CVE-2025-68333
MEDIUM EPSS 0.7%
Published Dec 22, 20256mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Published Dec 22, 2025 6mo ago
Last Modified Jun 17, 2026 2w 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); <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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
0.7% percentile
Exploit & Patch Status
No Known Exploit
Patch Available
Weaknesses 1
CWE-667
Affected Products 8
References 3
- git.kernel.org https://git.kernel.org/stable/c/541959b2fadb832a7d0ceb95041dc52bdcf6bff7
- git.kernel.org https://git.kernel.org/stable/c/600b4379b9a7ba41340d652211fb29699da4c629
- git.kernel.org https://git.kernel.org/stable/c/a257e974210320ede524f340ffe16bf4bf0dda1e
Remediation
- git.kernel.org https://git.kernel.org/stable/c/541959b2fadb832a7d0ceb95041dc52bdcf6bff7
- git.kernel.org https://git.kernel.org/stable/c/600b4379b9a7ba41340d652211fb29699da4c629
- git.kernel.org https://git.kernel.org/stable/c/a257e974210320ede524f340ffe16bf4bf0dda1e