CVE-2025-68333 (GCVE-0-2025-68333)

Vulnerability from cvelistv5 – Published: 2025-12-22 16:14 – Updated: 2026-05-11 21:51
VLAI
Title
sched_ext: Fix possible deadlock in the deferred_irq_workfn()
Summary
In the Linux kernel, the following vulnerability has been resolved: sched_ext: Fix possible deadlock in the deferred_irq_workfn() For PREEMPT_RT=y kernels, the deferred_irq_workfn() is executed in the per-cpu irq_work/* task context and not disable-irq, if the rq returned by container_of() is current CPU's rq, the following scenarios may occur: lock(&rq->__lock); <Interrupt> lock(&rq->__lock); This commit use IRQ_WORK_INIT_HARD() to replace init_irq_work() to initialize rq->scx.deferred_irq_work, make the deferred_irq_workfn() is always invoked in hard-irq context.
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
Linux Linux Affected: 5b26f7b920f76b2b9cc398c252a9e35e44bf5bb9 , < 541959b2fadb832a7d0ceb95041dc52bdcf6bff7 (git)
Affected: 5b26f7b920f76b2b9cc398c252a9e35e44bf5bb9 , < 600b4379b9a7ba41340d652211fb29699da4c629 (git)
Affected: 5b26f7b920f76b2b9cc398c252a9e35e44bf5bb9 , < a257e974210320ede524f340ffe16bf4bf0dda1e (git)
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Linux Linux Affected: 6.12
Unaffected: 0 , < 6.12 (semver)
Unaffected: 6.12.68 , ≤ 6.12.* (semver)
Unaffected: 6.17.12 , ≤ 6.17.* (semver)
Unaffected: 6.18 , ≤ * (original_commit_for_fix)
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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.


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