Disable unprivileged access to BPF syscalls to prevent denial of service and privilege escalation via a) potential speculative execution side-channel-attacks on unmitigated hardware[0] or b) unvalidated memory access in ringbuffer helper functions[1]. Fixes: CVE-2021-4204, CVE-2022-23222 [0] https://ebpf.io/summit-2021-slides/eBPF_Summit_2021-Keynote-Daniel_Borkmann-BPF_and_Spectre.pdf [1] https://www.openwall.com/lists/oss-security/2022/01/13/1 |
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manual | ||
varlistentry-fixer.rb | ||
xmlformat.conf |