CVE-2025-68333 - sched_ext: Fix possible deadlock in the deferred_irq_workfn()

CVE-2025-68333 - sched_ext: Fix possible deadlock in the deferred_irq_workfn()

https://cvefeed.io/rssfeed/latest.atom / Mon, 12/22/2025 - 19:54
CVE ID : CVE-2025-68333
Published : Dec. 22, 2025, 5:16 p.m. | 1 hour, 34 minutes ago
Description : 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); 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: 0.0 | NA
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