linux-cve-announce - CVE-2022-50066: net: atlantic: fix aq

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Message-ID: <2025061851-CVE-2022-50066-a2ad@gregkh>
Date: Wed, 18 Jun 2025 13:02:11 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50066: net: atlantic: fix aq_vec index out of range error

From: Greg Kroah-Hartman <gregkh@...nel.org>

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

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

net: atlantic: fix aq_vec index out of range error

The final update statement of the for loop exceeds the array range, the
dereference of self->aq_vec[i] is not checked and then leads to the
index out of range error.
Also fixed this kind of coding style in other for loop.

[   97.937604] UBSAN: array-index-out-of-bounds in drivers/net/ethernet/aquantia/atlantic/aq_nic.c:1404:48
[   97.937607] index 8 is out of range for type 'aq_vec_s *[8]'
[   97.937608] CPU: 38 PID: 3767 Comm: kworker/u256:18 Not tainted 5.19.0+ #2
[   97.937610] Hardware name: Dell Inc. Precision 7865 Tower/, BIOS 1.0.0 06/12/2022
[   97.937611] Workqueue: events_unbound async_run_entry_fn
[   97.937616] Call Trace:
[   97.937617]  <TASK>
[   97.937619]  dump_stack_lvl+0x49/0x63
[   97.937624]  dump_stack+0x10/0x16
[   97.937626]  ubsan_epilogue+0x9/0x3f
[   97.937627]  __ubsan_handle_out_of_bounds.cold+0x44/0x49
[   97.937629]  ? __scm_send+0x348/0x440
[   97.937632]  ? aq_vec_stop+0x72/0x80 [atlantic]
[   97.937639]  aq_nic_stop+0x1b6/0x1c0 [atlantic]
[   97.937644]  aq_suspend_common+0x88/0x90 [atlantic]
[   97.937648]  aq_pm_suspend_poweroff+0xe/0x20 [atlantic]
[   97.937653]  pci_pm_suspend+0x7e/0x1a0
[   97.937655]  ? pci_pm_suspend_noirq+0x2b0/0x2b0
[   97.937657]  dpm_run_callback+0x54/0x190
[   97.937660]  __device_suspend+0x14c/0x4d0
[   97.937661]  async_suspend+0x23/0x70
[   97.937663]  async_run_entry_fn+0x33/0x120
[   97.937664]  process_one_work+0x21f/0x3f0
[   97.937666]  worker_thread+0x4a/0x3c0
[   97.937668]  ? process_one_work+0x3f0/0x3f0
[   97.937669]  kthread+0xf0/0x120
[   97.937671]  ? kthread_complete_and_exit+0x20/0x20
[   97.937672]  ret_from_fork+0x22/0x30
[   97.937676]  </TASK>

v2. fixed "warning: variable 'aq_vec' set but not used"

v3. simplified a for loop

The Linux kernel CVE team has assigned CVE-2022-50066 to this issue.


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

	Issue introduced in 4.11 with commit 97bde5c4f909a55ab4c36cf0ac9094f6c9e4cdf6 and fixed in 5.10.138 with commit df60c534d4c5a681172952dd4b475a5d818b3a86
	Issue introduced in 4.11 with commit 97bde5c4f909a55ab4c36cf0ac9094f6c9e4cdf6 and fixed in 5.15.63 with commit 422a02a771599cac96f2b2900d993e0bb7ba5b88
	Issue introduced in 4.11 with commit 97bde5c4f909a55ab4c36cf0ac9094f6c9e4cdf6 and fixed in 5.19.4 with commit 23bf155476539354ab5c8cc9bb460fd1209b39b5
	Issue introduced in 4.11 with commit 97bde5c4f909a55ab4c36cf0ac9094f6c9e4cdf6 and fixed in 6.0 with commit 2ba5e47fb75fbb8fab45f5c1bc8d5c33d8834bd3

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-2022-50066
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/aquantia/atlantic/aq_nic.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/df60c534d4c5a681172952dd4b475a5d818b3a86
	https://git.kernel.org/stable/c/422a02a771599cac96f2b2900d993e0bb7ba5b88
	https://git.kernel.org/stable/c/23bf155476539354ab5c8cc9bb460fd1209b39b5
	https://git.kernel.org/stable/c/2ba5e47fb75fbb8fab45f5c1bc8d5c33d8834bd3