Entreprise française de cybersécurité depuis 2004
☎ 03 60 47 09 81 - info@securiteinfo.com
☎ 03 60 47 09 81 - info@securiteinfo.com
In the Linux kernel, the following vulnerability has been resolved:irqchip/gic-v3-its: Don't enable interrupts in its_irq_set_vcpu_affinity()The following call-chain leads to enabling interrupts in a nested interruptdisabled section:irq_set_vcpu_affinity() irq_get_desc_lock() raw_spin_lock_irqsave() <--- Disable interrupts its_irq_set_vcpu_affinity() guard(raw_spinlock_irq) <--- Enables interrupts when leaving the guard() irq_put_desc_unlock() <--- Warns because interrupts are enabledThis was broken in commit b97e8a2f7130, which replaced the originalraw_spin_[un]lock() pair with guard(raw_spinlock_irq).Fix the issue by using guard(raw_spinlock).[ tglx: Massaged change log ]
No PoCs from references.
- https://github.com/w4zu/Debian_security