search for: nft_ctx_clear_vars

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2024 Sep 03
1
[Bug 1772] New: Double free corruption in libnftables
...Product: nftables Version: 1.0.x Hardware: x86_64 OS: Ubuntu Status: NEW Severity: normal Priority: P5 Component: nft Assignee: pablo at netfilter.org Reporter: nellexplorer at gmail.com When calling nft_ctx_clear_vars() and then nft_ctx_free() functions sequentially, double free corruption occurs. This is due to the fact that after calling xfree(ctx->vars) in the nft_ctx_clear_vars function, dereferencing the pointer does not occur. Steps to reproduce: 1. Call nft_ctx_clear_vars(); 2. Call nft_ctx_free()....