CVE-2025-71180 (GCVE-0-2025-71180)

Vulnerability from cvelistv5 – Published: 2026-01-31 11:38 – Updated: 2026-02-09 08:36
VLAI?
Title
counter: interrupt-cnt: Drop IRQF_NO_THREAD flag
Summary
In the Linux kernel, the following vulnerability has been resolved: counter: interrupt-cnt: Drop IRQF_NO_THREAD flag An IRQ handler can either be IRQF_NO_THREAD or acquire spinlock_t, as CONFIG_PROVE_RAW_LOCK_NESTING warns: ============================= [ BUG: Invalid wait context ] 6.18.0-rc1+git... #1 ----------------------------- some-user-space-process/1251 is trying to lock: (&counter->events_list_lock){....}-{3:3}, at: counter_push_event [counter] other info that might help us debug this: context-{2:2} no locks held by some-user-space-process/.... stack backtrace: CPU: 0 UID: 0 PID: 1251 Comm: some-user-space-process 6.18.0-rc1+git... #1 PREEMPT Call trace: show_stack (C) dump_stack_lvl dump_stack __lock_acquire lock_acquire _raw_spin_lock_irqsave counter_push_event [counter] interrupt_cnt_isr [interrupt_cnt] __handle_irq_event_percpu handle_irq_event handle_simple_irq handle_irq_desc generic_handle_domain_irq gpio_irq_handler handle_irq_desc generic_handle_domain_irq gic_handle_irq call_on_irq_stack do_interrupt_handler el0_interrupt __el0_irq_handler_common el0t_64_irq_handler el0t_64_irq ... and Sebastian correctly points out. Remove IRQF_NO_THREAD as an alternative to switching to raw_spinlock_t, because the latter would limit all potential nested locks to raw_spinlock_t only.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a55ebd47f21f6f0472766fb52c973849e31d1466 , < ef668c9a2261ec9287faba6e6ef05a98b391aa2b (git)
Affected: a55ebd47f21f6f0472766fb52c973849e31d1466 , < 51d2e5d6491447258cb39ff1deb93df15d3c23cb (git)
Affected: a55ebd47f21f6f0472766fb52c973849e31d1466 , < 1c5a3175aecf82cd86dfcbef2a23e8b26d8d8e7c (git)
Affected: a55ebd47f21f6f0472766fb52c973849e31d1466 , < 49a66829dd3653695e60d7cae13521d131362fcd (git)
Affected: a55ebd47f21f6f0472766fb52c973849e31d1466 , < 425886b1f8304621b3f16632b274357067d5f13f (git)
Affected: a55ebd47f21f6f0472766fb52c973849e31d1466 , < 23f9485510c338476b9735d516c1d4aacb810d46 (git)
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    Linux Linux Affected: 5.13
Unaffected: 0 , < 5.13 (semver)
Unaffected: 5.15.198 , ≤ 5.15.* (semver)
Unaffected: 6.1.161 , ≤ 6.1.* (semver)
Unaffected: 6.6.121 , ≤ 6.6.* (semver)
Unaffected: 6.12.66 , ≤ 6.12.* (semver)
Unaffected: 6.18.6 , ≤ 6.18.* (semver)
Unaffected: 6.19 , ≤ * (original_commit_for_fix)
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        "dateUpdated": "2026-02-09T08:36:04.225Z",
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    "dateReserved": "2026-01-31T11:36:51.183Z",
    "dateUpdated": "2026-02-09T08:36:04.225Z",
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Remove IRQF_NO_THREAD as an\\nalternative to switching to raw_spinlock_t, because the latter would limit\\nall potential nested locks to raw_spinlock_t only.\"},{\"lang\":\"es\",\"value\":\"En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\\n\\ncounter: interrupt-cnt: Eliminar el flag IRQF_NO_THREAD\\n\\nUn manejador de IRQ puede ser IRQF_NO_THREAD o adquirir un spinlock_t, como advierte CONFIG_PROVE_RAW_LOCK_NESTING:\\n=============================\\n[ BUG: Contexto de espera inv\u00e1lido ]\\n6.18.0-rc1+git... #1\\n-----------------------------\\nsome-user-space-process/1251 est\u00e1 intentando bloquear:\\n(\u0026amp;counter-\u0026gt;events_list_lock){....}-{3:3}, at: counter_push_event [counter]\\notra informaci\u00f3n que podr\u00eda ayudarnos a depurar esto:\\ncontext-{2:2}\\nning\u00fan bloqueo mantenido por some-user-space-process/....\\nrastreo de pila:\\nCPU: 0 UID: 0 PID: 1251 Comm: some-user-space-process 6.18.0-rc1+git... #1 PREEMPT\\nTraza de llamada:\\n show_stack (C)\\n dump_stack_lvl\\n dump_stack\\n __lock_acquire\\n lock_acquire\\n _raw_spin_lock_irqsave\\n counter_push_event [counter]\\n interrupt_cnt_isr [interrupt_cnt]\\n __handle_irq_event_percpu\\n handle_irq_event\\n handle_simple_irq\\n handle_irq_desc\\n generic_handle_domain_irq\\n gpio_irq_handler\\n handle_irq_desc\\n generic_handle_domain_irq\\n gic_handle_irq\\n call_on_irq_stack\\n do_interrupt_handler\\n el0_interrupt\\n __el0_irq_handler_common\\n el0t_64_irq_handler\\n el0t_64_irq\\n\\n... y Sebastian se\u00f1ala correctamente. 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}


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  • 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.
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