netfilter: nf_queue: do not allow packet truncation below transport header offset
stable inclusion from stable-v5.10.135 commit 440dccd80f627e0e11ceb0429e4cdab61857d17e category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I5J9R4?from=project-issue CVE: CVE-2022-36946 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=440dccd80f627e0e11ceb0429e4cdab61857d17e -------------------------------- [ Upstream commit 99a63d36cb3ed5ca3aa6fcb64cffbeaf3b0fb164 ] Domingo Dirutigliano and Nicola Guerrera report kernel panic when sending nf_queue verdict with 1-byte nfta_payload attribute. The IP/IPv6 stack pulls the IP(v6) header from the packet after the input hook. If user truncates the packet below the header size, this skb_pull() will result in a malformed skb (skb->len < 0). Fixes: 7af4cc3f ("[NETFILTER]: Add "nfnetlink_queue" netfilter queue handler over nfnetlink") Reported-by: Domingo Dirutigliano <pwnzer0tt1@proton.me> Signed-off-by: Florian Westphal <fw@strlen.de> Reviewed-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Ziyang Xuan <william.xuanziyang@huawei.com> Reviewed-by: Yue Haibing <yuehaibing@huawei.com> Reviewed-by: Xiu Jianfeng <xiujianfeng@huawei.com> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com>
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