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Date: Thu, 9 Jul 2026 10:05:34 +0200
From: Florian Westphal <fw@strlen.de>
To: Omkhar Arasaratnam <omkhar@linkedin.com>
Cc: "netfilter-devel@vger.kernel.org" <netfilter-devel@vger.kernel.org>,
	"pablo@netfilter.org" <pablo@netfilter.org>,
	"fmancera@suse.de" <fmancera@suse.de>
Subject: Re: [PATCH nft] parser_json: initialize geneve options list for
 empty tunnel array
Message-ID: <ak9WRGrU4SjDxMEF@strlen.de>
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Omkhar Arasaratnam <omkhar@linkedin.com> wrote:
> The attached patch fixes a crash in the JSON parser. A geneve tunnel object with an empty options array ("tunnel": []) leaves obj->tunnel.geneve_opts uninitialized; obj_tunnel_add_opts() then walks the uninitialized list head and nft -j crashes (SEGV in nftnl_tunnel_opt_geneve_set via near-NULL deref).

Applied.  I moved the crasher to testcases/bogons.