sched_ext: Fix possible deadlock in the deferred_irq_workfn() (Linux Linux)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.11 % · percentile 1 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- Linux
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-667 — Improper Locking
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2025-204718
- GCVE · GCVE-0-2025-68333
CERT-FR advisories
- CERTFR-2026-AVI-0421 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0397 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0371 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0331 — Multiples vulnérabilités dans le noyau Linux d'Ubuntu · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0326 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0316 — Multiples vulnérabilités dans les produits VMware · cert.ssi.gouv.fr
- CERTFR-2026-AVI-0166 — Multiples vulnérabilités dans le noyau Linux de Debian · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.12 < 6.12.68cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*≥ 6.13 < 6.17.12cpe:2.3:o:linux:linux_kernel:6.18:rc1:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.18:rc2:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.18:rc3:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.18:rc4:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.18:rc5:*:*:*:*:*:*cpe:2.3:o:linux:linux_kernel:6.18:rc6:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Linux · Linux | affected 5b26f7b920f76b2b9cc398c252a9e35e44bf5bb9 < 541959b2fadb832a7d0ceb95041dc52bdcf6bff7 ; affected 5b26f7b920f76b2b9cc398c252a9e35e44bf5bb9 < 600b4379b9a7ba41340d652211fb29699da4c629 ; affected 5b26f7b920f76b2b9cc398c252a9e35e44bf5bb9 < a257e974210320ede524f340ffe16bf4bf0dda1e |
| Linux · Linux | affected 6.12 ; unaffected 0 < 6.12 ; unaffected 6.12.68 ≤ 6.12.* ; unaffected 6.17.12 ≤ 6.17.* ; unaffected 6.18 ≤ * |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |