linux-cve-announce - CVE-2024-56783: netfilter: nft_socket: remove WARN_ON

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Message-ID: <2025010807-CVE-2024-56783-4ed9@gregkh>
Date: Wed,  8 Jan 2025 18:52:09 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-56783: netfilter: nft_socket: remove WARN_ON_ONCE on maximum cgroup level

Description
===========

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nft_socket: remove WARN_ON_ONCE on maximum cgroup level

cgroup maximum depth is INT_MAX by default, there is a cgroup toggle to
restrict this maximum depth to a more reasonable value not to harm
performance. Remove unnecessary WARN_ON_ONCE which is reachable from
userspace.

The Linux kernel CVE team has assigned CVE-2024-56783 to this issue.


Affected and fixed versions
===========================

	Issue introduced in 6.1.112 with commit ace0db36b4a1db07a48517c4f04488d1cd05e5f5 and fixed in 6.1.120 with commit 7064a6daa4a700a298fe3aee11dea296bfe59fc4
	Issue introduced in 6.6.53 with commit f07e28e4c623168f9fa5c00f518bd341d4014aa6 and fixed in 6.6.66 with commit 2f9bec0a749eb646b384fde0c7b7c24687b2ffae
	Issue introduced in 6.11 with commit 7f3287db654395f9c5ddd246325ff7889f550286 and fixed in 6.12.5 with commit e227c042580ab065edc610c9ddc9bea691e6fc4d
	Issue introduced in 6.11 with commit 7f3287db654395f9c5ddd246325ff7889f550286 and fixed in 6.13-rc2 with commit b7529880cb961d515642ce63f9d7570869bbbdc3
	Issue introduced in 6.10.12 with commit ecc5368315af8473fe052cb928e53756dbfe4403

Please see https://www.kernel.org for a full list of currently supported
kernel versions by the kernel community.

Unaffected versions might change over time as fixes are backported to
older supported kernel versions.  The official CVE entry at
	https://cve.org/CVERecord/?id=CVE-2024-56783
will be updated if fixes are backported, please check that for the most
up to date information about this issue.


Affected files
==============

The file(s) affected by this issue are:
	net/netfilter/nft_socket.c


Mitigation
==========

The Linux kernel CVE team recommends that you update to the latest
stable kernel version for this, and many other bugfixes.  Individual
changes are never tested alone, but rather are part of a larger kernel
release.  Cherry-picking individual commits is not recommended or
supported by the Linux kernel community at all.  If however, updating to
the latest release is impossible, the individual changes to resolve this
issue can be found at these commits:
	https://git.kernel.org/stable/c/7064a6daa4a700a298fe3aee11dea296bfe59fc4
	https://git.kernel.org/stable/c/2f9bec0a749eb646b384fde0c7b7c24687b2ffae
	https://git.kernel.org/stable/c/e227c042580ab065edc610c9ddc9bea691e6fc4d
	https://git.kernel.org/stable/c/b7529880cb961d515642ce63f9d7570869bbbdc3