linux-cve-announce - CVE-2024-26581: netfilter: nft_set_rbtree: skip end interval element from gc

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Message-ID: <2024022024-uniquely-recluse-d893@gregkh>
Date: Tue, 20 Feb 2024 13:54:23 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2024-26581: netfilter: nft_set_rbtree: skip end interval element from gc

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

netfilter: nft_set_rbtree: skip end interval element from gc

rbtree lazy gc on insert might collect an end interval element that has
been just added in this transactions, skip end interval elements that
are not yet active.

The Linux kernel CVE team has assigned CVE-2024-26581 to this issue.


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

	Issue introduced in 6.1.43 with commit 89a4d1a89751 and fixed in 6.1.78 with commit 1296c110c5a0
	Issue introduced in 6.5 with commit f718863aca46 and fixed in 6.6.17 with commit b734f7a47aeb
	Issue introduced in 6.5 with commit f718863aca46 and fixed in 6.7.5 with commit 6eb14441f106
	Issue introduced in 6.5 with commit f718863aca46 and fixed in 6.8-rc4 with commit 60c0c230c6f0

Please see https://www.kernel.org or 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-2024-26581
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_set_rbtree.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/1296c110c5a0
	https://git.kernel.org/stable/c/b734f7a47aeb
	https://git.kernel.org/stable/c/6eb14441f106
	https://git.kernel.org/stable/c/60c0c230c6f0