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CVE-2025-21817 (GCVE-0-2025-21817)

Vulnerability from cvelistv5 – Published: 2025-02-27 20:04 – Updated: 2026-09-07 15:44
VLAI
Title
block: mark GFP_NOIO around sysfs ->store()
Summary
In the Linux kernel, the following vulnerability has been resolved: block: mark GFP_NOIO around sysfs ->store() sysfs ->store is called with queue freezed, meantime we have several ->store() callbacks(update_nr_requests, wbt, scheduler) to allocate memory with GFP_KERNEL which may run into direct reclaim code path, then potential deadlock can be caused. Fix the issue by marking NOIO around sysfs ->store()
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 1645cd7fd42c236c952e9228badcac4fea1829ea , < a09280c39ea54080daf19cfaf4a3121a8d17d5cd (git)
Affected: 8985da5481562e96b95e94ed8e5cc9b6565eb82b , < 2566ce907e5d5db8a039647208e029ce559baa31 (git)
Affected: c99f66e4084a62a2cc401c4704a84328aeddc9ec , < 7c0be4ead1f8f5f8be0803f347de0de81e3b8e1c (git)
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Linux Linux Affected: 6.12.96 , < 6.12.109 (semver)
Affected: 6.13.2 , < 6.13.3 (semver)
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Show details on NVD website
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    "dateReserved": "2024-12-29T08:45:45.774Z",
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          },
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            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: block: mark GFP_NOIO around sysfs -\u0026gt;store() sysfs -\u0026gt;store se llama con la cola congelada, mientras tanto tenemos varias devoluciones de llamadas -\u0026gt;store() (update_nr_requests, wbt, scheduler) para asignar memoria con GFP_KERNEL que puede ejecutarse en una ruta de c\u00f3digo de recuperaci\u00f3n directa, lo que puede provocar un posible bloqueo. Solucione el problema marcando NOIO alrededor de sysfs -\u0026gt;store()"
          }
        ],
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                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
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}



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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

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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.


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