linux-cve-announce - CVE-2022-50171: crypto: hisilicon/sec

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Message-ID: <2025061829-CVE-2022-50171-733e@gregkh>
Date: Wed, 18 Jun 2025 13:03:56 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-cve-announce@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...nel.org>
Subject: CVE-2022-50171: crypto: hisilicon/sec - don't sleep when in softirq

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

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

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

crypto: hisilicon/sec - don't sleep when in softirq

When kunpeng920 encryption driver is used to deencrypt and decrypt
packets during the softirq, it is not allowed to use mutex lock. The
kernel will report the following error:

BUG: scheduling while atomic: swapper/57/0/0x00000300
Call trace:
dump_backtrace+0x0/0x1e4
show_stack+0x20/0x2c
dump_stack+0xd8/0x140
__schedule_bug+0x68/0x80
__schedule+0x728/0x840
schedule+0x50/0xe0
schedule_preempt_disabled+0x18/0x24
__mutex_lock.constprop.0+0x594/0x5dc
__mutex_lock_slowpath+0x1c/0x30
mutex_lock+0x50/0x60
sec_request_init+0x8c/0x1a0 [hisi_sec2]
sec_process+0x28/0x1ac [hisi_sec2]
sec_skcipher_crypto+0xf4/0x1d4 [hisi_sec2]
sec_skcipher_encrypt+0x1c/0x30 [hisi_sec2]
crypto_skcipher_encrypt+0x2c/0x40
crypto_authenc_encrypt+0xc8/0xfc [authenc]
crypto_aead_encrypt+0x2c/0x40
echainiv_encrypt+0x144/0x1a0 [echainiv]
crypto_aead_encrypt+0x2c/0x40
esp_output_tail+0x348/0x5c0 [esp4]
esp_output+0x120/0x19c [esp4]
xfrm_output_one+0x25c/0x4d4
xfrm_output_resume+0x6c/0x1fc
xfrm_output+0xac/0x3c0
xfrm4_output+0x64/0x130
ip_build_and_send_pkt+0x158/0x20c
tcp_v4_send_synack+0xdc/0x1f0
tcp_conn_request+0x7d0/0x994
tcp_v4_conn_request+0x58/0x6c
tcp_v6_conn_request+0xf0/0x100
tcp_rcv_state_process+0x1cc/0xd60
tcp_v4_do_rcv+0x10c/0x250
tcp_v4_rcv+0xfc4/0x10a4
ip_protocol_deliver_rcu+0xf4/0x200
ip_local_deliver_finish+0x58/0x70
ip_local_deliver+0x68/0x120
ip_sublist_rcv_finish+0x70/0x94
ip_list_rcv_finish.constprop.0+0x17c/0x1d0
ip_sublist_rcv+0x40/0xb0
ip_list_rcv+0x140/0x1dc
__netif_receive_skb_list_core+0x154/0x28c
__netif_receive_skb_list+0x120/0x1a0
netif_receive_skb_list_internal+0xe4/0x1f0
napi_complete_done+0x70/0x1f0
gro_cell_poll+0x9c/0xb0
napi_poll+0xcc/0x264
net_rx_action+0xd4/0x21c
__do_softirq+0x130/0x358
irq_exit+0x11c/0x13c
__handle_domain_irq+0x88/0xf0
gic_handle_irq+0x78/0x2c0
el1_irq+0xb8/0x140
arch_cpu_idle+0x18/0x40
default_idle_call+0x5c/0x1c0
cpuidle_idle_call+0x174/0x1b0
do_idle+0xc8/0x160
cpu_startup_entry+0x30/0x11c
secondary_start_kernel+0x158/0x1e4
softirq: huh, entered softirq 3 NET_RX 0000000093774ee4 with
preempt_count 00000100, exited with fffffe00?

The Linux kernel CVE team has assigned CVE-2022-50171 to this issue.


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

	Issue introduced in 5.5 with commit 416d82204df44ef727de6eafafeaa4d12fdc78dc and fixed in 5.10.137 with commit 16e18a8ac7c9748cf35a8d2f0ba2c6e8850e7568
	Issue introduced in 5.5 with commit 416d82204df44ef727de6eafafeaa4d12fdc78dc and fixed in 5.15.61 with commit aa495dfe71229b9034b59d8072ff0b2325ddd5ee
	Issue introduced in 5.5 with commit 416d82204df44ef727de6eafafeaa4d12fdc78dc and fixed in 5.18.18 with commit 4a461ba5b9753352f438824fdd915cba675b1733
	Issue introduced in 5.5 with commit 416d82204df44ef727de6eafafeaa4d12fdc78dc and fixed in 5.19.2 with commit c9be45e4c69fde36522274f04d1aa0d097ae3958
	Issue introduced in 5.5 with commit 416d82204df44ef727de6eafafeaa4d12fdc78dc and fixed in 6.0 with commit 02884a4f12de11f54d4ca67a07dd1f111d96fdbd

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-2022-50171
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/crypto/hisilicon/sec2/sec.h
	drivers/crypto/hisilicon/sec2/sec_crypto.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/16e18a8ac7c9748cf35a8d2f0ba2c6e8850e7568
	https://git.kernel.org/stable/c/aa495dfe71229b9034b59d8072ff0b2325ddd5ee
	https://git.kernel.org/stable/c/4a461ba5b9753352f438824fdd915cba675b1733
	https://git.kernel.org/stable/c/c9be45e4c69fde36522274f04d1aa0d097ae3958
	https://git.kernel.org/stable/c/02884a4f12de11f54d4ca67a07dd1f111d96fdbd