Vulnerability Information
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Vulnerability Title
bpf: Fix bpf_get_smp_processor_id() on !CONFIG_SMP
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: bpf: Fix bpf_get_smp_processor_id() on !CONFIG_SMP On x86-64 calling bpf_get_smp_processor_id() in a kernel with CONFIG_SMP disabled can trigger the following bug, as pcpu_hot is unavailable: [ 8.471774] BUG: unable to handle page fault for address: 00000000936a290c [ 8.471849] #PF: supervisor read access in kernel mode [ 8.471881] #PF: error_code(0x0000) - not-present page Fix by inlining a return 0 in the !CONFIG_SMP case.
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，该漏洞源于在bpf模块中，当在不支持SMP的x86-64内核上调用bpf_get_smp_processor_id时，由于pcpu_hot不可用，会触发page fault错误，导致内核崩溃或不稳定，影响内核的正常运行和程序的执行。
CVSS Information
N/A
Vulnerability Type
N/A