CVE-2024-42253
CSIRTS triage
- What
- Race condition in pca953x GPIO driver irq_bus_sync_unlock function.
- Who is affected
- Systems running Linux kernel with pca953x GPIO controller driver.
- Urgency
- Medium severity; not exploited; synchronization issue in interrupt handling.
- Action
- Apply Linux kernel patch addressing CVE-2024-42253 to fix the race condition.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.17% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 7% of all EPSS-scored CVEs.
Advisory coverage (1)
- mediumCVE-2024-42253: gpio: pca953x: fix pca953x_irq_bus_sync_unlock racemsrc · 2026-08-06
External references
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[](https://www.csirts.com/cve/CVE-2024-42253)