Threats Tagged 'ghsa-9gxg-wj69-fwm2'
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Threats Tagged 'ghsa-9gxg-wj69-fwm2'
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A vulnerability in the Linux kernel's blk-cgroup subsystem involves improper handling of interrupt states in the function blkg_tryget_closest(). This can lead to deadlocks due to interrupts being enabled while a spinlock is held, allowing nested lock acquisition in softirq context. The issue arises when bio_set_dev() is called with interrupts disabled, but blkg_tryget_closest() unconditionally enables interrupts, causing inconsistent lock usage and potential deadlock. The problem was introduced after changes to locking mechanisms and requires saving and restoring the caller's IRQ state to prevent this condition. Join the discussion | GCVE Database | 10/18/2026, 18:32:05 UTC Added: 10/18/2026, 19:40:25 UTC |
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