CVE-2026-64429
CVE-2026-64429: 1 tracked advisory record across Red Hat. Compare source-reported impact, fixes and remediation.
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Red Hat
1 advisory- Advisory severityUnrated
Advisory [CVE-2026-64429] use raw_spinlock_t in the irq startup path
CVE-2026-64429Source published Source updated
In the Linux kernel, the following vulnerability has been resolved: gpio: eic-sprd: use raw_spinlock_t in the irq startup path sprd_eic_irq_unmask() enables the GPIO IRQ and then updates controller state through sprd_eic_update(), which takes sprd_eic->lock with spin_lock_irqsave(). The callback can be reached from irq_startup() while setting up a requested IRQ. That path is not sleepable, but on PREEMPT_RT a regular spinlock_t becomes a sleeping lock. This issue was found by our static analysis tool and then manually reviewed against the current tree. The grounded PoC kept the request_threaded_irq() -> __setup_irq() -> irq_startup() -> sprd_eic_irq_unmask() -> sprd_eic_update() carrier and used the original spin_lock_irqsave(&sprd_eic->lock) edge. Lockdep BUG: sleeping function called…
- Affected products in this advisory
- No product details extracted. Check the source bulletin.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- No fixed-version detail extracted. This does not mean no fix exists.
- Mitigation guidance
- No mitigation guidance extracted; consult the source.
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