💣Exploit CVE-2024-56768 - Linux Kernel BPF privileges escalation vulnerability

[Maksim]

CVE ID : CVE-2024-56768
Published : Jan. 6, 2025, 5:15 p.m. | 48 minutes ago
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.
Severity: 0.0 | NA
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