{"id":"DEBIAN-CVE-2026-72409","details":"In the Linux kernel, the following vulnerability has been resolved:  net: mvneta: re-enable percpu interrupt on resume  On Marvell MPIC platforms (Armada 370/XP/38x), mvneta uses a percpu IRQ disable/enable scheme for NAPI: the ISR (mvneta_percpu_isr) calls disable_percpu_irq() to mask the MPIC per-CPU interrupt and schedules NAPI poll, which calls enable_percpu_irq() on completion to unmask.  If suspend occurs while NAPI poll is pending (between disable_percpu_irq in the ISR and enable_percpu_irq in poll completion), the interrupt is never re-enabled:    1. mvneta_percpu_isr: disable_percpu_irq() + napi_schedule()      =\u003e MPIC masked, percpu_enabled cpumask bit cleared   2. NAPI poll does not complete before suspend proceeds      (on PREEMPT_RT this is highly likely since softirqs run in      ksoftirqd which gets frozen; on non-RT it can happen when      softirq processing is deferred to ksoftirqd)   3. mvneta_stop_dev =\u003e napi_disable(): cancels the pending poll      without executing the completion path   4. suspend_device_irqs =\u003e IRQCHIP_MASK_ON_SUSPEND: masks MPIC      (already masked, but records IRQS_SUSPENDED)   5. Resume: mpic_resume checks irq_percpu_is_enabled() =\u003e false      (bit was cleared in step 1) =\u003e skips unmask   6. mvneta_start_dev only restores device-level INTR_NEW_MASK,      does not touch the MPIC per-CPU mask  Result: MPIC per-CPU interrupt stays masked permanently. The NIC generates interrupts (INTR_NEW_CAUSE != 0) but the CPU never receives them, causing complete loss of network connectivity.  Fix by calling on_each_cpu(mvneta_percpu_enable) in the resume path to unconditionally unmask the MPIC per-CPU interrupt regardless of pre-suspend state.","modified":"2026-09-14T17:03:47.363436287Z","published":"2026-08-15T06:22:14.493Z","upstream":["CVE-2026-72409"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-72409"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.1.180-1"}]}],"versions":["6.1.106-1","6.1.106-2","6.1.106-3","6.1.112-1","6.1.115-1","6.1.119-1","6.1.123-1","6.1.124-1","6.1.128-1","6.1.129-1","6.1.133-1","6.1.135-1","6.1.137-1","6.1.139-1","6.1.140-1","6.1.147-1","6.1.148-1","6.1.153-1","6.1.158-1","6.1.159-1","6.1.162-1","6.1.164-1","6.1.170-1","6.1.170-2","6.1.170-3","6.1.172-1","6.1.174-1","6.1.176-1","6.1.177-1","6.1.27-1","6.1.37-1","6.1.38-1","6.1.38-2","6.1.38-2~bpo11+1","6.1.38-3","6.1.38-4","6.1.38-4~bpo11+1","6.1.52-1","6.1.55-1","6.1.55-1~bpo11+1","6.1.64-1","6.1.66-1","6.1.67-1","6.1.69-1","6.1.69-1~bpo11+1","6.1.76-1","6.1.76-1~bpo11+1","6.1.82-1","6.1.85-1","6.1.90-1","6.1.90-1~bpo11+1","6.1.94-1","6.1.94-1~bpo11+1","6.1.98-1","6.1.99-1"],"ecosystem_specific":{"urgency":"not 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