linux-cve-announce - CVE-2025-21848: nfp: bpf: Add check for nfp_app_ctrl_msg

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Message-ID: <2025031212-CVE-2025-21848-30e8@gregkh>
Date: Wed, 12 Mar 2025 10:42:14 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2025-21848: nfp: bpf: Add check for nfp_app_ctrl_msg_alloc()

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

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

nfp: bpf: Add check for nfp_app_ctrl_msg_alloc()

Add check for the return value of nfp_app_ctrl_msg_alloc() in
nfp_bpf_cmsg_alloc() to prevent null pointer dereference.

The Linux kernel CVE team has assigned CVE-2025-21848 to this issue.


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

	Issue introduced in 4.16 with commit ff3d43f7568c82b335d7df2d40a31447c3fce10c and fixed in 6.1.130 with commit 1358d8e07afdf21d49ca6f00c56048442977e00a
	Issue introduced in 4.16 with commit ff3d43f7568c82b335d7df2d40a31447c3fce10c and fixed in 6.6.80 with commit 29ccb1e4040da6ff02b7e64efaa2f8e6bf06020d
	Issue introduced in 4.16 with commit ff3d43f7568c82b335d7df2d40a31447c3fce10c and fixed in 6.12.17 with commit 897c32cd763fd11d0b6ed024c52f44d2475bb820
	Issue introduced in 4.16 with commit ff3d43f7568c82b335d7df2d40a31447c3fce10c and fixed in 6.13.5 with commit bd97f60750bb581f07051f98e31dfda59d3a783b
	Issue introduced in 4.16 with commit ff3d43f7568c82b335d7df2d40a31447c3fce10c and fixed in 6.14-rc4 with commit 878e7b11736e062514e58f3b445ff343e6705537

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-2025-21848
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:
	drivers/net/ethernet/netronome/nfp/bpf/cmsg.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/1358d8e07afdf21d49ca6f00c56048442977e00a
	https://git.kernel.org/stable/c/29ccb1e4040da6ff02b7e64efaa2f8e6bf06020d
	https://git.kernel.org/stable/c/897c32cd763fd11d0b6ed024c52f44d2475bb820
	https://git.kernel.org/stable/c/bd97f60750bb581f07051f98e31dfda59d3a783b
	https://git.kernel.org/stable/c/878e7b11736e062514e58f3b445ff343e6705537