really_probe+0xe2/0x480\n    [\u003cffffffff99805c98\u003e] __driver_probe_device+0x78/0x160\n    [\u003cffffffff99805daf\u003e] driver_probe_device+0x1f/0x90\n    [\u003cffffffff9980601e\u003e] __driver_attach+0xce/0x1c0\n    [\u003cffffffff99803170\u003e] bus_for_each_dev+0x70/0xc0\n    [\u003cffffffff99804822\u003e] bus_add_driver+0x112/0x210\n    [\u003cffffffff99807245\u003e] driver_register+0x55/0x100\n    [\u003cffffffff9aee4acb\u003e] acpi_processor_driver_init+0x3b/0xc0\n    [\u003cffffffff990012d1\u003e] do_one_initcall+0x41/0x300\n    [\u003cffffffff9ae7c4b0\u003e] kernel_init_freeable+0x320/0x470\n    [\u003cffffffff99b231f6\u003e] kernel_init+0x16/0x1b0\n    [\u003cffffffff99042e6d\u003e] ret_from_fork+0x2d/0x50\n\nFix this by freeing the CPU idle device after unregistering it."
        },
        {
          "lang": "es",
          "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ACPI: procesador_idle: corrige la p\u00e9rdida de memoria en acpi_processor_power_exit() Despu\u00e9s de cancelar el registro del dispositivo de CPU inactivo, la memoria asociada con \u00e9l no se libera, lo que genera una p\u00e9rdida de memoria: objeto sin referencia 0xffff896282f6c000 (tama\u00f1o 1024): comunicaci\u00f3n \"swapper/0\", pid 1, santiam\u00e9n 4294893170 volcado hexadecimal (primeros 32 bytes): 00 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00 ........... ..... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ retroceso (crc 8836a742): [] kmalloc_trace+ 0x29d/0x340 [] acpi_processor_power_init+0xf3/0x1c0 [] __acpi_processor_start+0xd3/0xf0 [] acpi_processor_start+0x2c/0x50 [] realmente_probe+0xe2/0x480 [] __driver_probe_device+ 0x78/0x160 [] driver_probe_device+0x1f/0x90 [] __driver_attach+0xce/0x1c0 [] bus_for_each_dev+0x70/0xc0 [] bus_add_driver+0x112/0x210 [] driver_register+ 0x55/0x100 [] acpi_processor_driver_init+0x3b/0xc0 [] do_one_initcall+0x41/0x300 [] kernel_init_freeable+0x320/0x470 [] kernel_init+0x16/0x1b0 [] ret_from_fork+ 0x2d/0x50 Solucione este problema liberando el dispositivo de CPU inactivo despu\u00e9s de cancelar su registro."
        }
      ],
      "id": "CVE-2024-26894",
      "lastModified": "2024-11-21T09:03:19.273",
      "metrics": {
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        "descriptions": [
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            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nACPI: processor_idle: Fix memory leak in acpi_processor_power_exit()\n\nAfter unregistering the CPU idle device, the memory associated with\nit is not freed, leading to a memory leak:\n\nunreferenced object 0xffff896282f6c000 (size 1024):\n  comm \"swapper/0\", pid 1, jiffies 4294893170\n  hex dump (first 32 bytes):\n    00 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00  ................\n    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................\n  backtrace (crc 8836a742):\n    [\u003cffffffff993495ed\u003e] kmalloc_trace+0x29d/0x340\n    [\u003cffffffff9972f3b3\u003e] acpi_processor_power_init+0xf3/0x1c0\n    [\u003cffffffff9972d263\u003e] __acpi_processor_start+0xd3/0xf0\n    [\u003cffffffff9972d2bc\u003e] acpi_processor_start+0x2c/0x50\n    [\u003cffffffff99805872\u003e] really_probe+0xe2/0x480\n    [\u003cffffffff99805c98\u003e] __driver_probe_device+0x78/0x160\n    [\u003cffffffff99805daf\u003e] driver_probe_device+0x1f/0x90\n    [\u003cffffffff9980601e\u003e] __driver_attach+0xce/0x1c0\n    [\u003cffffffff99803170\u003e] bus_for_each_dev+0x70/0xc0\n    [\u003cffffffff99804822\u003e] bus_add_driver+0x112/0x210\n    [\u003cffffffff99807245\u003e] driver_register+0x55/0x100\n    [\u003cffffffff9aee4acb\u003e] acpi_processor_driver_init+0x3b/0xc0\n    [\u003cffffffff990012d1\u003e] do_one_initcall+0x41/0x300\n    [\u003cffffffff9ae7c4b0\u003e] kernel_init_freeable+0x320/0x470\n    [\u003cffffffff99b231f6\u003e] kernel_init+0x16/0x1b0\n    [\u003cffffffff99042e6d\u003e] ret_from_fork+0x2d/0x50\n\nFix this by freeing the CPU idle device after unregistering it."
          },
          {
            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: ACPI: procesador_idle: corrige la p\u00e9rdida de memoria en acpi_processor_power_exit() Despu\u00e9s de cancelar el registro del dispositivo de CPU inactivo, la memoria asociada con \u00e9l no se libera, lo que genera una p\u00e9rdida de memoria: objeto sin referencia 0xffff896282f6c000 (tama\u00f1o 1024): comunicaci\u00f3n \"swapper/0\", pid 1, santiam\u00e9n 4294893170 volcado hexadecimal (primeros 32 bytes): 00 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00 ........... ..... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ retroceso (crc 8836a742): [] kmalloc_trace+ 0x29d/0x340 [] acpi_processor_power_init+0xf3/0x1c0 [] __acpi_processor_start+0xd3/0xf0 [] acpi_processor_start+0x2c/0x50 [] realmente_probe+0xe2/0x480 [] __driver_probe_device+ 0x78/0x160 [] driver_probe_device+0x1f/0x90 [] __driver_attach+0xce/0x1c0 [] bus_for_each_dev+0x70/0xc0 [] bus_add_driver+0x112/0x210 [] driver_register+ 0x55/0x100 [] acpi_processor_driver_init+0x3b/0xc0 [] do_one_initcall+0x41/0x300 [] kernel_init_freeable+0x320/0x470 [] kernel_init+0x16/0x1b0 [] ret_from_fork+ 0x2d/0x50 Solucione este problema liberando el dispositivo de CPU inactivo despu\u00e9s de cancelar su registro."
          }
        ],
        "id": "CVE-2024-26894",
        "lastModified": "2026-06-17T07:18:37.590",
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            }
          ],
          "title": "ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit()",
          "x_generator": {
            "engine": "bippy-1.2.0"
          }
        }
      },
      "cveMetadata": {
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "assignerShortName": "Linux",
        "cveId": "CVE-2024-26894",
        "datePublished": "2024-04-17T10:27:45.960Z",
        "dateReserved": "2024-02-19T14:20:24.186Z",
        "dateUpdated": "2026-05-11T20:06:28.578Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.