From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-cve-announce@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@kernel.org>
Subject: CVE-2026-52988: netfilter: nf_tables: join hook list via splice_list_rcu() in commit phase
Date: Wed, 24 Jun 2026 17:30:12 +0100 [thread overview]
Message-ID: <2026062443-CVE-2026-52988-d573@gregkh> (raw)
From: Greg Kroah-Hartman <gregkh@kernel.org>
Description
===========
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: join hook list via splice_list_rcu() in commit phase
Publish new hooks in the list into the basechain/flowtable using
splice_list_rcu() to ensure netlink dump list traversal via rcu is safe
while concurrent ruleset update is going on.
The Linux kernel CVE team has assigned CVE-2026-52988 to this issue.
Affected and fixed versions
===========================
Issue introduced in 5.8 with commit 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 and fixed in 7.0.10 with commit 1346be9379639c30877083b12747d4eacb83c24f
Issue introduced in 5.8 with commit 78d9f48f7f44431a25da2b46b3a8812f6ff2b981 and fixed in 7.1 with commit a6134e62dba2ea4f760b29d5226907f447c92400
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-2026-52988
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/nf_tables_api.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/1346be9379639c30877083b12747d4eacb83c24f
https://git.kernel.org/stable/c/a6134e62dba2ea4f760b29d5226907f447c92400
reply other threads:[~2026-06-24 16:33 UTC|newest]
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