Vulnerability Information
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Vulnerability Title
riscv: kexec: Avoid deadlock in kexec crash path
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: riscv: kexec: Avoid deadlock in kexec crash path If the kexec crash code is called in the interrupt context, the machine_kexec_mask_interrupts() function will trigger a deadlock while trying to acquire the irqdesc spinlock and then deactivate irqchip in irq_set_irqchip_state() function. Unlike arm64, riscv only requires irq_eoi handler to complete EOI and keeping irq_set_irqchip_state() will only leave this possible deadlock without any use. So we simply remove it.
CVSS Information
N/A
Vulnerability Type
N/A
Vulnerability Title
Linux kernel 安全漏洞
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel 存在安全漏洞，该漏洞源于riscv:kexec模块中如果kexec crash代码某些位置被调用，machine_kexec_mask_interrupts()函数在尝试获取irqdesc自旋锁时将触发死锁。
CVSS Information
N/A
Vulnerability Type
N/A