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Date: Wed, 5 Jul 2023 14:09:08 -0300
From: Thadeu Lima de Souza Cascardo <>
Subject: CVE-2023-35001 - Linux kernel nf_tables nft_byteorder_eval OOB

It was discovered that it was possible to cause an out-of-bounds read or
write when processing an nft_byteorder expression.

Tanguy DUBROCA (@SidewayRE) from @Synacktiv working with Trend Micro's Zero
Day Initiative discovered that this vulnerability could be exploited for
Local Privilege Escalation. This has been reported as ZDI-CAN-20721, and
assigned CVE-2023-35001.

Exploiting it requires CAP_NET_ADMIN in any user or network namespace.

This bug was introduced by commit 96518518cc41 ("netfilter: add nftables"),
which is present since v3.13-rc1.

A fix has been sent to and is at

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