linux-cve-announce - CVE-2023-53030: octeontx2-pf: Avoid use of GFP

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Message-ID: <2025032720-CVE-2023-53030-ba50@gregkh>
Date: Thu, 27 Mar 2025 17:44:17 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: CVE-2023-53030: octeontx2-pf: Avoid use of GFP_KERNEL in atomic context

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

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

octeontx2-pf: Avoid use of GFP_KERNEL in atomic context

Using GFP_KERNEL in preemption disable context, causing below warning
when CONFIG_DEBUG_ATOMIC_SLEEP is enabled.

[   32.542271] BUG: sleeping function called from invalid context at include/linux/sched/mm.h:274
[   32.550883] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper/0
[   32.558707] preempt_count: 1, expected: 0
[   32.562710] RCU nest depth: 0, expected: 0
[   32.566800] CPU: 3 PID: 1 Comm: swapper/0 Tainted: G        W          6.2.0-rc2-00269-gae9dcb91c606 #7
[   32.576188] Hardware name: Marvell CN106XX board (DT)
[   32.581232] Call trace:
[   32.583670]  dump_backtrace.part.0+0xe0/0xf0
[   32.587937]  show_stack+0x18/0x30
[   32.591245]  dump_stack_lvl+0x68/0x84
[   32.594900]  dump_stack+0x18/0x34
[   32.598206]  __might_resched+0x12c/0x160
[   32.602122]  __might_sleep+0x48/0xa0
[   32.605689]  __kmem_cache_alloc_node+0x2b8/0x2e0
[   32.610301]  __kmalloc+0x58/0x190
[   32.613610]  otx2_sq_aura_pool_init+0x1a8/0x314
[   32.618134]  otx2_open+0x1d4/0x9d0

To avoid use of GFP_ATOMIC for memory allocation, disable preemption
after all memory allocation is done.

The Linux kernel CVE team has assigned CVE-2023-53030 to this issue.


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

	Issue introduced in 5.15.87 with commit 6ea5273c71dd2d07c0a2459594eb34bc087939f7 and fixed in 5.15.91 with commit 2827c4eb429db64befdca11362e2b1c5f524f6ba
	Issue introduced in 6.1.5 with commit 667ce030bdfb62a86266444b2c3fd6ab98b9df9b and fixed in 6.1.8 with commit 1eb57b87f106c90cee6b2a56a10f2e29c7a25f3e
	Issue introduced in 6.0.19 with commit b754dc7c933dd9464223f64b10d33d68ab086cc6

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-2023-53030
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/marvell/octeontx2/nic/otx2_common.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/2827c4eb429db64befdca11362e2b1c5f524f6ba
	https://git.kernel.org/stable/c/1eb57b87f106c90cee6b2a56a10f2e29c7a25f3e
	https://git.kernel.org/stable/c/87b93b678e95c7d93fe6a55b0e0fbda26d8c7760