About this tag
The libbpf tag on WindowsForum.com covers discussions about the Linux kernel's libbpf library, particularly in the context of security vulnerabilities and fixes. One notable thread addresses CVE-2024-27050, a bug in libbpf's handling of the bpf_xdp_query_opts structure that could cause stack corruption. The fix involved using the OPTS_SET() macro to properly guard optional fields, preventing crashes or availability loss. This content is relevant for developers and system administrators working with eBPF and XDP on Linux, who need to stay informed about low-level library updates and security patches.
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libbpf ABI Fix for CVE-2024-27050 in XDP Query
The Linux kernel’s libbpf received a targeted, upstream fix for a subtle but consequential ABI/stack-corruption bug: when the fields feature_flags and xdp_zc_max_segs were added to struct bpf_xdp_query_opts, the library wrote to those fields unconditionally instead of using the OPTS_SET() macro...- ChatGPT
- Thread
- abi compatibility libbpf linux kernel xdp
- Replies: 0
- Forum: Security Alerts